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  • Committer: Teddy Hogeborn
  • Date: 2018-02-10 13:23:58 UTC
  • mto: (237.7.594 trunk)
  • mto: This revision was merged to the branch mainline in revision 362.
  • Revision ID: teddy@recompile.se-20180210132358-8pfvo9vshq9l32y5
Remove unnecessary text left from old example init.d file

* init.d-mandos: Remove unnecessary text left from old example init.d
  file.

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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 © 2008,2009 Teddy Hogeborn
15
 
# Copyright © 2008,2009 Björn Påhlsson
16
 
17
 
# This program is free software: you can redistribute it and/or modify
18
 
# it under the terms of the GNU General Public License as published by
 
14
# Copyright © 2008-2018 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
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
 
#     This program is distributed in the hope that it will be useful,
23
 
#     but WITHOUT ANY WARRANTY; without even the implied warranty of
 
24
#     Mandos is distributed in the hope that it will be useful, but
 
25
#     WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
25
27
#     GNU General Public License for more details.
26
 
 
28
#
27
29
# You should have received a copy of the GNU General Public License
28
 
# along with this program.  If not, see
29
 
# <http://www.gnu.org/licenses/>.
30
 
31
 
# Contact the authors at <mandos@fukt.bsnet.se>.
32
 
33
 
 
34
 
from __future__ import division, with_statement, absolute_import
35
 
 
36
 
import SocketServer as socketserver
 
30
# along with Mandos.  If not, see <http://www.gnu.org/licenses/>.
 
31
#
 
32
# Contact the authors at <mandos@recompile.se>.
 
33
#
 
34
 
 
35
from __future__ import (division, absolute_import, print_function,
 
36
                        unicode_literals)
 
37
 
 
38
try:
 
39
    from future_builtins import *
 
40
except ImportError:
 
41
    pass
 
42
 
 
43
try:
 
44
    import SocketServer as socketserver
 
45
except ImportError:
 
46
    import socketserver
37
47
import socket
38
 
import optparse
 
48
import argparse
39
49
import datetime
40
50
import errno
41
 
import gnutls.crypto
42
 
import gnutls.connection
43
 
import gnutls.errors
44
 
import gnutls.library.functions
45
 
import gnutls.library.constants
46
 
import gnutls.library.types
47
 
import ConfigParser as configparser
 
51
try:
 
52
    import ConfigParser as configparser
 
53
except ImportError:
 
54
    import configparser
48
55
import sys
49
56
import re
50
57
import os
59
66
import struct
60
67
import fcntl
61
68
import functools
62
 
import cPickle as pickle
63
 
import select
 
69
try:
 
70
    import cPickle as pickle
 
71
except ImportError:
 
72
    import pickle
 
73
import multiprocessing
 
74
import types
 
75
import binascii
 
76
import tempfile
 
77
import itertools
 
78
import collections
 
79
import codecs
64
80
 
65
81
import dbus
66
82
import dbus.service
67
 
import gobject
68
 
import avahi
 
83
from gi.repository import GLib
69
84
from dbus.mainloop.glib import DBusGMainLoop
70
85
import ctypes
71
86
import ctypes.util
72
87
import xml.dom.minidom
73
88
import inspect
74
89
 
 
90
# Try to find the value of SO_BINDTODEVICE:
75
91
try:
 
92
    # This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
 
93
    # newer, and it is also the most natural place for it:
76
94
    SO_BINDTODEVICE = socket.SO_BINDTODEVICE
77
95
except AttributeError:
78
96
    try:
 
97
        # This is where SO_BINDTODEVICE was up to and including Python
 
98
        # 2.6, and also 3.2:
79
99
        from IN import SO_BINDTODEVICE
80
100
    except ImportError:
81
 
        SO_BINDTODEVICE = None
82
 
 
83
 
 
84
 
version = "1.0.14"
85
 
 
86
 
logger = logging.Logger(u'mandos')
87
 
syslogger = (logging.handlers.SysLogHandler
88
 
             (facility = logging.handlers.SysLogHandler.LOG_DAEMON,
89
 
              address = "/dev/log"))
90
 
syslogger.setFormatter(logging.Formatter
91
 
                       (u'Mandos [%(process)d]: %(levelname)s:'
92
 
                        u' %(message)s'))
93
 
logger.addHandler(syslogger)
94
 
 
95
 
console = logging.StreamHandler()
96
 
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
97
 
                                       u' %(levelname)s:'
98
 
                                       u' %(message)s'))
99
 
logger.addHandler(console)
 
101
        # In Python 2.7 it seems to have been removed entirely.
 
102
        # Try running the C preprocessor:
 
103
        try:
 
104
            cc = subprocess.Popen(["cc", "--language=c", "-E",
 
105
                                   "/dev/stdin"],
 
106
                                  stdin=subprocess.PIPE,
 
107
                                  stdout=subprocess.PIPE)
 
108
            stdout = cc.communicate(
 
109
                "#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
 
110
            SO_BINDTODEVICE = int(stdout.splitlines()[-1])
 
111
        except (OSError, ValueError, IndexError):
 
112
            # No value found
 
113
            SO_BINDTODEVICE = None
 
114
 
 
115
if sys.version_info.major == 2:
 
116
    str = unicode
 
117
 
 
118
version = "1.7.16"
 
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
 
100
303
 
101
304
class AvahiError(Exception):
102
305
    def __init__(self, value, *args, **kwargs):
103
306
        self.value = value
104
 
        super(AvahiError, self).__init__(value, *args, **kwargs)
105
 
    def __unicode__(self):
106
 
        return unicode(repr(self.value))
 
307
        return super(AvahiError, self).__init__(value, *args,
 
308
                                                **kwargs)
 
309
 
107
310
 
108
311
class AvahiServiceError(AvahiError):
109
312
    pass
110
313
 
 
314
 
111
315
class AvahiGroupError(AvahiError):
112
316
    pass
113
317
 
114
318
 
115
319
class AvahiService(object):
116
320
    """An Avahi (Zeroconf) service.
117
 
    
 
321
 
118
322
    Attributes:
119
323
    interface: integer; avahi.IF_UNSPEC or an interface index.
120
324
               Used to optionally bind to the specified interface.
121
 
    name: string; Example: u'Mandos'
122
 
    type: string; Example: u'_mandos._tcp'.
123
 
                  See <http://www.dns-sd.org/ServiceTypes.html>
 
325
    name: string; Example: 'Mandos'
 
326
    type: string; Example: '_mandos._tcp'.
 
327
     See <https://www.iana.org/assignments/service-names-port-numbers>
124
328
    port: integer; what port to announce
125
329
    TXT: list of strings; TXT record for the service
126
330
    domain: string; Domain to publish on, default to .local if empty.
132
336
    server: D-Bus Server
133
337
    bus: dbus.SystemBus()
134
338
    """
135
 
    def __init__(self, interface = avahi.IF_UNSPEC, name = None,
136
 
                 servicetype = None, port = None, TXT = None,
137
 
                 domain = u"", host = u"", max_renames = 32768,
138
 
                 protocol = avahi.PROTO_UNSPEC, bus = None):
 
339
 
 
340
    def __init__(self,
 
341
                 interface=avahi.IF_UNSPEC,
 
342
                 name=None,
 
343
                 servicetype=None,
 
344
                 port=None,
 
345
                 TXT=None,
 
346
                 domain="",
 
347
                 host="",
 
348
                 max_renames=32768,
 
349
                 protocol=avahi.PROTO_UNSPEC,
 
350
                 bus=None):
139
351
        self.interface = interface
140
352
        self.name = name
141
353
        self.type = servicetype
149
361
        self.group = None       # our entry group
150
362
        self.server = None
151
363
        self.bus = bus
152
 
    def rename(self):
 
364
        self.entry_group_state_changed_match = None
 
365
 
 
366
    def rename(self, remove=True):
153
367
        """Derived from the Avahi example code"""
154
368
        if self.rename_count >= self.max_renames:
155
 
            logger.critical(u"No suitable Zeroconf service name found"
156
 
                            u" after %i retries, exiting.",
 
369
            logger.critical("No suitable Zeroconf service name found"
 
370
                            " after %i retries, exiting.",
157
371
                            self.rename_count)
158
 
            raise AvahiServiceError(u"Too many renames")
159
 
        self.name = self.server.GetAlternativeServiceName(self.name)
160
 
        logger.info(u"Changing Zeroconf service name to %r ...",
161
 
                    unicode(self.name))
162
 
        syslogger.setFormatter(logging.Formatter
163
 
                               (u'Mandos (%s) [%%(process)d]:'
164
 
                                u' %%(levelname)s: %%(message)s'
165
 
                                % self.name))
166
 
        self.remove()
167
 
        self.add()
 
372
            raise AvahiServiceError("Too many renames")
 
373
        self.name = str(
 
374
            self.server.GetAlternativeServiceName(self.name))
168
375
        self.rename_count += 1
 
376
        logger.info("Changing Zeroconf service name to %r ...",
 
377
                    self.name)
 
378
        if remove:
 
379
            self.remove()
 
380
        try:
 
381
            self.add()
 
382
        except dbus.exceptions.DBusException as error:
 
383
            if (error.get_dbus_name()
 
384
                == "org.freedesktop.Avahi.CollisionError"):
 
385
                logger.info("Local Zeroconf service name collision.")
 
386
                return self.rename(remove=False)
 
387
            else:
 
388
                logger.critical("D-Bus Exception", exc_info=error)
 
389
                self.cleanup()
 
390
                os._exit(1)
 
391
 
169
392
    def remove(self):
170
393
        """Derived from the Avahi example code"""
 
394
        if self.entry_group_state_changed_match is not None:
 
395
            self.entry_group_state_changed_match.remove()
 
396
            self.entry_group_state_changed_match = None
171
397
        if self.group is not None:
172
398
            self.group.Reset()
 
399
 
173
400
    def add(self):
174
401
        """Derived from the Avahi example code"""
 
402
        self.remove()
175
403
        if self.group is None:
176
404
            self.group = dbus.Interface(
177
405
                self.bus.get_object(avahi.DBUS_NAME,
178
406
                                    self.server.EntryGroupNew()),
179
407
                avahi.DBUS_INTERFACE_ENTRY_GROUP)
180
 
            self.group.connect_to_signal('StateChanged',
181
 
                                         self
182
 
                                         .entry_group_state_changed)
183
 
        logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
 
408
        self.entry_group_state_changed_match = (
 
409
            self.group.connect_to_signal(
 
410
                'StateChanged', self.entry_group_state_changed))
 
411
        logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
184
412
                     self.name, self.type)
185
413
        self.group.AddService(
186
414
            self.interface,
191
419
            dbus.UInt16(self.port),
192
420
            avahi.string_array_to_txt_array(self.TXT))
193
421
        self.group.Commit()
 
422
 
194
423
    def entry_group_state_changed(self, state, error):
195
424
        """Derived from the Avahi example code"""
196
 
        logger.debug(u"Avahi entry group state change: %i", state)
197
 
        
 
425
        logger.debug("Avahi entry group state change: %i", state)
 
426
 
198
427
        if state == avahi.ENTRY_GROUP_ESTABLISHED:
199
 
            logger.debug(u"Zeroconf service established.")
 
428
            logger.debug("Zeroconf service established.")
200
429
        elif state == avahi.ENTRY_GROUP_COLLISION:
201
 
            logger.warning(u"Zeroconf service name collision.")
 
430
            logger.info("Zeroconf service name collision.")
202
431
            self.rename()
203
432
        elif state == avahi.ENTRY_GROUP_FAILURE:
204
 
            logger.critical(u"Avahi: Error in group state changed %s",
205
 
                            unicode(error))
206
 
            raise AvahiGroupError(u"State changed: %s"
207
 
                                  % unicode(error))
 
433
            logger.critical("Avahi: Error in group state changed %s",
 
434
                            str(error))
 
435
            raise AvahiGroupError("State changed: {!s}".format(error))
 
436
 
208
437
    def cleanup(self):
209
438
        """Derived from the Avahi example code"""
210
439
        if self.group is not None:
211
 
            self.group.Free()
 
440
            try:
 
441
                self.group.Free()
 
442
            except (dbus.exceptions.UnknownMethodException,
 
443
                    dbus.exceptions.DBusException):
 
444
                pass
212
445
            self.group = None
213
 
    def server_state_changed(self, state):
 
446
        self.remove()
 
447
 
 
448
    def server_state_changed(self, state, error=None):
214
449
        """Derived from the Avahi example code"""
215
 
        logger.debug(u"Avahi server state change: %i", state)
216
 
        if state == avahi.SERVER_COLLISION:
217
 
            logger.error(u"Zeroconf server name collision")
218
 
            self.remove()
 
450
        logger.debug("Avahi server state change: %i", state)
 
451
        bad_states = {
 
452
            avahi.SERVER_INVALID: "Zeroconf server invalid",
 
453
            avahi.SERVER_REGISTERING: None,
 
454
            avahi.SERVER_COLLISION: "Zeroconf server name collision",
 
455
            avahi.SERVER_FAILURE: "Zeroconf server failure",
 
456
        }
 
457
        if state in bad_states:
 
458
            if bad_states[state] is not None:
 
459
                if error is None:
 
460
                    logger.error(bad_states[state])
 
461
                else:
 
462
                    logger.error(bad_states[state] + ": %r", error)
 
463
            self.cleanup()
219
464
        elif state == avahi.SERVER_RUNNING:
220
 
            self.add()
 
465
            try:
 
466
                self.add()
 
467
            except dbus.exceptions.DBusException as error:
 
468
                if (error.get_dbus_name()
 
469
                    == "org.freedesktop.Avahi.CollisionError"):
 
470
                    logger.info("Local Zeroconf service name"
 
471
                                " collision.")
 
472
                    return self.rename(remove=False)
 
473
                else:
 
474
                    logger.critical("D-Bus Exception", exc_info=error)
 
475
                    self.cleanup()
 
476
                    os._exit(1)
 
477
        else:
 
478
            if error is None:
 
479
                logger.debug("Unknown state: %r", state)
 
480
            else:
 
481
                logger.debug("Unknown state: %r: %r", state, error)
 
482
 
221
483
    def activate(self):
222
484
        """Derived from the Avahi example code"""
223
485
        if self.server is None:
224
486
            self.server = dbus.Interface(
225
487
                self.bus.get_object(avahi.DBUS_NAME,
226
 
                                    avahi.DBUS_PATH_SERVER),
 
488
                                    avahi.DBUS_PATH_SERVER,
 
489
                                    follow_name_owner_changes=True),
227
490
                avahi.DBUS_INTERFACE_SERVER)
228
 
        self.server.connect_to_signal(u"StateChanged",
229
 
                                 self.server_state_changed)
 
491
        self.server.connect_to_signal("StateChanged",
 
492
                                      self.server_state_changed)
230
493
        self.server_state_changed(self.server.GetState())
231
494
 
232
495
 
 
496
class AvahiServiceToSyslog(AvahiService):
 
497
    def rename(self, *args, **kwargs):
 
498
        """Add the new name to the syslog messages"""
 
499
        ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
 
500
        syslogger.setFormatter(logging.Formatter(
 
501
            'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
 
502
            .format(self.name)))
 
503
        return ret
 
504
 
 
505
 
 
506
# Pretend that we have a GnuTLS module
 
507
class GnuTLS(object):
 
508
    """This isn't so much a class as it is a module-like namespace.
 
509
    It is instantiated once, and simulates having a GnuTLS module."""
 
510
 
 
511
    library = ctypes.util.find_library("gnutls")
 
512
    if library is None:
 
513
        library = ctypes.util.find_library("gnutls-deb0")
 
514
    _library = ctypes.cdll.LoadLibrary(library)
 
515
    del library
 
516
    _need_version = b"3.3.0"
 
517
 
 
518
    def __init__(self):
 
519
        # Need to use "self" here, since this method is called before
 
520
        # the assignment to the "gnutls" global variable happens.
 
521
        if self.check_version(self._need_version) is None:
 
522
            raise self.Error("Needs GnuTLS {} or later"
 
523
                             .format(self._need_version))
 
524
 
 
525
    # Unless otherwise indicated, the constants and types below are
 
526
    # all from the gnutls/gnutls.h C header file.
 
527
 
 
528
    # Constants
 
529
    E_SUCCESS = 0
 
530
    E_INTERRUPTED = -52
 
531
    E_AGAIN = -28
 
532
    CRT_OPENPGP = 2
 
533
    CLIENT = 2
 
534
    SHUT_RDWR = 0
 
535
    CRD_CERTIFICATE = 1
 
536
    E_NO_CERTIFICATE_FOUND = -49
 
537
    OPENPGP_FMT_RAW = 0         # gnutls/openpgp.h
 
538
 
 
539
    # Types
 
540
    class session_int(ctypes.Structure):
 
541
        _fields_ = []
 
542
    session_t = ctypes.POINTER(session_int)
 
543
 
 
544
    class certificate_credentials_st(ctypes.Structure):
 
545
        _fields_ = []
 
546
    certificate_credentials_t = ctypes.POINTER(
 
547
        certificate_credentials_st)
 
548
    certificate_type_t = ctypes.c_int
 
549
 
 
550
    class datum_t(ctypes.Structure):
 
551
        _fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
 
552
                    ('size', ctypes.c_uint)]
 
553
 
 
554
    class openpgp_crt_int(ctypes.Structure):
 
555
        _fields_ = []
 
556
    openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
 
557
    openpgp_crt_fmt_t = ctypes.c_int  # gnutls/openpgp.h
 
558
    log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
 
559
    credentials_type_t = ctypes.c_int
 
560
    transport_ptr_t = ctypes.c_void_p
 
561
    close_request_t = ctypes.c_int
 
562
 
 
563
    # Exceptions
 
564
    class Error(Exception):
 
565
        # We need to use the class name "GnuTLS" here, since this
 
566
        # exception might be raised from within GnuTLS.__init__,
 
567
        # which is called before the assignment to the "gnutls"
 
568
        # global variable has happened.
 
569
        def __init__(self, message=None, code=None, args=()):
 
570
            # Default usage is by a message string, but if a return
 
571
            # code is passed, convert it to a string with
 
572
            # gnutls.strerror()
 
573
            self.code = code
 
574
            if message is None and code is not None:
 
575
                message = GnuTLS.strerror(code)
 
576
            return super(GnuTLS.Error, self).__init__(
 
577
                message, *args)
 
578
 
 
579
    class CertificateSecurityError(Error):
 
580
        pass
 
581
 
 
582
    # Classes
 
583
    class Credentials(object):
 
584
        def __init__(self):
 
585
            self._c_object = gnutls.certificate_credentials_t()
 
586
            gnutls.certificate_allocate_credentials(
 
587
                ctypes.byref(self._c_object))
 
588
            self.type = gnutls.CRD_CERTIFICATE
 
589
 
 
590
        def __del__(self):
 
591
            gnutls.certificate_free_credentials(self._c_object)
 
592
 
 
593
    class ClientSession(object):
 
594
        def __init__(self, socket, credentials=None):
 
595
            self._c_object = gnutls.session_t()
 
596
            gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
 
597
            gnutls.set_default_priority(self._c_object)
 
598
            gnutls.transport_set_ptr(self._c_object, socket.fileno())
 
599
            gnutls.handshake_set_private_extensions(self._c_object,
 
600
                                                    True)
 
601
            self.socket = socket
 
602
            if credentials is None:
 
603
                credentials = gnutls.Credentials()
 
604
            gnutls.credentials_set(self._c_object, credentials.type,
 
605
                                   ctypes.cast(credentials._c_object,
 
606
                                               ctypes.c_void_p))
 
607
            self.credentials = credentials
 
608
 
 
609
        def __del__(self):
 
610
            gnutls.deinit(self._c_object)
 
611
 
 
612
        def handshake(self):
 
613
            return gnutls.handshake(self._c_object)
 
614
 
 
615
        def send(self, data):
 
616
            data = bytes(data)
 
617
            data_len = len(data)
 
618
            while data_len > 0:
 
619
                data_len -= gnutls.record_send(self._c_object,
 
620
                                               data[-data_len:],
 
621
                                               data_len)
 
622
 
 
623
        def bye(self):
 
624
            return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
 
625
 
 
626
    # Error handling functions
 
627
    def _error_code(result):
 
628
        """A function to raise exceptions on errors, suitable
 
629
        for the 'restype' attribute on ctypes functions"""
 
630
        if result >= 0:
 
631
            return result
 
632
        if result == gnutls.E_NO_CERTIFICATE_FOUND:
 
633
            raise gnutls.CertificateSecurityError(code=result)
 
634
        raise gnutls.Error(code=result)
 
635
 
 
636
    def _retry_on_error(result, func, arguments):
 
637
        """A function to retry on some errors, suitable
 
638
        for the 'errcheck' attribute on ctypes functions"""
 
639
        while result < 0:
 
640
            if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
 
641
                return _error_code(result)
 
642
            result = func(*arguments)
 
643
        return result
 
644
 
 
645
    # Unless otherwise indicated, the function declarations below are
 
646
    # all from the gnutls/gnutls.h C header file.
 
647
 
 
648
    # Functions
 
649
    priority_set_direct = _library.gnutls_priority_set_direct
 
650
    priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
 
651
                                    ctypes.POINTER(ctypes.c_char_p)]
 
652
    priority_set_direct.restype = _error_code
 
653
 
 
654
    init = _library.gnutls_init
 
655
    init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
 
656
    init.restype = _error_code
 
657
 
 
658
    set_default_priority = _library.gnutls_set_default_priority
 
659
    set_default_priority.argtypes = [session_t]
 
660
    set_default_priority.restype = _error_code
 
661
 
 
662
    record_send = _library.gnutls_record_send
 
663
    record_send.argtypes = [session_t, ctypes.c_void_p,
 
664
                            ctypes.c_size_t]
 
665
    record_send.restype = ctypes.c_ssize_t
 
666
    record_send.errcheck = _retry_on_error
 
667
 
 
668
    certificate_allocate_credentials = (
 
669
        _library.gnutls_certificate_allocate_credentials)
 
670
    certificate_allocate_credentials.argtypes = [
 
671
        ctypes.POINTER(certificate_credentials_t)]
 
672
    certificate_allocate_credentials.restype = _error_code
 
673
 
 
674
    certificate_free_credentials = (
 
675
        _library.gnutls_certificate_free_credentials)
 
676
    certificate_free_credentials.argtypes = [
 
677
        certificate_credentials_t]
 
678
    certificate_free_credentials.restype = None
 
679
 
 
680
    handshake_set_private_extensions = (
 
681
        _library.gnutls_handshake_set_private_extensions)
 
682
    handshake_set_private_extensions.argtypes = [session_t,
 
683
                                                 ctypes.c_int]
 
684
    handshake_set_private_extensions.restype = None
 
685
 
 
686
    credentials_set = _library.gnutls_credentials_set
 
687
    credentials_set.argtypes = [session_t, credentials_type_t,
 
688
                                ctypes.c_void_p]
 
689
    credentials_set.restype = _error_code
 
690
 
 
691
    strerror = _library.gnutls_strerror
 
692
    strerror.argtypes = [ctypes.c_int]
 
693
    strerror.restype = ctypes.c_char_p
 
694
 
 
695
    certificate_type_get = _library.gnutls_certificate_type_get
 
696
    certificate_type_get.argtypes = [session_t]
 
697
    certificate_type_get.restype = _error_code
 
698
 
 
699
    certificate_get_peers = _library.gnutls_certificate_get_peers
 
700
    certificate_get_peers.argtypes = [session_t,
 
701
                                      ctypes.POINTER(ctypes.c_uint)]
 
702
    certificate_get_peers.restype = ctypes.POINTER(datum_t)
 
703
 
 
704
    global_set_log_level = _library.gnutls_global_set_log_level
 
705
    global_set_log_level.argtypes = [ctypes.c_int]
 
706
    global_set_log_level.restype = None
 
707
 
 
708
    global_set_log_function = _library.gnutls_global_set_log_function
 
709
    global_set_log_function.argtypes = [log_func]
 
710
    global_set_log_function.restype = None
 
711
 
 
712
    deinit = _library.gnutls_deinit
 
713
    deinit.argtypes = [session_t]
 
714
    deinit.restype = None
 
715
 
 
716
    handshake = _library.gnutls_handshake
 
717
    handshake.argtypes = [session_t]
 
718
    handshake.restype = _error_code
 
719
    handshake.errcheck = _retry_on_error
 
720
 
 
721
    transport_set_ptr = _library.gnutls_transport_set_ptr
 
722
    transport_set_ptr.argtypes = [session_t, transport_ptr_t]
 
723
    transport_set_ptr.restype = None
 
724
 
 
725
    bye = _library.gnutls_bye
 
726
    bye.argtypes = [session_t, close_request_t]
 
727
    bye.restype = _error_code
 
728
    bye.errcheck = _retry_on_error
 
729
 
 
730
    check_version = _library.gnutls_check_version
 
731
    check_version.argtypes = [ctypes.c_char_p]
 
732
    check_version.restype = ctypes.c_char_p
 
733
 
 
734
    # All the function declarations below are from gnutls/openpgp.h
 
735
 
 
736
    openpgp_crt_init = _library.gnutls_openpgp_crt_init
 
737
    openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
 
738
    openpgp_crt_init.restype = _error_code
 
739
 
 
740
    openpgp_crt_import = _library.gnutls_openpgp_crt_import
 
741
    openpgp_crt_import.argtypes = [openpgp_crt_t,
 
742
                                   ctypes.POINTER(datum_t),
 
743
                                   openpgp_crt_fmt_t]
 
744
    openpgp_crt_import.restype = _error_code
 
745
 
 
746
    openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
 
747
    openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
 
748
                                        ctypes.POINTER(ctypes.c_uint)]
 
749
    openpgp_crt_verify_self.restype = _error_code
 
750
 
 
751
    openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
 
752
    openpgp_crt_deinit.argtypes = [openpgp_crt_t]
 
753
    openpgp_crt_deinit.restype = None
 
754
 
 
755
    openpgp_crt_get_fingerprint = (
 
756
        _library.gnutls_openpgp_crt_get_fingerprint)
 
757
    openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
 
758
                                            ctypes.c_void_p,
 
759
                                            ctypes.POINTER(
 
760
                                                ctypes.c_size_t)]
 
761
    openpgp_crt_get_fingerprint.restype = _error_code
 
762
 
 
763
    # Remove non-public functions
 
764
    del _error_code, _retry_on_error
 
765
# Create the global "gnutls" object, simulating a module
 
766
gnutls = GnuTLS()
 
767
 
 
768
 
 
769
def call_pipe(connection,       # : multiprocessing.Connection
 
770
              func, *args, **kwargs):
 
771
    """This function is meant to be called by multiprocessing.Process
 
772
 
 
773
    This function runs func(*args, **kwargs), and writes the resulting
 
774
    return value on the provided multiprocessing.Connection.
 
775
    """
 
776
    connection.send(func(*args, **kwargs))
 
777
    connection.close()
 
778
 
 
779
 
233
780
class Client(object):
234
781
    """A representation of a client host served by this server.
235
 
    
 
782
 
236
783
    Attributes:
237
 
    name:       string; from the config file, used in log messages and
238
 
                        D-Bus identifiers
 
784
    approved:   bool(); 'None' if not yet approved/disapproved
 
785
    approval_delay: datetime.timedelta(); Time to wait for approval
 
786
    approval_duration: datetime.timedelta(); Duration of one approval
 
787
    checker:    subprocess.Popen(); a running checker process used
 
788
                                    to see if the client lives.
 
789
                                    'None' if no process is running.
 
790
    checker_callback_tag: a GLib event source tag, or None
 
791
    checker_command: string; External command which is run to check
 
792
                     if client lives.  %() expansions are done at
 
793
                     runtime with vars(self) as dict, so that for
 
794
                     instance %(name)s can be used in the command.
 
795
    checker_initiator_tag: a GLib event source tag, or None
 
796
    created:    datetime.datetime(); (UTC) object creation
 
797
    client_structure: Object describing what attributes a client has
 
798
                      and is used for storing the client at exit
 
799
    current_checker_command: string; current running checker_command
 
800
    disable_initiator_tag: a GLib event source tag, or None
 
801
    enabled:    bool()
239
802
    fingerprint: string (40 or 32 hexadecimal digits); used to
240
803
                 uniquely identify the client
241
 
    secret:     bytestring; sent verbatim (over TLS) to client
242
804
    host:       string; available for use by the checker command
243
 
    created:    datetime.datetime(); (UTC) object creation
244
 
    last_enabled: datetime.datetime(); (UTC)
245
 
    enabled:    bool()
 
805
    interval:   datetime.timedelta(); How often to start a new checker
 
806
    last_approval_request: datetime.datetime(); (UTC) or None
246
807
    last_checked_ok: datetime.datetime(); (UTC) or None
 
808
    last_checker_status: integer between 0 and 255 reflecting exit
 
809
                         status of last checker. -1 reflects crashed
 
810
                         checker, -2 means no checker completed yet.
 
811
    last_checker_signal: The signal which killed the last checker, if
 
812
                         last_checker_status is -1
 
813
    last_enabled: datetime.datetime(); (UTC) or None
 
814
    name:       string; from the config file, used in log messages and
 
815
                        D-Bus identifiers
 
816
    secret:     bytestring; sent verbatim (over TLS) to client
247
817
    timeout:    datetime.timedelta(); How long from last_checked_ok
248
818
                                      until this client is disabled
249
 
    interval:   datetime.timedelta(); How often to start a new checker
250
 
    disable_hook:  If set, called by disable() as disable_hook(self)
251
 
    checker:    subprocess.Popen(); a running checker process used
252
 
                                    to see if the client lives.
253
 
                                    'None' if no process is running.
254
 
    checker_initiator_tag: a gobject event source tag, or None
255
 
    disable_initiator_tag: - '' -
256
 
    checker_callback_tag:  - '' -
257
 
    checker_command: string; External command which is run to check if
258
 
                     client lives.  %() expansions are done at
259
 
                     runtime with vars(self) as dict, so that for
260
 
                     instance %(name)s can be used in the command.
261
 
    current_checker_command: string; current running checker_command
 
819
    extended_timeout:   extra long timeout when secret has been sent
 
820
    runtime_expansions: Allowed attributes for runtime expansion.
 
821
    expires:    datetime.datetime(); time (UTC) when a client will be
 
822
                disabled, or None
 
823
    server_settings: The server_settings dict from main()
262
824
    """
263
 
    
 
825
 
 
826
    runtime_expansions = ("approval_delay", "approval_duration",
 
827
                          "created", "enabled", "expires",
 
828
                          "fingerprint", "host", "interval",
 
829
                          "last_approval_request", "last_checked_ok",
 
830
                          "last_enabled", "name", "timeout")
 
831
    client_defaults = {
 
832
        "timeout": "PT5M",
 
833
        "extended_timeout": "PT15M",
 
834
        "interval": "PT2M",
 
835
        "checker": "fping -q -- %%(host)s",
 
836
        "host": "",
 
837
        "approval_delay": "PT0S",
 
838
        "approval_duration": "PT1S",
 
839
        "approved_by_default": "True",
 
840
        "enabled": "True",
 
841
    }
 
842
 
264
843
    @staticmethod
265
 
    def _timedelta_to_milliseconds(td):
266
 
        "Convert a datetime.timedelta() to milliseconds"
267
 
        return ((td.days * 24 * 60 * 60 * 1000)
268
 
                + (td.seconds * 1000)
269
 
                + (td.microseconds // 1000))
270
 
    
271
 
    def timeout_milliseconds(self):
272
 
        "Return the 'timeout' attribute in milliseconds"
273
 
        return self._timedelta_to_milliseconds(self.timeout)
274
 
    
275
 
    def interval_milliseconds(self):
276
 
        "Return the 'interval' attribute in milliseconds"
277
 
        return self._timedelta_to_milliseconds(self.interval)
278
 
    
279
 
    def __init__(self, name = None, disable_hook=None, config=None):
280
 
        """Note: the 'checker' key in 'config' sets the
281
 
        'checker_command' attribute and *not* the 'checker'
282
 
        attribute."""
 
844
    def config_parser(config):
 
845
        """Construct a new dict of client settings of this form:
 
846
        { client_name: {setting_name: value, ...}, ...}
 
847
        with exceptions for any special settings as defined above.
 
848
        NOTE: Must be a pure function. Must return the same result
 
849
        value given the same arguments.
 
850
        """
 
851
        settings = {}
 
852
        for client_name in config.sections():
 
853
            section = dict(config.items(client_name))
 
854
            client = settings[client_name] = {}
 
855
 
 
856
            client["host"] = section["host"]
 
857
            # Reformat values from string types to Python types
 
858
            client["approved_by_default"] = config.getboolean(
 
859
                client_name, "approved_by_default")
 
860
            client["enabled"] = config.getboolean(client_name,
 
861
                                                  "enabled")
 
862
 
 
863
            # Uppercase and remove spaces from fingerprint for later
 
864
            # comparison purposes with return value from the
 
865
            # fingerprint() function
 
866
            client["fingerprint"] = (section["fingerprint"].upper()
 
867
                                     .replace(" ", ""))
 
868
            if "secret" in section:
 
869
                client["secret"] = codecs.decode(section["secret"]
 
870
                                                 .encode("utf-8"),
 
871
                                                 "base64")
 
872
            elif "secfile" in section:
 
873
                with open(os.path.expanduser(os.path.expandvars
 
874
                                             (section["secfile"])),
 
875
                          "rb") as secfile:
 
876
                    client["secret"] = secfile.read()
 
877
            else:
 
878
                raise TypeError("No secret or secfile for section {}"
 
879
                                .format(section))
 
880
            client["timeout"] = string_to_delta(section["timeout"])
 
881
            client["extended_timeout"] = string_to_delta(
 
882
                section["extended_timeout"])
 
883
            client["interval"] = string_to_delta(section["interval"])
 
884
            client["approval_delay"] = string_to_delta(
 
885
                section["approval_delay"])
 
886
            client["approval_duration"] = string_to_delta(
 
887
                section["approval_duration"])
 
888
            client["checker_command"] = section["checker"]
 
889
            client["last_approval_request"] = None
 
890
            client["last_checked_ok"] = None
 
891
            client["last_checker_status"] = -2
 
892
 
 
893
        return settings
 
894
 
 
895
    def __init__(self, settings, name=None, server_settings=None):
283
896
        self.name = name
284
 
        if config is None:
285
 
            config = {}
286
 
        logger.debug(u"Creating client %r", self.name)
287
 
        # Uppercase and remove spaces from fingerprint for later
288
 
        # comparison purposes with return value from the fingerprint()
289
 
        # function
290
 
        self.fingerprint = (config[u"fingerprint"].upper()
291
 
                            .replace(u" ", u""))
292
 
        logger.debug(u"  Fingerprint: %s", self.fingerprint)
293
 
        if u"secret" in config:
294
 
            self.secret = config[u"secret"].decode(u"base64")
295
 
        elif u"secfile" in config:
296
 
            with open(os.path.expanduser(os.path.expandvars
297
 
                                         (config[u"secfile"])),
298
 
                      "rb") as secfile:
299
 
                self.secret = secfile.read()
 
897
        if server_settings is None:
 
898
            server_settings = {}
 
899
        self.server_settings = server_settings
 
900
        # adding all client settings
 
901
        for setting, value in settings.items():
 
902
            setattr(self, setting, value)
 
903
 
 
904
        if self.enabled:
 
905
            if not hasattr(self, "last_enabled"):
 
906
                self.last_enabled = datetime.datetime.utcnow()
 
907
            if not hasattr(self, "expires"):
 
908
                self.expires = (datetime.datetime.utcnow()
 
909
                                + self.timeout)
300
910
        else:
301
 
            raise TypeError(u"No secret or secfile for client %s"
302
 
                            % self.name)
303
 
        self.host = config.get(u"host", u"")
304
 
        self.created = datetime.datetime.utcnow()
305
 
        self.enabled = False
306
 
        self.last_enabled = None
307
 
        self.last_checked_ok = None
308
 
        self.timeout = string_to_delta(config[u"timeout"])
309
 
        self.interval = string_to_delta(config[u"interval"])
310
 
        self.disable_hook = disable_hook
 
911
            self.last_enabled = None
 
912
            self.expires = None
 
913
 
 
914
        logger.debug("Creating client %r", self.name)
 
915
        logger.debug("  Fingerprint: %s", self.fingerprint)
 
916
        self.created = settings.get("created",
 
917
                                    datetime.datetime.utcnow())
 
918
 
 
919
        # attributes specific for this server instance
311
920
        self.checker = None
312
921
        self.checker_initiator_tag = None
313
922
        self.disable_initiator_tag = None
314
923
        self.checker_callback_tag = None
315
 
        self.checker_command = config[u"checker"]
316
924
        self.current_checker_command = None
317
 
        self.last_connect = None
318
 
    
 
925
        self.approved = None
 
926
        self.approvals_pending = 0
 
927
        self.changedstate = multiprocessing_manager.Condition(
 
928
            multiprocessing_manager.Lock())
 
929
        self.client_structure = [attr
 
930
                                 for attr in self.__dict__.keys()
 
931
                                 if not attr.startswith("_")]
 
932
        self.client_structure.append("client_structure")
 
933
 
 
934
        for name, t in inspect.getmembers(
 
935
                type(self), lambda obj: isinstance(obj, property)):
 
936
            if not name.startswith("_"):
 
937
                self.client_structure.append(name)
 
938
 
 
939
    # Send notice to process children that client state has changed
 
940
    def send_changedstate(self):
 
941
        with self.changedstate:
 
942
            self.changedstate.notify_all()
 
943
 
319
944
    def enable(self):
320
945
        """Start this client's checker and timeout hooks"""
321
 
        if getattr(self, u"enabled", False):
 
946
        if getattr(self, "enabled", False):
322
947
            # Already enabled
323
948
            return
 
949
        self.expires = datetime.datetime.utcnow() + self.timeout
 
950
        self.enabled = True
324
951
        self.last_enabled = datetime.datetime.utcnow()
 
952
        self.init_checker()
 
953
        self.send_changedstate()
 
954
 
 
955
    def disable(self, quiet=True):
 
956
        """Disable this client."""
 
957
        if not getattr(self, "enabled", False):
 
958
            return False
 
959
        if not quiet:
 
960
            logger.info("Disabling client %s", self.name)
 
961
        if getattr(self, "disable_initiator_tag", None) is not None:
 
962
            GLib.source_remove(self.disable_initiator_tag)
 
963
            self.disable_initiator_tag = None
 
964
        self.expires = None
 
965
        if getattr(self, "checker_initiator_tag", None) is not None:
 
966
            GLib.source_remove(self.checker_initiator_tag)
 
967
            self.checker_initiator_tag = None
 
968
        self.stop_checker()
 
969
        self.enabled = False
 
970
        if not quiet:
 
971
            self.send_changedstate()
 
972
        # Do not run this again if called by a GLib.timeout_add
 
973
        return False
 
974
 
 
975
    def __del__(self):
 
976
        self.disable()
 
977
 
 
978
    def init_checker(self):
325
979
        # Schedule a new checker to be started an 'interval' from now,
326
980
        # and every interval from then on.
327
 
        self.checker_initiator_tag = (gobject.timeout_add
328
 
                                      (self.interval_milliseconds(),
329
 
                                       self.start_checker))
 
981
        if self.checker_initiator_tag is not None:
 
982
            GLib.source_remove(self.checker_initiator_tag)
 
983
        self.checker_initiator_tag = GLib.timeout_add(
 
984
            int(self.interval.total_seconds() * 1000),
 
985
            self.start_checker)
330
986
        # Schedule a disable() when 'timeout' has passed
331
 
        self.disable_initiator_tag = (gobject.timeout_add
332
 
                                   (self.timeout_milliseconds(),
333
 
                                    self.disable))
334
 
        self.enabled = True
 
987
        if self.disable_initiator_tag is not None:
 
988
            GLib.source_remove(self.disable_initiator_tag)
 
989
        self.disable_initiator_tag = GLib.timeout_add(
 
990
            int(self.timeout.total_seconds() * 1000), self.disable)
335
991
        # Also start a new checker *right now*.
336
992
        self.start_checker()
337
 
    
338
 
    def disable(self, quiet=True):
339
 
        """Disable this client."""
340
 
        if not getattr(self, "enabled", False):
341
 
            return False
342
 
        if not quiet:
343
 
            logger.info(u"Disabling client %s", self.name)
344
 
        if getattr(self, u"disable_initiator_tag", False):
345
 
            gobject.source_remove(self.disable_initiator_tag)
346
 
            self.disable_initiator_tag = None
347
 
        if getattr(self, u"checker_initiator_tag", False):
348
 
            gobject.source_remove(self.checker_initiator_tag)
349
 
            self.checker_initiator_tag = None
350
 
        self.stop_checker()
351
 
        if self.disable_hook:
352
 
            self.disable_hook(self)
353
 
        self.enabled = False
354
 
        # Do not run this again if called by a gobject.timeout_add
355
 
        return False
356
 
    
357
 
    def __del__(self):
358
 
        self.disable_hook = None
359
 
        self.disable()
360
 
    
361
 
    def checker_callback(self, pid, condition, command):
 
993
 
 
994
    def checker_callback(self, source, condition, connection,
 
995
                         command):
362
996
        """The checker has completed, so take appropriate actions."""
363
997
        self.checker_callback_tag = None
364
998
        self.checker = None
365
 
        if os.WIFEXITED(condition):
366
 
            exitstatus = os.WEXITSTATUS(condition)
367
 
            if exitstatus == 0:
368
 
                logger.info(u"Checker for %(name)s succeeded",
 
999
        # Read return code from connection (see call_pipe)
 
1000
        returncode = connection.recv()
 
1001
        connection.close()
 
1002
 
 
1003
        if returncode >= 0:
 
1004
            self.last_checker_status = returncode
 
1005
            self.last_checker_signal = None
 
1006
            if self.last_checker_status == 0:
 
1007
                logger.info("Checker for %(name)s succeeded",
369
1008
                            vars(self))
370
1009
                self.checked_ok()
371
1010
            else:
372
 
                logger.info(u"Checker for %(name)s failed",
373
 
                            vars(self))
 
1011
                logger.info("Checker for %(name)s failed", vars(self))
374
1012
        else:
375
 
            logger.warning(u"Checker for %(name)s crashed?",
 
1013
            self.last_checker_status = -1
 
1014
            self.last_checker_signal = -returncode
 
1015
            logger.warning("Checker for %(name)s crashed?",
376
1016
                           vars(self))
377
 
    
 
1017
        return False
 
1018
 
378
1019
    def checked_ok(self):
379
 
        """Bump up the timeout for this client.
380
 
        
381
 
        This should only be called when the client has been seen,
382
 
        alive and well.
383
 
        """
 
1020
        """Assert that the client has been seen, alive and well."""
384
1021
        self.last_checked_ok = datetime.datetime.utcnow()
385
 
        gobject.source_remove(self.disable_initiator_tag)
386
 
        self.disable_initiator_tag = (gobject.timeout_add
387
 
                                      (self.timeout_milliseconds(),
388
 
                                       self.disable))
389
 
    
 
1022
        self.last_checker_status = 0
 
1023
        self.last_checker_signal = None
 
1024
        self.bump_timeout()
 
1025
 
 
1026
    def bump_timeout(self, timeout=None):
 
1027
        """Bump up the timeout for this client."""
 
1028
        if timeout is None:
 
1029
            timeout = self.timeout
 
1030
        if self.disable_initiator_tag is not None:
 
1031
            GLib.source_remove(self.disable_initiator_tag)
 
1032
            self.disable_initiator_tag = None
 
1033
        if getattr(self, "enabled", False):
 
1034
            self.disable_initiator_tag = GLib.timeout_add(
 
1035
                int(timeout.total_seconds() * 1000), self.disable)
 
1036
            self.expires = datetime.datetime.utcnow() + timeout
 
1037
 
 
1038
    def need_approval(self):
 
1039
        self.last_approval_request = datetime.datetime.utcnow()
 
1040
 
390
1041
    def start_checker(self):
391
1042
        """Start a new checker subprocess if one is not running.
392
 
        
 
1043
 
393
1044
        If a checker already exists, leave it running and do
394
1045
        nothing."""
395
1046
        # The reason for not killing a running checker is that if we
396
 
        # did that, then if a checker (for some reason) started
397
 
        # running slowly and taking more than 'interval' time, the
398
 
        # client would inevitably timeout, since no checker would get
399
 
        # a chance to run to completion.  If we instead leave running
 
1047
        # did that, and if a checker (for some reason) started running
 
1048
        # slowly and taking more than 'interval' time, then the client
 
1049
        # would inevitably timeout, since no checker would get a
 
1050
        # chance to run to completion.  If we instead leave running
400
1051
        # checkers alone, the checker would have to take more time
401
1052
        # than 'timeout' for the client to be disabled, which is as it
402
1053
        # should be.
403
 
        
404
 
        # If a checker exists, make sure it is not a zombie
405
 
        try:
406
 
            pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
407
 
        except (AttributeError, OSError), error:
408
 
            if (isinstance(error, OSError)
409
 
                and error.errno != errno.ECHILD):
410
 
                raise error
411
 
        else:
412
 
            if pid:
413
 
                logger.warning(u"Checker was a zombie")
414
 
                gobject.source_remove(self.checker_callback_tag)
415
 
                self.checker_callback(pid, status,
416
 
                                      self.current_checker_command)
 
1054
 
 
1055
        if self.checker is not None and not self.checker.is_alive():
 
1056
            logger.warning("Checker was not alive; joining")
 
1057
            self.checker.join()
 
1058
            self.checker = None
417
1059
        # Start a new checker if needed
418
1060
        if self.checker is None:
 
1061
            # Escape attributes for the shell
 
1062
            escaped_attrs = {
 
1063
                attr: re.escape(str(getattr(self, attr)))
 
1064
                for attr in self.runtime_expansions}
419
1065
            try:
420
 
                # In case checker_command has exactly one % operator
421
 
                command = self.checker_command % self.host
422
 
            except TypeError:
423
 
                # Escape attributes for the shell
424
 
                escaped_attrs = dict((key,
425
 
                                      re.escape(unicode(str(val),
426
 
                                                        errors=
427
 
                                                        u'replace')))
428
 
                                     for key, val in
429
 
                                     vars(self).iteritems())
430
 
                try:
431
 
                    command = self.checker_command % escaped_attrs
432
 
                except TypeError, error:
433
 
                    logger.error(u'Could not format string "%s":'
434
 
                                 u' %s', self.checker_command, error)
435
 
                    return True # Try again later
 
1066
                command = self.checker_command % escaped_attrs
 
1067
            except TypeError as error:
 
1068
                logger.error('Could not format string "%s"',
 
1069
                             self.checker_command,
 
1070
                             exc_info=error)
 
1071
                return True     # Try again later
436
1072
            self.current_checker_command = command
437
 
            try:
438
 
                logger.info(u"Starting checker %r for %s",
439
 
                            command, self.name)
440
 
                # We don't need to redirect stdout and stderr, since
441
 
                # in normal mode, that is already done by daemon(),
442
 
                # and in debug mode we don't want to.  (Stdin is
443
 
                # always replaced by /dev/null.)
444
 
                self.checker = subprocess.Popen(command,
445
 
                                                close_fds=True,
446
 
                                                shell=True, cwd=u"/")
447
 
                self.checker_callback_tag = (gobject.child_watch_add
448
 
                                             (self.checker.pid,
449
 
                                              self.checker_callback,
450
 
                                              data=command))
451
 
                # The checker may have completed before the gobject
452
 
                # watch was added.  Check for this.
453
 
                pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
454
 
                if pid:
455
 
                    gobject.source_remove(self.checker_callback_tag)
456
 
                    self.checker_callback(pid, status, command)
457
 
            except OSError, error:
458
 
                logger.error(u"Failed to start subprocess: %s",
459
 
                             error)
460
 
        # Re-run this periodically if run by gobject.timeout_add
 
1073
            logger.info("Starting checker %r for %s", command,
 
1074
                        self.name)
 
1075
            # We don't need to redirect stdout and stderr, since
 
1076
            # in normal mode, that is already done by daemon(),
 
1077
            # and in debug mode we don't want to.  (Stdin is
 
1078
            # always replaced by /dev/null.)
 
1079
            # The exception is when not debugging but nevertheless
 
1080
            # running in the foreground; use the previously
 
1081
            # created wnull.
 
1082
            popen_args = {"close_fds": True,
 
1083
                          "shell": True,
 
1084
                          "cwd": "/"}
 
1085
            if (not self.server_settings["debug"]
 
1086
                and self.server_settings["foreground"]):
 
1087
                popen_args.update({"stdout": wnull,
 
1088
                                   "stderr": wnull})
 
1089
            pipe = multiprocessing.Pipe(duplex=False)
 
1090
            self.checker = multiprocessing.Process(
 
1091
                target=call_pipe,
 
1092
                args=(pipe[1], subprocess.call, command),
 
1093
                kwargs=popen_args)
 
1094
            self.checker.start()
 
1095
            self.checker_callback_tag = GLib.io_add_watch(
 
1096
                pipe[0].fileno(), GLib.IO_IN,
 
1097
                self.checker_callback, pipe[0], command)
 
1098
        # Re-run this periodically if run by GLib.timeout_add
461
1099
        return True
462
 
    
 
1100
 
463
1101
    def stop_checker(self):
464
1102
        """Force the checker process, if any, to stop."""
465
1103
        if self.checker_callback_tag:
466
 
            gobject.source_remove(self.checker_callback_tag)
 
1104
            GLib.source_remove(self.checker_callback_tag)
467
1105
            self.checker_callback_tag = None
468
 
        if getattr(self, u"checker", None) is None:
 
1106
        if getattr(self, "checker", None) is None:
469
1107
            return
470
 
        logger.debug(u"Stopping checker for %(name)s", vars(self))
471
 
        try:
472
 
            os.kill(self.checker.pid, signal.SIGTERM)
473
 
            #time.sleep(0.5)
474
 
            #if self.checker.poll() is None:
475
 
            #    os.kill(self.checker.pid, signal.SIGKILL)
476
 
        except OSError, error:
477
 
            if error.errno != errno.ESRCH: # No such process
478
 
                raise
 
1108
        logger.debug("Stopping checker for %(name)s", vars(self))
 
1109
        self.checker.terminate()
479
1110
        self.checker = None
480
1111
 
481
1112
 
482
 
def dbus_service_property(dbus_interface, signature=u"v",
483
 
                          access=u"readwrite", byte_arrays=False):
 
1113
def dbus_service_property(dbus_interface,
 
1114
                          signature="v",
 
1115
                          access="readwrite",
 
1116
                          byte_arrays=False):
484
1117
    """Decorators for marking methods of a DBusObjectWithProperties to
485
1118
    become properties on the D-Bus.
486
 
    
 
1119
 
487
1120
    The decorated method will be called with no arguments by "Get"
488
1121
    and with one argument by "Set".
489
 
    
 
1122
 
490
1123
    The parameters, where they are supported, are the same as
491
1124
    dbus.service.method, except there is only "signature", since the
492
1125
    type from Get() and the type sent to Set() is the same.
493
1126
    """
494
1127
    # Encoding deeply encoded byte arrays is not supported yet by the
495
1128
    # "Set" method, so we fail early here:
496
 
    if byte_arrays and signature != u"ay":
497
 
        raise ValueError(u"Byte arrays not supported for non-'ay'"
498
 
                         u" signature %r" % signature)
 
1129
    if byte_arrays and signature != "ay":
 
1130
        raise ValueError("Byte arrays not supported for non-'ay'"
 
1131
                         " signature {!r}".format(signature))
 
1132
 
499
1133
    def decorator(func):
500
1134
        func._dbus_is_property = True
501
1135
        func._dbus_interface = dbus_interface
502
1136
        func._dbus_signature = signature
503
1137
        func._dbus_access = access
504
1138
        func._dbus_name = func.__name__
505
 
        if func._dbus_name.endswith(u"_dbus_property"):
 
1139
        if func._dbus_name.endswith("_dbus_property"):
506
1140
            func._dbus_name = func._dbus_name[:-14]
507
 
        func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
508
 
        return func
 
1141
        func._dbus_get_args_options = {'byte_arrays': byte_arrays}
 
1142
        return func
 
1143
 
 
1144
    return decorator
 
1145
 
 
1146
 
 
1147
def dbus_interface_annotations(dbus_interface):
 
1148
    """Decorator for marking functions returning interface annotations
 
1149
 
 
1150
    Usage:
 
1151
 
 
1152
    @dbus_interface_annotations("org.example.Interface")
 
1153
    def _foo(self):  # Function name does not matter
 
1154
        return {"org.freedesktop.DBus.Deprecated": "true",
 
1155
                "org.freedesktop.DBus.Property.EmitsChangedSignal":
 
1156
                    "false"}
 
1157
    """
 
1158
 
 
1159
    def decorator(func):
 
1160
        func._dbus_is_interface = True
 
1161
        func._dbus_interface = dbus_interface
 
1162
        func._dbus_name = dbus_interface
 
1163
        return func
 
1164
 
 
1165
    return decorator
 
1166
 
 
1167
 
 
1168
def dbus_annotations(annotations):
 
1169
    """Decorator to annotate D-Bus methods, signals or properties
 
1170
    Usage:
 
1171
 
 
1172
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
 
1173
                       "org.freedesktop.DBus.Property."
 
1174
                       "EmitsChangedSignal": "false"})
 
1175
    @dbus_service_property("org.example.Interface", signature="b",
 
1176
                           access="r")
 
1177
    def Property_dbus_property(self):
 
1178
        return dbus.Boolean(False)
 
1179
 
 
1180
    See also the DBusObjectWithAnnotations class.
 
1181
    """
 
1182
 
 
1183
    def decorator(func):
 
1184
        func._dbus_annotations = annotations
 
1185
        return func
 
1186
 
509
1187
    return decorator
510
1188
 
511
1189
 
512
1190
class DBusPropertyException(dbus.exceptions.DBusException):
513
1191
    """A base class for D-Bus property-related exceptions
514
1192
    """
515
 
    def __unicode__(self):
516
 
        return unicode(str(self))
 
1193
    pass
517
1194
 
518
1195
 
519
1196
class DBusPropertyAccessException(DBusPropertyException):
528
1205
    pass
529
1206
 
530
1207
 
531
 
class DBusObjectWithProperties(dbus.service.Object):
 
1208
class DBusObjectWithAnnotations(dbus.service.Object):
 
1209
    """A D-Bus object with annotations.
 
1210
 
 
1211
    Classes inheriting from this can use the dbus_annotations
 
1212
    decorator to add annotations to methods or signals.
 
1213
    """
 
1214
 
 
1215
    @staticmethod
 
1216
    def _is_dbus_thing(thing):
 
1217
        """Returns a function testing if an attribute is a D-Bus thing
 
1218
 
 
1219
        If called like _is_dbus_thing("method") it returns a function
 
1220
        suitable for use as predicate to inspect.getmembers().
 
1221
        """
 
1222
        return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
 
1223
                                   False)
 
1224
 
 
1225
    def _get_all_dbus_things(self, thing):
 
1226
        """Returns a generator of (name, attribute) pairs
 
1227
        """
 
1228
        return ((getattr(athing.__get__(self), "_dbus_name", name),
 
1229
                 athing.__get__(self))
 
1230
                for cls in self.__class__.__mro__
 
1231
                for name, athing in
 
1232
                inspect.getmembers(cls, self._is_dbus_thing(thing)))
 
1233
 
 
1234
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
 
1235
                         out_signature="s",
 
1236
                         path_keyword='object_path',
 
1237
                         connection_keyword='connection')
 
1238
    def Introspect(self, object_path, connection):
 
1239
        """Overloading of standard D-Bus method.
 
1240
 
 
1241
        Inserts annotation tags on methods and signals.
 
1242
        """
 
1243
        xmlstring = dbus.service.Object.Introspect(self, object_path,
 
1244
                                                   connection)
 
1245
        try:
 
1246
            document = xml.dom.minidom.parseString(xmlstring)
 
1247
 
 
1248
            for if_tag in document.getElementsByTagName("interface"):
 
1249
                # Add annotation tags
 
1250
                for typ in ("method", "signal"):
 
1251
                    for tag in if_tag.getElementsByTagName(typ):
 
1252
                        annots = dict()
 
1253
                        for name, prop in (self.
 
1254
                                           _get_all_dbus_things(typ)):
 
1255
                            if (name == tag.getAttribute("name")
 
1256
                                and prop._dbus_interface
 
1257
                                == if_tag.getAttribute("name")):
 
1258
                                annots.update(getattr(
 
1259
                                    prop, "_dbus_annotations", {}))
 
1260
                        for name, value in annots.items():
 
1261
                            ann_tag = document.createElement(
 
1262
                                "annotation")
 
1263
                            ann_tag.setAttribute("name", name)
 
1264
                            ann_tag.setAttribute("value", value)
 
1265
                            tag.appendChild(ann_tag)
 
1266
                # Add interface annotation tags
 
1267
                for annotation, value in dict(
 
1268
                    itertools.chain.from_iterable(
 
1269
                        annotations().items()
 
1270
                        for name, annotations
 
1271
                        in self._get_all_dbus_things("interface")
 
1272
                        if name == if_tag.getAttribute("name")
 
1273
                        )).items():
 
1274
                    ann_tag = document.createElement("annotation")
 
1275
                    ann_tag.setAttribute("name", annotation)
 
1276
                    ann_tag.setAttribute("value", value)
 
1277
                    if_tag.appendChild(ann_tag)
 
1278
                # Fix argument name for the Introspect method itself
 
1279
                if (if_tag.getAttribute("name")
 
1280
                    == dbus.INTROSPECTABLE_IFACE):
 
1281
                    for cn in if_tag.getElementsByTagName("method"):
 
1282
                        if cn.getAttribute("name") == "Introspect":
 
1283
                            for arg in cn.getElementsByTagName("arg"):
 
1284
                                if (arg.getAttribute("direction")
 
1285
                                    == "out"):
 
1286
                                    arg.setAttribute("name",
 
1287
                                                     "xml_data")
 
1288
            xmlstring = document.toxml("utf-8")
 
1289
            document.unlink()
 
1290
        except (AttributeError, xml.dom.DOMException,
 
1291
                xml.parsers.expat.ExpatError) as error:
 
1292
            logger.error("Failed to override Introspection method",
 
1293
                         exc_info=error)
 
1294
        return xmlstring
 
1295
 
 
1296
 
 
1297
class DBusObjectWithProperties(DBusObjectWithAnnotations):
532
1298
    """A D-Bus object with properties.
533
1299
 
534
1300
    Classes inheriting from this can use the dbus_service_property
535
1301
    decorator to expose methods as D-Bus properties.  It exposes the
536
1302
    standard Get(), Set(), and GetAll() methods on the D-Bus.
537
1303
    """
538
 
    
539
 
    @staticmethod
540
 
    def _is_dbus_property(obj):
541
 
        return getattr(obj, u"_dbus_is_property", False)
542
 
    
543
 
    def _get_all_dbus_properties(self):
544
 
        """Returns a generator of (name, attribute) pairs
545
 
        """
546
 
        return ((prop._dbus_name, prop)
547
 
                for name, prop in
548
 
                inspect.getmembers(self, self._is_dbus_property))
549
 
    
 
1304
 
550
1305
    def _get_dbus_property(self, interface_name, property_name):
551
1306
        """Returns a bound method if one exists which is a D-Bus
552
1307
        property with the specified name and interface.
553
1308
        """
554
 
        for name in (property_name,
555
 
                     property_name + u"_dbus_property"):
556
 
            prop = getattr(self, name, None)
557
 
            if (prop is None
558
 
                or not self._is_dbus_property(prop)
559
 
                or prop._dbus_name != property_name
560
 
                or (interface_name and prop._dbus_interface
561
 
                    and interface_name != prop._dbus_interface)):
562
 
                continue
563
 
            return prop
 
1309
        for cls in self.__class__.__mro__:
 
1310
            for name, value in inspect.getmembers(
 
1311
                    cls, self._is_dbus_thing("property")):
 
1312
                if (value._dbus_name == property_name
 
1313
                    and value._dbus_interface == interface_name):
 
1314
                    return value.__get__(self)
 
1315
 
564
1316
        # No such property
565
 
        raise DBusPropertyNotFound(self.dbus_object_path + u":"
566
 
                                   + interface_name + u"."
567
 
                                   + property_name)
568
 
    
569
 
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
570
 
                         out_signature=u"v")
 
1317
        raise DBusPropertyNotFound("{}:{}.{}".format(
 
1318
            self.dbus_object_path, interface_name, property_name))
 
1319
 
 
1320
    @classmethod
 
1321
    def _get_all_interface_names(cls):
 
1322
        """Get a sequence of all interfaces supported by an object"""
 
1323
        return (name for name in set(getattr(getattr(x, attr),
 
1324
                                             "_dbus_interface", None)
 
1325
                                     for x in (inspect.getmro(cls))
 
1326
                                     for attr in dir(x))
 
1327
                if name is not None)
 
1328
 
 
1329
    @dbus.service.method(dbus.PROPERTIES_IFACE,
 
1330
                         in_signature="ss",
 
1331
                         out_signature="v")
571
1332
    def Get(self, interface_name, property_name):
572
1333
        """Standard D-Bus property Get() method, see D-Bus standard.
573
1334
        """
574
1335
        prop = self._get_dbus_property(interface_name, property_name)
575
 
        if prop._dbus_access == u"write":
 
1336
        if prop._dbus_access == "write":
576
1337
            raise DBusPropertyAccessException(property_name)
577
1338
        value = prop()
578
 
        if not hasattr(value, u"variant_level"):
 
1339
        if not hasattr(value, "variant_level"):
579
1340
            return value
580
1341
        return type(value)(value, variant_level=value.variant_level+1)
581
 
    
582
 
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
 
1342
 
 
1343
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
583
1344
    def Set(self, interface_name, property_name, value):
584
1345
        """Standard D-Bus property Set() method, see D-Bus standard.
585
1346
        """
586
1347
        prop = self._get_dbus_property(interface_name, property_name)
587
 
        if prop._dbus_access == u"read":
 
1348
        if prop._dbus_access == "read":
588
1349
            raise DBusPropertyAccessException(property_name)
589
 
        if prop._dbus_get_args_options[u"byte_arrays"]:
 
1350
        if prop._dbus_get_args_options["byte_arrays"]:
590
1351
            # The byte_arrays option is not supported yet on
591
1352
            # signatures other than "ay".
592
 
            if prop._dbus_signature != u"ay":
593
 
                raise ValueError
594
 
            value = dbus.ByteArray(''.join(unichr(byte)
595
 
                                           for byte in value))
 
1353
            if prop._dbus_signature != "ay":
 
1354
                raise ValueError("Byte arrays not supported for non-"
 
1355
                                 "'ay' signature {!r}"
 
1356
                                 .format(prop._dbus_signature))
 
1357
            value = dbus.ByteArray(b''.join(chr(byte)
 
1358
                                            for byte in value))
596
1359
        prop(value)
597
 
    
598
 
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
599
 
                         out_signature=u"a{sv}")
 
1360
 
 
1361
    @dbus.service.method(dbus.PROPERTIES_IFACE,
 
1362
                         in_signature="s",
 
1363
                         out_signature="a{sv}")
600
1364
    def GetAll(self, interface_name):
601
1365
        """Standard D-Bus property GetAll() method, see D-Bus
602
1366
        standard.
603
1367
 
604
1368
        Note: Will not include properties with access="write".
605
1369
        """
606
 
        all = {}
607
 
        for name, prop in self._get_all_dbus_properties():
 
1370
        properties = {}
 
1371
        for name, prop in self._get_all_dbus_things("property"):
608
1372
            if (interface_name
609
1373
                and interface_name != prop._dbus_interface):
610
1374
                # Interface non-empty but did not match
611
1375
                continue
612
1376
            # Ignore write-only properties
613
 
            if prop._dbus_access == u"write":
 
1377
            if prop._dbus_access == "write":
614
1378
                continue
615
1379
            value = prop()
616
 
            if not hasattr(value, u"variant_level"):
617
 
                all[name] = value
 
1380
            if not hasattr(value, "variant_level"):
 
1381
                properties[name] = value
618
1382
                continue
619
 
            all[name] = type(value)(value, variant_level=
620
 
                                    value.variant_level+1)
621
 
        return dbus.Dictionary(all, signature=u"sv")
622
 
    
 
1383
            properties[name] = type(value)(
 
1384
                value, variant_level=value.variant_level + 1)
 
1385
        return dbus.Dictionary(properties, signature="sv")
 
1386
 
 
1387
    @dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
 
1388
    def PropertiesChanged(self, interface_name, changed_properties,
 
1389
                          invalidated_properties):
 
1390
        """Standard D-Bus PropertiesChanged() signal, see D-Bus
 
1391
        standard.
 
1392
        """
 
1393
        pass
 
1394
 
623
1395
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
624
 
                         out_signature=u"s",
 
1396
                         out_signature="s",
625
1397
                         path_keyword='object_path',
626
1398
                         connection_keyword='connection')
627
1399
    def Introspect(self, object_path, connection):
628
 
        """Standard D-Bus method, overloaded to insert property tags.
 
1400
        """Overloading of standard D-Bus method.
 
1401
 
 
1402
        Inserts property tags and interface annotation tags.
629
1403
        """
630
 
        xmlstring = dbus.service.Object.Introspect(self, object_path,
631
 
                                                   connection)
 
1404
        xmlstring = DBusObjectWithAnnotations.Introspect(self,
 
1405
                                                         object_path,
 
1406
                                                         connection)
632
1407
        try:
633
1408
            document = xml.dom.minidom.parseString(xmlstring)
 
1409
 
634
1410
            def make_tag(document, name, prop):
635
 
                e = document.createElement(u"property")
636
 
                e.setAttribute(u"name", name)
637
 
                e.setAttribute(u"type", prop._dbus_signature)
638
 
                e.setAttribute(u"access", prop._dbus_access)
 
1411
                e = document.createElement("property")
 
1412
                e.setAttribute("name", name)
 
1413
                e.setAttribute("type", prop._dbus_signature)
 
1414
                e.setAttribute("access", prop._dbus_access)
639
1415
                return e
640
 
            for if_tag in document.getElementsByTagName(u"interface"):
 
1416
 
 
1417
            for if_tag in document.getElementsByTagName("interface"):
 
1418
                # Add property tags
641
1419
                for tag in (make_tag(document, name, prop)
642
1420
                            for name, prop
643
 
                            in self._get_all_dbus_properties()
 
1421
                            in self._get_all_dbus_things("property")
644
1422
                            if prop._dbus_interface
645
 
                            == if_tag.getAttribute(u"name")):
 
1423
                            == if_tag.getAttribute("name")):
646
1424
                    if_tag.appendChild(tag)
 
1425
                # Add annotation tags for properties
 
1426
                for tag in if_tag.getElementsByTagName("property"):
 
1427
                    annots = dict()
 
1428
                    for name, prop in self._get_all_dbus_things(
 
1429
                            "property"):
 
1430
                        if (name == tag.getAttribute("name")
 
1431
                            and prop._dbus_interface
 
1432
                            == if_tag.getAttribute("name")):
 
1433
                            annots.update(getattr(
 
1434
                                prop, "_dbus_annotations", {}))
 
1435
                    for name, value in annots.items():
 
1436
                        ann_tag = document.createElement(
 
1437
                            "annotation")
 
1438
                        ann_tag.setAttribute("name", name)
 
1439
                        ann_tag.setAttribute("value", value)
 
1440
                        tag.appendChild(ann_tag)
647
1441
                # Add the names to the return values for the
648
1442
                # "org.freedesktop.DBus.Properties" methods
649
 
                if (if_tag.getAttribute(u"name")
650
 
                    == u"org.freedesktop.DBus.Properties"):
651
 
                    for cn in if_tag.getElementsByTagName(u"method"):
652
 
                        if cn.getAttribute(u"name") == u"Get":
653
 
                            for arg in cn.getElementsByTagName(u"arg"):
654
 
                                if (arg.getAttribute(u"direction")
655
 
                                    == u"out"):
656
 
                                    arg.setAttribute(u"name", u"value")
657
 
                        elif cn.getAttribute(u"name") == u"GetAll":
658
 
                            for arg in cn.getElementsByTagName(u"arg"):
659
 
                                if (arg.getAttribute(u"direction")
660
 
                                    == u"out"):
661
 
                                    arg.setAttribute(u"name", u"props")
662
 
            xmlstring = document.toxml(u"utf-8")
663
 
            document.unlink()
664
 
        except (AttributeError, xml.dom.DOMException,
665
 
                xml.parsers.expat.ExpatError), error:
666
 
            logger.error(u"Failed to override Introspection method",
667
 
                         error)
668
 
        return xmlstring
669
 
 
670
 
 
 
1443
                if (if_tag.getAttribute("name")
 
1444
                    == "org.freedesktop.DBus.Properties"):
 
1445
                    for cn in if_tag.getElementsByTagName("method"):
 
1446
                        if cn.getAttribute("name") == "Get":
 
1447
                            for arg in cn.getElementsByTagName("arg"):
 
1448
                                if (arg.getAttribute("direction")
 
1449
                                    == "out"):
 
1450
                                    arg.setAttribute("name", "value")
 
1451
                        elif cn.getAttribute("name") == "GetAll":
 
1452
                            for arg in cn.getElementsByTagName("arg"):
 
1453
                                if (arg.getAttribute("direction")
 
1454
                                    == "out"):
 
1455
                                    arg.setAttribute("name", "props")
 
1456
            xmlstring = document.toxml("utf-8")
 
1457
            document.unlink()
 
1458
        except (AttributeError, xml.dom.DOMException,
 
1459
                xml.parsers.expat.ExpatError) as error:
 
1460
            logger.error("Failed to override Introspection method",
 
1461
                         exc_info=error)
 
1462
        return xmlstring
 
1463
 
 
1464
 
 
1465
try:
 
1466
    dbus.OBJECT_MANAGER_IFACE
 
1467
except AttributeError:
 
1468
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
 
1469
 
 
1470
 
 
1471
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
 
1472
    """A D-Bus object with an ObjectManager.
 
1473
 
 
1474
    Classes inheriting from this exposes the standard
 
1475
    GetManagedObjects call and the InterfacesAdded and
 
1476
    InterfacesRemoved signals on the standard
 
1477
    "org.freedesktop.DBus.ObjectManager" interface.
 
1478
 
 
1479
    Note: No signals are sent automatically; they must be sent
 
1480
    manually.
 
1481
    """
 
1482
    @dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
 
1483
                         out_signature="a{oa{sa{sv}}}")
 
1484
    def GetManagedObjects(self):
 
1485
        """This function must be overridden"""
 
1486
        raise NotImplementedError()
 
1487
 
 
1488
    @dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
 
1489
                         signature="oa{sa{sv}}")
 
1490
    def InterfacesAdded(self, object_path, interfaces_and_properties):
 
1491
        pass
 
1492
 
 
1493
    @dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
 
1494
    def InterfacesRemoved(self, object_path, interfaces):
 
1495
        pass
 
1496
 
 
1497
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
 
1498
                         out_signature="s",
 
1499
                         path_keyword='object_path',
 
1500
                         connection_keyword='connection')
 
1501
    def Introspect(self, object_path, connection):
 
1502
        """Overloading of standard D-Bus method.
 
1503
 
 
1504
        Override return argument name of GetManagedObjects to be
 
1505
        "objpath_interfaces_and_properties"
 
1506
        """
 
1507
        xmlstring = DBusObjectWithAnnotations.Introspect(self,
 
1508
                                                         object_path,
 
1509
                                                         connection)
 
1510
        try:
 
1511
            document = xml.dom.minidom.parseString(xmlstring)
 
1512
 
 
1513
            for if_tag in document.getElementsByTagName("interface"):
 
1514
                # Fix argument name for the GetManagedObjects method
 
1515
                if (if_tag.getAttribute("name")
 
1516
                    == dbus.OBJECT_MANAGER_IFACE):
 
1517
                    for cn in if_tag.getElementsByTagName("method"):
 
1518
                        if (cn.getAttribute("name")
 
1519
                            == "GetManagedObjects"):
 
1520
                            for arg in cn.getElementsByTagName("arg"):
 
1521
                                if (arg.getAttribute("direction")
 
1522
                                    == "out"):
 
1523
                                    arg.setAttribute(
 
1524
                                        "name",
 
1525
                                        "objpath_interfaces"
 
1526
                                        "_and_properties")
 
1527
            xmlstring = document.toxml("utf-8")
 
1528
            document.unlink()
 
1529
        except (AttributeError, xml.dom.DOMException,
 
1530
                xml.parsers.expat.ExpatError) as error:
 
1531
            logger.error("Failed to override Introspection method",
 
1532
                         exc_info=error)
 
1533
        return xmlstring
 
1534
 
 
1535
 
 
1536
def datetime_to_dbus(dt, variant_level=0):
 
1537
    """Convert a UTC datetime.datetime() to a D-Bus type."""
 
1538
    if dt is None:
 
1539
        return dbus.String("", variant_level=variant_level)
 
1540
    return dbus.String(dt.isoformat(), variant_level=variant_level)
 
1541
 
 
1542
 
 
1543
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
 
1544
    """A class decorator; applied to a subclass of
 
1545
    dbus.service.Object, it will add alternate D-Bus attributes with
 
1546
    interface names according to the "alt_interface_names" mapping.
 
1547
    Usage:
 
1548
 
 
1549
    @alternate_dbus_interfaces({"org.example.Interface":
 
1550
                                    "net.example.AlternateInterface"})
 
1551
    class SampleDBusObject(dbus.service.Object):
 
1552
        @dbus.service.method("org.example.Interface")
 
1553
        def SampleDBusMethod():
 
1554
            pass
 
1555
 
 
1556
    The above "SampleDBusMethod" on "SampleDBusObject" will be
 
1557
    reachable via two interfaces: "org.example.Interface" and
 
1558
    "net.example.AlternateInterface", the latter of which will have
 
1559
    its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
 
1560
    "true", unless "deprecate" is passed with a False value.
 
1561
 
 
1562
    This works for methods and signals, and also for D-Bus properties
 
1563
    (from DBusObjectWithProperties) and interfaces (from the
 
1564
    dbus_interface_annotations decorator).
 
1565
    """
 
1566
 
 
1567
    def wrapper(cls):
 
1568
        for orig_interface_name, alt_interface_name in (
 
1569
                alt_interface_names.items()):
 
1570
            attr = {}
 
1571
            interface_names = set()
 
1572
            # Go though all attributes of the class
 
1573
            for attrname, attribute in inspect.getmembers(cls):
 
1574
                # Ignore non-D-Bus attributes, and D-Bus attributes
 
1575
                # with the wrong interface name
 
1576
                if (not hasattr(attribute, "_dbus_interface")
 
1577
                    or not attribute._dbus_interface.startswith(
 
1578
                        orig_interface_name)):
 
1579
                    continue
 
1580
                # Create an alternate D-Bus interface name based on
 
1581
                # the current name
 
1582
                alt_interface = attribute._dbus_interface.replace(
 
1583
                    orig_interface_name, alt_interface_name)
 
1584
                interface_names.add(alt_interface)
 
1585
                # Is this a D-Bus signal?
 
1586
                if getattr(attribute, "_dbus_is_signal", False):
 
1587
                    # Extract the original non-method undecorated
 
1588
                    # function by black magic
 
1589
                    if sys.version_info.major == 2:
 
1590
                        nonmethod_func = (dict(
 
1591
                            zip(attribute.func_code.co_freevars,
 
1592
                                attribute.__closure__))
 
1593
                                          ["func"].cell_contents)
 
1594
                    else:
 
1595
                        nonmethod_func = (dict(
 
1596
                            zip(attribute.__code__.co_freevars,
 
1597
                                attribute.__closure__))
 
1598
                                          ["func"].cell_contents)
 
1599
                    # Create a new, but exactly alike, function
 
1600
                    # object, and decorate it to be a new D-Bus signal
 
1601
                    # with the alternate D-Bus interface name
 
1602
                    new_function = copy_function(nonmethod_func)
 
1603
                    new_function = (dbus.service.signal(
 
1604
                        alt_interface,
 
1605
                        attribute._dbus_signature)(new_function))
 
1606
                    # Copy annotations, if any
 
1607
                    try:
 
1608
                        new_function._dbus_annotations = dict(
 
1609
                            attribute._dbus_annotations)
 
1610
                    except AttributeError:
 
1611
                        pass
 
1612
 
 
1613
                    # Define a creator of a function to call both the
 
1614
                    # original and alternate functions, so both the
 
1615
                    # original and alternate signals gets sent when
 
1616
                    # the function is called
 
1617
                    def fixscope(func1, func2):
 
1618
                        """This function is a scope container to pass
 
1619
                        func1 and func2 to the "call_both" function
 
1620
                        outside of its arguments"""
 
1621
 
 
1622
                        @functools.wraps(func2)
 
1623
                        def call_both(*args, **kwargs):
 
1624
                            """This function will emit two D-Bus
 
1625
                            signals by calling func1 and func2"""
 
1626
                            func1(*args, **kwargs)
 
1627
                            func2(*args, **kwargs)
 
1628
                        # Make wrapper function look like a D-Bus
 
1629
                        # signal
 
1630
                        for name, attr in inspect.getmembers(func2):
 
1631
                            if name.startswith("_dbus_"):
 
1632
                                setattr(call_both, name, attr)
 
1633
 
 
1634
                        return call_both
 
1635
                    # Create the "call_both" function and add it to
 
1636
                    # the class
 
1637
                    attr[attrname] = fixscope(attribute, new_function)
 
1638
                # Is this a D-Bus method?
 
1639
                elif getattr(attribute, "_dbus_is_method", False):
 
1640
                    # Create a new, but exactly alike, function
 
1641
                    # object.  Decorate it to be a new D-Bus method
 
1642
                    # with the alternate D-Bus interface name.  Add it
 
1643
                    # to the class.
 
1644
                    attr[attrname] = (
 
1645
                        dbus.service.method(
 
1646
                            alt_interface,
 
1647
                            attribute._dbus_in_signature,
 
1648
                            attribute._dbus_out_signature)
 
1649
                        (copy_function(attribute)))
 
1650
                    # Copy annotations, if any
 
1651
                    try:
 
1652
                        attr[attrname]._dbus_annotations = dict(
 
1653
                            attribute._dbus_annotations)
 
1654
                    except AttributeError:
 
1655
                        pass
 
1656
                # Is this a D-Bus property?
 
1657
                elif getattr(attribute, "_dbus_is_property", False):
 
1658
                    # Create a new, but exactly alike, function
 
1659
                    # object, and decorate it to be a new D-Bus
 
1660
                    # property with the alternate D-Bus interface
 
1661
                    # name.  Add it to the class.
 
1662
                    attr[attrname] = (dbus_service_property(
 
1663
                        alt_interface, attribute._dbus_signature,
 
1664
                        attribute._dbus_access,
 
1665
                        attribute._dbus_get_args_options
 
1666
                        ["byte_arrays"])
 
1667
                                      (copy_function(attribute)))
 
1668
                    # Copy annotations, if any
 
1669
                    try:
 
1670
                        attr[attrname]._dbus_annotations = dict(
 
1671
                            attribute._dbus_annotations)
 
1672
                    except AttributeError:
 
1673
                        pass
 
1674
                # Is this a D-Bus interface?
 
1675
                elif getattr(attribute, "_dbus_is_interface", False):
 
1676
                    # Create a new, but exactly alike, function
 
1677
                    # object.  Decorate it to be a new D-Bus interface
 
1678
                    # with the alternate D-Bus interface name.  Add it
 
1679
                    # to the class.
 
1680
                    attr[attrname] = (
 
1681
                        dbus_interface_annotations(alt_interface)
 
1682
                        (copy_function(attribute)))
 
1683
            if deprecate:
 
1684
                # Deprecate all alternate interfaces
 
1685
                iname = "_AlternateDBusNames_interface_annotation{}"
 
1686
                for interface_name in interface_names:
 
1687
 
 
1688
                    @dbus_interface_annotations(interface_name)
 
1689
                    def func(self):
 
1690
                        return {"org.freedesktop.DBus.Deprecated":
 
1691
                                "true"}
 
1692
                    # Find an unused name
 
1693
                    for aname in (iname.format(i)
 
1694
                                  for i in itertools.count()):
 
1695
                        if aname not in attr:
 
1696
                            attr[aname] = func
 
1697
                            break
 
1698
            if interface_names:
 
1699
                # Replace the class with a new subclass of it with
 
1700
                # methods, signals, etc. as created above.
 
1701
                if sys.version_info.major == 2:
 
1702
                    cls = type(b"{}Alternate".format(cls.__name__),
 
1703
                               (cls, ), attr)
 
1704
                else:
 
1705
                    cls = type("{}Alternate".format(cls.__name__),
 
1706
                               (cls, ), attr)
 
1707
        return cls
 
1708
 
 
1709
    return wrapper
 
1710
 
 
1711
 
 
1712
@alternate_dbus_interfaces({"se.recompile.Mandos":
 
1713
                            "se.bsnet.fukt.Mandos"})
671
1714
class ClientDBus(Client, DBusObjectWithProperties):
672
1715
    """A Client class using D-Bus
673
 
    
 
1716
 
674
1717
    Attributes:
675
1718
    dbus_object_path: dbus.ObjectPath
676
1719
    bus: dbus.SystemBus()
677
1720
    """
 
1721
 
 
1722
    runtime_expansions = (Client.runtime_expansions
 
1723
                          + ("dbus_object_path", ))
 
1724
 
 
1725
    _interface = "se.recompile.Mandos.Client"
 
1726
 
678
1727
    # dbus.service.Object doesn't use super(), so we can't either.
679
 
    
680
 
    def __init__(self, bus = None, *args, **kwargs):
 
1728
 
 
1729
    def __init__(self, bus=None, *args, **kwargs):
681
1730
        self.bus = bus
682
1731
        Client.__init__(self, *args, **kwargs)
683
1732
        # Only now, when this client is initialized, can it show up on
684
1733
        # the D-Bus
685
 
        self.dbus_object_path = (dbus.ObjectPath
686
 
                                 (u"/clients/"
687
 
                                  + self.name.replace(u".", u"_")))
 
1734
        client_object_name = str(self.name).translate(
 
1735
            {ord("."): ord("_"),
 
1736
             ord("-"): ord("_")})
 
1737
        self.dbus_object_path = dbus.ObjectPath(
 
1738
            "/clients/" + client_object_name)
688
1739
        DBusObjectWithProperties.__init__(self, self.bus,
689
1740
                                          self.dbus_object_path)
690
 
    
691
 
    @staticmethod
692
 
    def _datetime_to_dbus(dt, variant_level=0):
693
 
        """Convert a UTC datetime.datetime() to a D-Bus type."""
694
 
        return dbus.String(dt.isoformat(),
695
 
                           variant_level=variant_level)
696
 
    
697
 
    def enable(self):
698
 
        oldstate = getattr(self, u"enabled", False)
699
 
        r = Client.enable(self)
700
 
        if oldstate != self.enabled:
701
 
            # Emit D-Bus signals
702
 
            self.PropertyChanged(dbus.String(u"enabled"),
703
 
                                 dbus.Boolean(True, variant_level=1))
704
 
            self.PropertyChanged(
705
 
                dbus.String(u"last_enabled"),
706
 
                self._datetime_to_dbus(self.last_enabled,
707
 
                                       variant_level=1))
708
 
        return r
709
 
    
710
 
    def disable(self, quiet = False):
711
 
        oldstate = getattr(self, u"enabled", False)
712
 
        r = Client.disable(self, quiet=quiet)
713
 
        if not quiet and oldstate != self.enabled:
714
 
            # Emit D-Bus signal
715
 
            self.PropertyChanged(dbus.String(u"enabled"),
716
 
                                 dbus.Boolean(False, variant_level=1))
717
 
        return r
718
 
    
 
1741
 
 
1742
    def notifychangeproperty(transform_func, dbus_name,
 
1743
                             type_func=lambda x: x,
 
1744
                             variant_level=1,
 
1745
                             invalidate_only=False,
 
1746
                             _interface=_interface):
 
1747
        """ Modify a variable so that it's a property which announces
 
1748
        its changes to DBus.
 
1749
 
 
1750
        transform_fun: Function that takes a value and a variant_level
 
1751
                       and transforms it to a D-Bus type.
 
1752
        dbus_name: D-Bus name of the variable
 
1753
        type_func: Function that transform the value before sending it
 
1754
                   to the D-Bus.  Default: no transform
 
1755
        variant_level: D-Bus variant level.  Default: 1
 
1756
        """
 
1757
        attrname = "_{}".format(dbus_name)
 
1758
 
 
1759
        def setter(self, value):
 
1760
            if hasattr(self, "dbus_object_path"):
 
1761
                if (not hasattr(self, attrname) or
 
1762
                    type_func(getattr(self, attrname, None))
 
1763
                    != type_func(value)):
 
1764
                    if invalidate_only:
 
1765
                        self.PropertiesChanged(
 
1766
                            _interface, dbus.Dictionary(),
 
1767
                            dbus.Array((dbus_name, )))
 
1768
                    else:
 
1769
                        dbus_value = transform_func(
 
1770
                            type_func(value),
 
1771
                            variant_level=variant_level)
 
1772
                        self.PropertyChanged(dbus.String(dbus_name),
 
1773
                                             dbus_value)
 
1774
                        self.PropertiesChanged(
 
1775
                            _interface,
 
1776
                            dbus.Dictionary({dbus.String(dbus_name):
 
1777
                                             dbus_value}),
 
1778
                            dbus.Array())
 
1779
            setattr(self, attrname, value)
 
1780
 
 
1781
        return property(lambda self: getattr(self, attrname), setter)
 
1782
 
 
1783
    expires = notifychangeproperty(datetime_to_dbus, "Expires")
 
1784
    approvals_pending = notifychangeproperty(dbus.Boolean,
 
1785
                                             "ApprovalPending",
 
1786
                                             type_func=bool)
 
1787
    enabled = notifychangeproperty(dbus.Boolean, "Enabled")
 
1788
    last_enabled = notifychangeproperty(datetime_to_dbus,
 
1789
                                        "LastEnabled")
 
1790
    checker = notifychangeproperty(
 
1791
        dbus.Boolean, "CheckerRunning",
 
1792
        type_func=lambda checker: checker is not None)
 
1793
    last_checked_ok = notifychangeproperty(datetime_to_dbus,
 
1794
                                           "LastCheckedOK")
 
1795
    last_checker_status = notifychangeproperty(dbus.Int16,
 
1796
                                               "LastCheckerStatus")
 
1797
    last_approval_request = notifychangeproperty(
 
1798
        datetime_to_dbus, "LastApprovalRequest")
 
1799
    approved_by_default = notifychangeproperty(dbus.Boolean,
 
1800
                                               "ApprovedByDefault")
 
1801
    approval_delay = notifychangeproperty(
 
1802
        dbus.UInt64, "ApprovalDelay",
 
1803
        type_func=lambda td: td.total_seconds() * 1000)
 
1804
    approval_duration = notifychangeproperty(
 
1805
        dbus.UInt64, "ApprovalDuration",
 
1806
        type_func=lambda td: td.total_seconds() * 1000)
 
1807
    host = notifychangeproperty(dbus.String, "Host")
 
1808
    timeout = notifychangeproperty(
 
1809
        dbus.UInt64, "Timeout",
 
1810
        type_func=lambda td: td.total_seconds() * 1000)
 
1811
    extended_timeout = notifychangeproperty(
 
1812
        dbus.UInt64, "ExtendedTimeout",
 
1813
        type_func=lambda td: td.total_seconds() * 1000)
 
1814
    interval = notifychangeproperty(
 
1815
        dbus.UInt64, "Interval",
 
1816
        type_func=lambda td: td.total_seconds() * 1000)
 
1817
    checker_command = notifychangeproperty(dbus.String, "Checker")
 
1818
    secret = notifychangeproperty(dbus.ByteArray, "Secret",
 
1819
                                  invalidate_only=True)
 
1820
 
 
1821
    del notifychangeproperty
 
1822
 
719
1823
    def __del__(self, *args, **kwargs):
720
1824
        try:
721
1825
            self.remove_from_connection()
722
1826
        except LookupError:
723
1827
            pass
724
 
        if hasattr(DBusObjectWithProperties, u"__del__"):
 
1828
        if hasattr(DBusObjectWithProperties, "__del__"):
725
1829
            DBusObjectWithProperties.__del__(self, *args, **kwargs)
726
1830
        Client.__del__(self, *args, **kwargs)
727
 
    
728
 
    def checker_callback(self, pid, condition, command,
729
 
                         *args, **kwargs):
730
 
        self.checker_callback_tag = None
731
 
        self.checker = None
732
 
        # Emit D-Bus signal
733
 
        self.PropertyChanged(dbus.String(u"checker_running"),
734
 
                             dbus.Boolean(False, variant_level=1))
735
 
        if os.WIFEXITED(condition):
736
 
            exitstatus = os.WEXITSTATUS(condition)
 
1831
 
 
1832
    def checker_callback(self, source, condition,
 
1833
                         connection, command, *args, **kwargs):
 
1834
        ret = Client.checker_callback(self, source, condition,
 
1835
                                      connection, command, *args,
 
1836
                                      **kwargs)
 
1837
        exitstatus = self.last_checker_status
 
1838
        if exitstatus >= 0:
737
1839
            # Emit D-Bus signal
738
1840
            self.CheckerCompleted(dbus.Int16(exitstatus),
739
 
                                  dbus.Int64(condition),
 
1841
                                  # This is specific to GNU libC
 
1842
                                  dbus.Int64(exitstatus << 8),
740
1843
                                  dbus.String(command))
741
1844
        else:
742
1845
            # Emit D-Bus signal
743
1846
            self.CheckerCompleted(dbus.Int16(-1),
744
 
                                  dbus.Int64(condition),
 
1847
                                  dbus.Int64(
 
1848
                                      # This is specific to GNU libC
 
1849
                                      (exitstatus << 8)
 
1850
                                      | self.last_checker_signal),
745
1851
                                  dbus.String(command))
746
 
        
747
 
        return Client.checker_callback(self, pid, condition, command,
748
 
                                       *args, **kwargs)
749
 
    
750
 
    def checked_ok(self, *args, **kwargs):
751
 
        r = Client.checked_ok(self, *args, **kwargs)
752
 
        # Emit D-Bus signal
753
 
        self.PropertyChanged(
754
 
            dbus.String(u"last_checked_ok"),
755
 
            (self._datetime_to_dbus(self.last_checked_ok,
756
 
                                    variant_level=1)))
757
 
        return r
758
 
    
 
1852
        return ret
 
1853
 
759
1854
    def start_checker(self, *args, **kwargs):
760
 
        old_checker = self.checker
761
 
        if self.checker is not None:
762
 
            old_checker_pid = self.checker.pid
763
 
        else:
764
 
            old_checker_pid = None
 
1855
        old_checker_pid = getattr(self.checker, "pid", None)
765
1856
        r = Client.start_checker(self, *args, **kwargs)
766
1857
        # Only if new checker process was started
767
1858
        if (self.checker is not None
768
1859
            and old_checker_pid != self.checker.pid):
769
1860
            # Emit D-Bus signal
770
1861
            self.CheckerStarted(self.current_checker_command)
771
 
            self.PropertyChanged(
772
 
                dbus.String(u"checker_running"),
773
 
                dbus.Boolean(True, variant_level=1))
774
 
        return r
775
 
    
776
 
    def stop_checker(self, *args, **kwargs):
777
 
        old_checker = getattr(self, u"checker", None)
778
 
        r = Client.stop_checker(self, *args, **kwargs)
779
 
        if (old_checker is not None
780
 
            and getattr(self, u"checker", None) is None):
781
 
            self.PropertyChanged(dbus.String(u"checker_running"),
782
 
                                 dbus.Boolean(False, variant_level=1))
783
 
        return r
784
 
    
785
 
    ## D-Bus methods, signals & properties
786
 
    _interface = u"se.bsnet.fukt.Mandos.Client"
787
 
    
788
 
    ## Signals
789
 
    
 
1862
        return r
 
1863
 
 
1864
    def _reset_approved(self):
 
1865
        self.approved = None
 
1866
        return False
 
1867
 
 
1868
    def approve(self, value=True):
 
1869
        self.approved = value
 
1870
        GLib.timeout_add(int(self.approval_duration.total_seconds()
 
1871
                             * 1000), self._reset_approved)
 
1872
        self.send_changedstate()
 
1873
 
 
1874
    #  D-Bus methods, signals & properties
 
1875
 
 
1876
    #  Interfaces
 
1877
 
 
1878
    #  Signals
 
1879
 
790
1880
    # CheckerCompleted - signal
791
 
    @dbus.service.signal(_interface, signature=u"nxs")
 
1881
    @dbus.service.signal(_interface, signature="nxs")
792
1882
    def CheckerCompleted(self, exitcode, waitstatus, command):
793
1883
        "D-Bus signal"
794
1884
        pass
795
 
    
 
1885
 
796
1886
    # CheckerStarted - signal
797
 
    @dbus.service.signal(_interface, signature=u"s")
 
1887
    @dbus.service.signal(_interface, signature="s")
798
1888
    def CheckerStarted(self, command):
799
1889
        "D-Bus signal"
800
1890
        pass
801
 
    
 
1891
 
802
1892
    # PropertyChanged - signal
803
 
    @dbus.service.signal(_interface, signature=u"sv")
 
1893
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
 
1894
    @dbus.service.signal(_interface, signature="sv")
804
1895
    def PropertyChanged(self, property, value):
805
1896
        "D-Bus signal"
806
1897
        pass
807
 
    
 
1898
 
808
1899
    # GotSecret - signal
809
1900
    @dbus.service.signal(_interface)
810
1901
    def GotSecret(self):
811
 
        "D-Bus signal"
 
1902
        """D-Bus signal
 
1903
        Is sent after a successful transfer of secret from the Mandos
 
1904
        server to mandos-client
 
1905
        """
812
1906
        pass
813
 
    
 
1907
 
814
1908
    # Rejected - signal
815
 
    @dbus.service.signal(_interface)
816
 
    def Rejected(self):
 
1909
    @dbus.service.signal(_interface, signature="s")
 
1910
    def Rejected(self, reason):
817
1911
        "D-Bus signal"
818
1912
        pass
819
 
    
820
 
    ## Methods
821
 
    
 
1913
 
 
1914
    # NeedApproval - signal
 
1915
    @dbus.service.signal(_interface, signature="tb")
 
1916
    def NeedApproval(self, timeout, default):
 
1917
        "D-Bus signal"
 
1918
        return self.need_approval()
 
1919
 
 
1920
    #  Methods
 
1921
 
 
1922
    # Approve - method
 
1923
    @dbus.service.method(_interface, in_signature="b")
 
1924
    def Approve(self, value):
 
1925
        self.approve(value)
 
1926
 
822
1927
    # CheckedOK - method
823
1928
    @dbus.service.method(_interface)
824
1929
    def CheckedOK(self):
825
 
        return self.checked_ok()
826
 
    
 
1930
        self.checked_ok()
 
1931
 
827
1932
    # Enable - method
 
1933
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
828
1934
    @dbus.service.method(_interface)
829
1935
    def Enable(self):
830
1936
        "D-Bus method"
831
1937
        self.enable()
832
 
    
 
1938
 
833
1939
    # StartChecker - method
 
1940
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
834
1941
    @dbus.service.method(_interface)
835
1942
    def StartChecker(self):
836
1943
        "D-Bus method"
837
1944
        self.start_checker()
838
 
    
 
1945
 
839
1946
    # Disable - method
 
1947
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
840
1948
    @dbus.service.method(_interface)
841
1949
    def Disable(self):
842
1950
        "D-Bus method"
843
1951
        self.disable()
844
 
    
 
1952
 
845
1953
    # StopChecker - method
 
1954
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
846
1955
    @dbus.service.method(_interface)
847
1956
    def StopChecker(self):
848
1957
        self.stop_checker()
849
 
    
850
 
    ## Properties
851
 
    
852
 
    # name - property
853
 
    @dbus_service_property(_interface, signature=u"s", access=u"read")
854
 
    def name_dbus_property(self):
 
1958
 
 
1959
    #  Properties
 
1960
 
 
1961
    # ApprovalPending - property
 
1962
    @dbus_service_property(_interface, signature="b", access="read")
 
1963
    def ApprovalPending_dbus_property(self):
 
1964
        return dbus.Boolean(bool(self.approvals_pending))
 
1965
 
 
1966
    # ApprovedByDefault - property
 
1967
    @dbus_service_property(_interface,
 
1968
                           signature="b",
 
1969
                           access="readwrite")
 
1970
    def ApprovedByDefault_dbus_property(self, value=None):
 
1971
        if value is None:       # get
 
1972
            return dbus.Boolean(self.approved_by_default)
 
1973
        self.approved_by_default = bool(value)
 
1974
 
 
1975
    # ApprovalDelay - property
 
1976
    @dbus_service_property(_interface,
 
1977
                           signature="t",
 
1978
                           access="readwrite")
 
1979
    def ApprovalDelay_dbus_property(self, value=None):
 
1980
        if value is None:       # get
 
1981
            return dbus.UInt64(self.approval_delay.total_seconds()
 
1982
                               * 1000)
 
1983
        self.approval_delay = datetime.timedelta(0, 0, 0, value)
 
1984
 
 
1985
    # ApprovalDuration - property
 
1986
    @dbus_service_property(_interface,
 
1987
                           signature="t",
 
1988
                           access="readwrite")
 
1989
    def ApprovalDuration_dbus_property(self, value=None):
 
1990
        if value is None:       # get
 
1991
            return dbus.UInt64(self.approval_duration.total_seconds()
 
1992
                               * 1000)
 
1993
        self.approval_duration = datetime.timedelta(0, 0, 0, value)
 
1994
 
 
1995
    # Name - property
 
1996
    @dbus_annotations(
 
1997
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
 
1998
    @dbus_service_property(_interface, signature="s", access="read")
 
1999
    def Name_dbus_property(self):
855
2000
        return dbus.String(self.name)
856
 
    
857
 
    # fingerprint - property
858
 
    @dbus_service_property(_interface, signature=u"s", access=u"read")
859
 
    def fingerprint_dbus_property(self):
 
2001
 
 
2002
    # Fingerprint - property
 
2003
    @dbus_annotations(
 
2004
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
 
2005
    @dbus_service_property(_interface, signature="s", access="read")
 
2006
    def Fingerprint_dbus_property(self):
860
2007
        return dbus.String(self.fingerprint)
861
 
    
862
 
    # host - property
863
 
    @dbus_service_property(_interface, signature=u"s",
864
 
                           access=u"readwrite")
865
 
    def host_dbus_property(self, value=None):
 
2008
 
 
2009
    # Host - property
 
2010
    @dbus_service_property(_interface,
 
2011
                           signature="s",
 
2012
                           access="readwrite")
 
2013
    def Host_dbus_property(self, value=None):
866
2014
        if value is None:       # get
867
2015
            return dbus.String(self.host)
868
 
        self.host = value
869
 
        # Emit D-Bus signal
870
 
        self.PropertyChanged(dbus.String(u"host"),
871
 
                             dbus.String(value, variant_level=1))
872
 
    
873
 
    # created - property
874
 
    @dbus_service_property(_interface, signature=u"s", access=u"read")
875
 
    def created_dbus_property(self):
876
 
        return dbus.String(self._datetime_to_dbus(self.created))
877
 
    
878
 
    # last_enabled - property
879
 
    @dbus_service_property(_interface, signature=u"s", access=u"read")
880
 
    def last_enabled_dbus_property(self):
881
 
        if self.last_enabled is None:
882
 
            return dbus.String(u"")
883
 
        return dbus.String(self._datetime_to_dbus(self.last_enabled))
884
 
    
885
 
    # enabled - property
886
 
    @dbus_service_property(_interface, signature=u"b",
887
 
                           access=u"readwrite")
888
 
    def enabled_dbus_property(self, value=None):
 
2016
        self.host = str(value)
 
2017
 
 
2018
    # Created - property
 
2019
    @dbus_annotations(
 
2020
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
 
2021
    @dbus_service_property(_interface, signature="s", access="read")
 
2022
    def Created_dbus_property(self):
 
2023
        return datetime_to_dbus(self.created)
 
2024
 
 
2025
    # LastEnabled - property
 
2026
    @dbus_service_property(_interface, signature="s", access="read")
 
2027
    def LastEnabled_dbus_property(self):
 
2028
        return datetime_to_dbus(self.last_enabled)
 
2029
 
 
2030
    # Enabled - property
 
2031
    @dbus_service_property(_interface,
 
2032
                           signature="b",
 
2033
                           access="readwrite")
 
2034
    def Enabled_dbus_property(self, value=None):
889
2035
        if value is None:       # get
890
2036
            return dbus.Boolean(self.enabled)
891
2037
        if value:
892
2038
            self.enable()
893
2039
        else:
894
2040
            self.disable()
895
 
    
896
 
    # last_checked_ok - property
897
 
    @dbus_service_property(_interface, signature=u"s",
898
 
                           access=u"readwrite")
899
 
    def last_checked_ok_dbus_property(self, value=None):
 
2041
 
 
2042
    # LastCheckedOK - property
 
2043
    @dbus_service_property(_interface,
 
2044
                           signature="s",
 
2045
                           access="readwrite")
 
2046
    def LastCheckedOK_dbus_property(self, value=None):
900
2047
        if value is not None:
901
2048
            self.checked_ok()
902
2049
            return
903
 
        if self.last_checked_ok is None:
904
 
            return dbus.String(u"")
905
 
        return dbus.String(self._datetime_to_dbus(self
906
 
                                                  .last_checked_ok))
907
 
    
908
 
    # timeout - property
909
 
    @dbus_service_property(_interface, signature=u"t",
910
 
                           access=u"readwrite")
911
 
    def timeout_dbus_property(self, value=None):
 
2050
        return datetime_to_dbus(self.last_checked_ok)
 
2051
 
 
2052
    # LastCheckerStatus - property
 
2053
    @dbus_service_property(_interface, signature="n", access="read")
 
2054
    def LastCheckerStatus_dbus_property(self):
 
2055
        return dbus.Int16(self.last_checker_status)
 
2056
 
 
2057
    # Expires - property
 
2058
    @dbus_service_property(_interface, signature="s", access="read")
 
2059
    def Expires_dbus_property(self):
 
2060
        return datetime_to_dbus(self.expires)
 
2061
 
 
2062
    # LastApprovalRequest - property
 
2063
    @dbus_service_property(_interface, signature="s", access="read")
 
2064
    def LastApprovalRequest_dbus_property(self):
 
2065
        return datetime_to_dbus(self.last_approval_request)
 
2066
 
 
2067
    # Timeout - property
 
2068
    @dbus_service_property(_interface,
 
2069
                           signature="t",
 
2070
                           access="readwrite")
 
2071
    def Timeout_dbus_property(self, value=None):
912
2072
        if value is None:       # get
913
 
            return dbus.UInt64(self.timeout_milliseconds())
 
2073
            return dbus.UInt64(self.timeout.total_seconds() * 1000)
 
2074
        old_timeout = self.timeout
914
2075
        self.timeout = datetime.timedelta(0, 0, 0, value)
915
 
        # Emit D-Bus signal
916
 
        self.PropertyChanged(dbus.String(u"timeout"),
917
 
                             dbus.UInt64(value, variant_level=1))
918
 
        if getattr(self, u"disable_initiator_tag", None) is None:
919
 
            return
920
 
        # Reschedule timeout
921
 
        gobject.source_remove(self.disable_initiator_tag)
922
 
        self.disable_initiator_tag = None
923
 
        time_to_die = (self.
924
 
                       _timedelta_to_milliseconds((self
925
 
                                                   .last_checked_ok
926
 
                                                   + self.timeout)
927
 
                                                  - datetime.datetime
928
 
                                                  .utcnow()))
929
 
        if time_to_die <= 0:
930
 
            # The timeout has passed
931
 
            self.disable()
932
 
        else:
933
 
            self.disable_initiator_tag = (gobject.timeout_add
934
 
                                          (time_to_die, self.disable))
935
 
    
936
 
    # interval - property
937
 
    @dbus_service_property(_interface, signature=u"t",
938
 
                           access=u"readwrite")
939
 
    def interval_dbus_property(self, value=None):
940
 
        if value is None:       # get
941
 
            return dbus.UInt64(self.interval_milliseconds())
 
2076
        # Reschedule disabling
 
2077
        if self.enabled:
 
2078
            now = datetime.datetime.utcnow()
 
2079
            self.expires += self.timeout - old_timeout
 
2080
            if self.expires <= now:
 
2081
                # The timeout has passed
 
2082
                self.disable()
 
2083
            else:
 
2084
                if (getattr(self, "disable_initiator_tag", None)
 
2085
                    is None):
 
2086
                    return
 
2087
                GLib.source_remove(self.disable_initiator_tag)
 
2088
                self.disable_initiator_tag = GLib.timeout_add(
 
2089
                    int((self.expires - now).total_seconds() * 1000),
 
2090
                    self.disable)
 
2091
 
 
2092
    # ExtendedTimeout - property
 
2093
    @dbus_service_property(_interface,
 
2094
                           signature="t",
 
2095
                           access="readwrite")
 
2096
    def ExtendedTimeout_dbus_property(self, value=None):
 
2097
        if value is None:       # get
 
2098
            return dbus.UInt64(self.extended_timeout.total_seconds()
 
2099
                               * 1000)
 
2100
        self.extended_timeout = datetime.timedelta(0, 0, 0, value)
 
2101
 
 
2102
    # Interval - property
 
2103
    @dbus_service_property(_interface,
 
2104
                           signature="t",
 
2105
                           access="readwrite")
 
2106
    def Interval_dbus_property(self, value=None):
 
2107
        if value is None:       # get
 
2108
            return dbus.UInt64(self.interval.total_seconds() * 1000)
942
2109
        self.interval = datetime.timedelta(0, 0, 0, value)
943
 
        # Emit D-Bus signal
944
 
        self.PropertyChanged(dbus.String(u"interval"),
945
 
                             dbus.UInt64(value, variant_level=1))
946
 
        if getattr(self, u"checker_initiator_tag", None) is None:
 
2110
        if getattr(self, "checker_initiator_tag", None) is None:
947
2111
            return
948
 
        # Reschedule checker run
949
 
        gobject.source_remove(self.checker_initiator_tag)
950
 
        self.checker_initiator_tag = (gobject.timeout_add
951
 
                                      (value, self.start_checker))
952
 
        self.start_checker()    # Start one now, too
 
2112
        if self.enabled:
 
2113
            # Reschedule checker run
 
2114
            GLib.source_remove(self.checker_initiator_tag)
 
2115
            self.checker_initiator_tag = GLib.timeout_add(
 
2116
                value, self.start_checker)
 
2117
            self.start_checker()  # Start one now, too
953
2118
 
954
 
    # checker - property
955
 
    @dbus_service_property(_interface, signature=u"s",
956
 
                           access=u"readwrite")
957
 
    def checker_dbus_property(self, value=None):
 
2119
    # Checker - property
 
2120
    @dbus_service_property(_interface,
 
2121
                           signature="s",
 
2122
                           access="readwrite")
 
2123
    def Checker_dbus_property(self, value=None):
958
2124
        if value is None:       # get
959
2125
            return dbus.String(self.checker_command)
960
 
        self.checker_command = value
961
 
        # Emit D-Bus signal
962
 
        self.PropertyChanged(dbus.String(u"checker"),
963
 
                             dbus.String(self.checker_command,
964
 
                                         variant_level=1))
965
 
    
966
 
    # checker_running - property
967
 
    @dbus_service_property(_interface, signature=u"b",
968
 
                           access=u"readwrite")
969
 
    def checker_running_dbus_property(self, value=None):
 
2126
        self.checker_command = str(value)
 
2127
 
 
2128
    # CheckerRunning - property
 
2129
    @dbus_service_property(_interface,
 
2130
                           signature="b",
 
2131
                           access="readwrite")
 
2132
    def CheckerRunning_dbus_property(self, value=None):
970
2133
        if value is None:       # get
971
2134
            return dbus.Boolean(self.checker is not None)
972
2135
        if value:
973
2136
            self.start_checker()
974
2137
        else:
975
2138
            self.stop_checker()
976
 
    
977
 
    # object_path - property
978
 
    @dbus_service_property(_interface, signature=u"o", access=u"read")
979
 
    def object_path_dbus_property(self):
980
 
        return self.dbus_object_path # is already a dbus.ObjectPath
981
 
    
982
 
    # secret = property
983
 
    @dbus_service_property(_interface, signature=u"ay",
984
 
                           access=u"write", byte_arrays=True)
985
 
    def secret_dbus_property(self, value):
986
 
        self.secret = str(value)
987
 
    
 
2139
 
 
2140
    # ObjectPath - property
 
2141
    @dbus_annotations(
 
2142
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
 
2143
         "org.freedesktop.DBus.Deprecated": "true"})
 
2144
    @dbus_service_property(_interface, signature="o", access="read")
 
2145
    def ObjectPath_dbus_property(self):
 
2146
        return self.dbus_object_path  # is already a dbus.ObjectPath
 
2147
 
 
2148
    # Secret = property
 
2149
    @dbus_annotations(
 
2150
        {"org.freedesktop.DBus.Property.EmitsChangedSignal":
 
2151
         "invalidates"})
 
2152
    @dbus_service_property(_interface,
 
2153
                           signature="ay",
 
2154
                           access="write",
 
2155
                           byte_arrays=True)
 
2156
    def Secret_dbus_property(self, value):
 
2157
        self.secret = bytes(value)
 
2158
 
988
2159
    del _interface
989
2160
 
990
2161
 
 
2162
class ProxyClient(object):
 
2163
    def __init__(self, child_pipe, fpr, address):
 
2164
        self._pipe = child_pipe
 
2165
        self._pipe.send(('init', fpr, address))
 
2166
        if not self._pipe.recv():
 
2167
            raise KeyError(fpr)
 
2168
 
 
2169
    def __getattribute__(self, name):
 
2170
        if name == '_pipe':
 
2171
            return super(ProxyClient, self).__getattribute__(name)
 
2172
        self._pipe.send(('getattr', name))
 
2173
        data = self._pipe.recv()
 
2174
        if data[0] == 'data':
 
2175
            return data[1]
 
2176
        if data[0] == 'function':
 
2177
 
 
2178
            def func(*args, **kwargs):
 
2179
                self._pipe.send(('funcall', name, args, kwargs))
 
2180
                return self._pipe.recv()[1]
 
2181
 
 
2182
            return func
 
2183
 
 
2184
    def __setattr__(self, name, value):
 
2185
        if name == '_pipe':
 
2186
            return super(ProxyClient, self).__setattr__(name, value)
 
2187
        self._pipe.send(('setattr', name, value))
 
2188
 
 
2189
 
991
2190
class ClientHandler(socketserver.BaseRequestHandler, object):
992
2191
    """A class to handle client connections.
993
 
    
 
2192
 
994
2193
    Instantiated once for each connection to handle it.
995
2194
    Note: This will run in its own forked process."""
996
 
    
 
2195
 
997
2196
    def handle(self):
998
 
        logger.info(u"TCP connection from: %s",
999
 
                    unicode(self.client_address))
1000
 
        logger.debug(u"IPC Pipe FD: %d",
1001
 
                     self.server.child_pipe[1].fileno())
1002
 
        # Open IPC pipe to parent process
1003
 
        with contextlib.nested(self.server.child_pipe[1],
1004
 
                               self.server.parent_pipe[0]
1005
 
                               ) as (ipc, ipc_return):
1006
 
            session = (gnutls.connection
1007
 
                       .ClientSession(self.request,
1008
 
                                      gnutls.connection
1009
 
                                      .X509Credentials()))
1010
 
            
1011
 
            # Note: gnutls.connection.X509Credentials is really a
1012
 
            # generic GnuTLS certificate credentials object so long as
1013
 
            # no X.509 keys are added to it.  Therefore, we can use it
1014
 
            # here despite using OpenPGP certificates.
1015
 
            
1016
 
            #priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1017
 
            #                      u"+AES-256-CBC", u"+SHA1",
1018
 
            #                      u"+COMP-NULL", u"+CTYPE-OPENPGP",
1019
 
            #                      u"+DHE-DSS"))
 
2197
        with contextlib.closing(self.server.child_pipe) as child_pipe:
 
2198
            logger.info("TCP connection from: %s",
 
2199
                        str(self.client_address))
 
2200
            logger.debug("Pipe FD: %d",
 
2201
                         self.server.child_pipe.fileno())
 
2202
 
 
2203
            session = gnutls.ClientSession(self.request)
 
2204
 
 
2205
            # priority = ':'.join(("NONE", "+VERS-TLS1.1",
 
2206
            #                       "+AES-256-CBC", "+SHA1",
 
2207
            #                       "+COMP-NULL", "+CTYPE-OPENPGP",
 
2208
            #                       "+DHE-DSS"))
1020
2209
            # Use a fallback default, since this MUST be set.
1021
2210
            priority = self.server.gnutls_priority
1022
2211
            if priority is None:
1023
 
                priority = u"NORMAL"
1024
 
            (gnutls.library.functions
1025
 
             .gnutls_priority_set_direct(session._c_object,
1026
 
                                         priority, None))
1027
 
            
 
2212
                priority = "NORMAL"
 
2213
            gnutls.priority_set_direct(session._c_object,
 
2214
                                       priority.encode("utf-8"),
 
2215
                                       None)
 
2216
 
1028
2217
            # Start communication using the Mandos protocol
1029
2218
            # Get protocol number
1030
2219
            line = self.request.makefile().readline()
1031
 
            logger.debug(u"Protocol version: %r", line)
 
2220
            logger.debug("Protocol version: %r", line)
1032
2221
            try:
1033
2222
                if int(line.strip().split()[0]) > 1:
1034
 
                    raise RuntimeError
1035
 
            except (ValueError, IndexError, RuntimeError), error:
1036
 
                logger.error(u"Unknown protocol version: %s", error)
 
2223
                    raise RuntimeError(line)
 
2224
            except (ValueError, IndexError, RuntimeError) as error:
 
2225
                logger.error("Unknown protocol version: %s", error)
1037
2226
                return
1038
 
            
 
2227
 
1039
2228
            # Start GnuTLS connection
1040
2229
            try:
1041
2230
                session.handshake()
1042
 
            except gnutls.errors.GNUTLSError, error:
1043
 
                logger.warning(u"Handshake failed: %s", error)
 
2231
            except gnutls.Error as error:
 
2232
                logger.warning("Handshake failed: %s", error)
1044
2233
                # Do not run session.bye() here: the session is not
1045
2234
                # established.  Just abandon the request.
1046
2235
                return
1047
 
            logger.debug(u"Handshake succeeded")
 
2236
            logger.debug("Handshake succeeded")
 
2237
 
 
2238
            approval_required = False
1048
2239
            try:
1049
2240
                try:
1050
 
                    fpr = self.fingerprint(self.peer_certificate
1051
 
                                           (session))
1052
 
                except (TypeError, gnutls.errors.GNUTLSError), error:
1053
 
                    logger.warning(u"Bad certificate: %s", error)
1054
 
                    return
1055
 
                logger.debug(u"Fingerprint: %s", fpr)
1056
 
 
1057
 
                for c in self.server.clients:
1058
 
                    if c.fingerprint == fpr:
1059
 
                        client = c
 
2241
                    fpr = self.fingerprint(
 
2242
                        self.peer_certificate(session))
 
2243
                except (TypeError, gnutls.Error) as error:
 
2244
                    logger.warning("Bad certificate: %s", error)
 
2245
                    return
 
2246
                logger.debug("Fingerprint: %s", fpr)
 
2247
 
 
2248
                try:
 
2249
                    client = ProxyClient(child_pipe, fpr,
 
2250
                                         self.client_address)
 
2251
                except KeyError:
 
2252
                    return
 
2253
 
 
2254
                if client.approval_delay:
 
2255
                    delay = client.approval_delay
 
2256
                    client.approvals_pending += 1
 
2257
                    approval_required = True
 
2258
 
 
2259
                while True:
 
2260
                    if not client.enabled:
 
2261
                        logger.info("Client %s is disabled",
 
2262
                                    client.name)
 
2263
                        if self.server.use_dbus:
 
2264
                            # Emit D-Bus signal
 
2265
                            client.Rejected("Disabled")
 
2266
                        return
 
2267
 
 
2268
                    if client.approved or not client.approval_delay:
 
2269
                        # We are approved or approval is disabled
1060
2270
                        break
1061
 
                else:
1062
 
                    ipc.write(u"NOTFOUND %s %s\n"
1063
 
                              % (fpr, unicode(self.client_address)))
1064
 
                    return
1065
 
                
1066
 
                class ClientProxy(object):
1067
 
                    """Client proxy object.  Not for calling methods."""
1068
 
                    def __init__(self, client):
1069
 
                        self.client = client
1070
 
                    def __getattr__(self, name):
1071
 
                        if name.startswith("ipc_"):
1072
 
                            def tempfunc():
1073
 
                                ipc.write("%s %s\n" % (name[4:].upper(),
1074
 
                                                       self.client.name))
1075
 
                            return tempfunc
1076
 
                        if not hasattr(self.client, name):
1077
 
                            raise AttributeError
1078
 
                        ipc.write(u"GETATTR %s %s\n"
1079
 
                                  % (name, self.client.fingerprint))
1080
 
                        return pickle.load(ipc_return)
1081
 
                clientproxy = ClientProxy(client)
1082
 
                # Have to check if client.enabled, since it is
1083
 
                # possible that the client was disabled since the
1084
 
                # GnuTLS session was established.
1085
 
                if not clientproxy.enabled:
1086
 
                    clientproxy.ipc_disabled()
1087
 
                    return
1088
 
                
1089
 
                clientproxy.ipc_sending()
1090
 
                sent_size = 0
1091
 
                while sent_size < len(client.secret):
1092
 
                    sent = session.send(client.secret[sent_size:])
1093
 
                    logger.debug(u"Sent: %d, remaining: %d",
1094
 
                                 sent, len(client.secret)
1095
 
                                 - (sent_size + sent))
1096
 
                    sent_size += sent
 
2271
                    elif client.approved is None:
 
2272
                        logger.info("Client %s needs approval",
 
2273
                                    client.name)
 
2274
                        if self.server.use_dbus:
 
2275
                            # Emit D-Bus signal
 
2276
                            client.NeedApproval(
 
2277
                                client.approval_delay.total_seconds()
 
2278
                                * 1000, client.approved_by_default)
 
2279
                    else:
 
2280
                        logger.warning("Client %s was not approved",
 
2281
                                       client.name)
 
2282
                        if self.server.use_dbus:
 
2283
                            # Emit D-Bus signal
 
2284
                            client.Rejected("Denied")
 
2285
                        return
 
2286
 
 
2287
                    # wait until timeout or approved
 
2288
                    time = datetime.datetime.now()
 
2289
                    client.changedstate.acquire()
 
2290
                    client.changedstate.wait(delay.total_seconds())
 
2291
                    client.changedstate.release()
 
2292
                    time2 = datetime.datetime.now()
 
2293
                    if (time2 - time) >= delay:
 
2294
                        if not client.approved_by_default:
 
2295
                            logger.warning("Client %s timed out while"
 
2296
                                           " waiting for approval",
 
2297
                                           client.name)
 
2298
                            if self.server.use_dbus:
 
2299
                                # Emit D-Bus signal
 
2300
                                client.Rejected("Approval timed out")
 
2301
                            return
 
2302
                        else:
 
2303
                            break
 
2304
                    else:
 
2305
                        delay -= time2 - time
 
2306
 
 
2307
                try:
 
2308
                    session.send(client.secret)
 
2309
                except gnutls.Error as error:
 
2310
                    logger.warning("gnutls send failed",
 
2311
                                   exc_info=error)
 
2312
                    return
 
2313
 
 
2314
                logger.info("Sending secret to %s", client.name)
 
2315
                # bump the timeout using extended_timeout
 
2316
                client.bump_timeout(client.extended_timeout)
 
2317
                if self.server.use_dbus:
 
2318
                    # Emit D-Bus signal
 
2319
                    client.GotSecret()
 
2320
 
1097
2321
            finally:
1098
 
                session.bye()
1099
 
    
 
2322
                if approval_required:
 
2323
                    client.approvals_pending -= 1
 
2324
                try:
 
2325
                    session.bye()
 
2326
                except gnutls.Error as error:
 
2327
                    logger.warning("GnuTLS bye failed",
 
2328
                                   exc_info=error)
 
2329
 
1100
2330
    @staticmethod
1101
2331
    def peer_certificate(session):
1102
2332
        "Return the peer's OpenPGP certificate as a bytestring"
1103
2333
        # If not an OpenPGP certificate...
1104
 
        if (gnutls.library.functions
1105
 
            .gnutls_certificate_type_get(session._c_object)
1106
 
            != gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1107
 
            # ...do the normal thing
1108
 
            return session.peer_certificate
 
2334
        if (gnutls.certificate_type_get(session._c_object)
 
2335
            != gnutls.CRT_OPENPGP):
 
2336
            # ...return invalid data
 
2337
            return b""
1109
2338
        list_size = ctypes.c_uint(1)
1110
 
        cert_list = (gnutls.library.functions
1111
 
                     .gnutls_certificate_get_peers
 
2339
        cert_list = (gnutls.certificate_get_peers
1112
2340
                     (session._c_object, ctypes.byref(list_size)))
1113
2341
        if not bool(cert_list) and list_size.value != 0:
1114
 
            raise gnutls.errors.GNUTLSError(u"error getting peer"
1115
 
                                            u" certificate")
 
2342
            raise gnutls.Error("error getting peer certificate")
1116
2343
        if list_size.value == 0:
1117
2344
            return None
1118
2345
        cert = cert_list[0]
1119
2346
        return ctypes.string_at(cert.data, cert.size)
1120
 
    
 
2347
 
1121
2348
    @staticmethod
1122
2349
    def fingerprint(openpgp):
1123
2350
        "Convert an OpenPGP bytestring to a hexdigit fingerprint"
1124
2351
        # New GnuTLS "datum" with the OpenPGP public key
1125
 
        datum = (gnutls.library.types
1126
 
                 .gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1127
 
                                             ctypes.POINTER
1128
 
                                             (ctypes.c_ubyte)),
1129
 
                                 ctypes.c_uint(len(openpgp))))
 
2352
        datum = gnutls.datum_t(
 
2353
            ctypes.cast(ctypes.c_char_p(openpgp),
 
2354
                        ctypes.POINTER(ctypes.c_ubyte)),
 
2355
            ctypes.c_uint(len(openpgp)))
1130
2356
        # New empty GnuTLS certificate
1131
 
        crt = gnutls.library.types.gnutls_openpgp_crt_t()
1132
 
        (gnutls.library.functions
1133
 
         .gnutls_openpgp_crt_init(ctypes.byref(crt)))
 
2357
        crt = gnutls.openpgp_crt_t()
 
2358
        gnutls.openpgp_crt_init(ctypes.byref(crt))
1134
2359
        # Import the OpenPGP public key into the certificate
1135
 
        (gnutls.library.functions
1136
 
         .gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1137
 
                                    gnutls.library.constants
1138
 
                                    .GNUTLS_OPENPGP_FMT_RAW))
 
2360
        gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
 
2361
                                  gnutls.OPENPGP_FMT_RAW)
1139
2362
        # Verify the self signature in the key
1140
2363
        crtverify = ctypes.c_uint()
1141
 
        (gnutls.library.functions
1142
 
         .gnutls_openpgp_crt_verify_self(crt, 0,
1143
 
                                         ctypes.byref(crtverify)))
 
2364
        gnutls.openpgp_crt_verify_self(crt, 0,
 
2365
                                       ctypes.byref(crtverify))
1144
2366
        if crtverify.value != 0:
1145
 
            gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1146
 
            raise (gnutls.errors.CertificateSecurityError
1147
 
                   (u"Verify failed"))
 
2367
            gnutls.openpgp_crt_deinit(crt)
 
2368
            raise gnutls.CertificateSecurityError("Verify failed")
1148
2369
        # New buffer for the fingerprint
1149
2370
        buf = ctypes.create_string_buffer(20)
1150
2371
        buf_len = ctypes.c_size_t()
1151
2372
        # Get the fingerprint from the certificate into the buffer
1152
 
        (gnutls.library.functions
1153
 
         .gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1154
 
                                             ctypes.byref(buf_len)))
 
2373
        gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
 
2374
                                           ctypes.byref(buf_len))
1155
2375
        # Deinit the certificate
1156
 
        gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
 
2376
        gnutls.openpgp_crt_deinit(crt)
1157
2377
        # Convert the buffer to a Python bytestring
1158
2378
        fpr = ctypes.string_at(buf, buf_len.value)
1159
2379
        # Convert the bytestring to hexadecimal notation
1160
 
        hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
 
2380
        hex_fpr = binascii.hexlify(fpr).upper()
1161
2381
        return hex_fpr
1162
2382
 
1163
2383
 
1164
 
class ForkingMixInWithPipes(socketserver.ForkingMixIn, object):
1165
 
    """Like socketserver.ForkingMixIn, but also pass a pipe pair."""
 
2384
class MultiprocessingMixIn(object):
 
2385
    """Like socketserver.ThreadingMixIn, but with multiprocessing"""
 
2386
 
 
2387
    def sub_process_main(self, request, address):
 
2388
        try:
 
2389
            self.finish_request(request, address)
 
2390
        except Exception:
 
2391
            self.handle_error(request, address)
 
2392
        self.close_request(request)
 
2393
 
 
2394
    def process_request(self, request, address):
 
2395
        """Start a new process to process the request."""
 
2396
        proc = multiprocessing.Process(target=self.sub_process_main,
 
2397
                                       args=(request, address))
 
2398
        proc.start()
 
2399
        return proc
 
2400
 
 
2401
 
 
2402
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
 
2403
    """ adds a pipe to the MixIn """
 
2404
 
1166
2405
    def process_request(self, request, client_address):
1167
2406
        """Overrides and wraps the original process_request().
1168
 
        
 
2407
 
1169
2408
        This function creates a new pipe in self.pipe
1170
2409
        """
1171
 
        # Child writes to child_pipe
1172
 
        self.child_pipe = map(os.fdopen, os.pipe(), u"rw", (1, 0))
1173
 
        # Parent writes to parent_pipe
1174
 
        self.parent_pipe = map(os.fdopen, os.pipe(), u"rw", (1, 0))
1175
 
        super(ForkingMixInWithPipes,
1176
 
              self).process_request(request, client_address)
1177
 
        # Close unused ends for parent
1178
 
        self.parent_pipe[0].close() # close read end
1179
 
        self.child_pipe[1].close()  # close write end
1180
 
        self.add_pipe_fds(self.child_pipe[0], self.parent_pipe[1])
1181
 
    def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
 
2410
        parent_pipe, self.child_pipe = multiprocessing.Pipe()
 
2411
 
 
2412
        proc = MultiprocessingMixIn.process_request(self, request,
 
2413
                                                    client_address)
 
2414
        self.child_pipe.close()
 
2415
        self.add_pipe(parent_pipe, proc)
 
2416
 
 
2417
    def add_pipe(self, parent_pipe, proc):
1182
2418
        """Dummy function; override as necessary"""
1183
 
        child_pipe_fd.close()
1184
 
        parent_pipe_fd.close()
1185
 
 
1186
 
 
1187
 
class IPv6_TCPServer(ForkingMixInWithPipes,
 
2419
        raise NotImplementedError()
 
2420
 
 
2421
 
 
2422
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1188
2423
                     socketserver.TCPServer, object):
1189
2424
    """IPv6-capable TCP server.  Accepts 'None' as address and/or port
1190
 
    
 
2425
 
1191
2426
    Attributes:
1192
2427
        enabled:        Boolean; whether this server is activated yet
1193
2428
        interface:      None or a network interface name (string)
1194
2429
        use_ipv6:       Boolean; to use IPv6 or not
1195
2430
    """
 
2431
 
1196
2432
    def __init__(self, server_address, RequestHandlerClass,
1197
 
                 interface=None, use_ipv6=True):
 
2433
                 interface=None,
 
2434
                 use_ipv6=True,
 
2435
                 socketfd=None):
 
2436
        """If socketfd is set, use that file descriptor instead of
 
2437
        creating a new one with socket.socket().
 
2438
        """
1198
2439
        self.interface = interface
1199
2440
        if use_ipv6:
1200
2441
            self.address_family = socket.AF_INET6
 
2442
        if socketfd is not None:
 
2443
            # Save the file descriptor
 
2444
            self.socketfd = socketfd
 
2445
            # Save the original socket.socket() function
 
2446
            self.socket_socket = socket.socket
 
2447
 
 
2448
            # To implement --socket, we monkey patch socket.socket.
 
2449
            #
 
2450
            # (When socketserver.TCPServer is a new-style class, we
 
2451
            # could make self.socket into a property instead of monkey
 
2452
            # patching socket.socket.)
 
2453
            #
 
2454
            # Create a one-time-only replacement for socket.socket()
 
2455
            @functools.wraps(socket.socket)
 
2456
            def socket_wrapper(*args, **kwargs):
 
2457
                # Restore original function so subsequent calls are
 
2458
                # not affected.
 
2459
                socket.socket = self.socket_socket
 
2460
                del self.socket_socket
 
2461
                # This time only, return a new socket object from the
 
2462
                # saved file descriptor.
 
2463
                return socket.fromfd(self.socketfd, *args, **kwargs)
 
2464
            # Replace socket.socket() function with wrapper
 
2465
            socket.socket = socket_wrapper
 
2466
        # The socketserver.TCPServer.__init__ will call
 
2467
        # socket.socket(), which might be our replacement,
 
2468
        # socket_wrapper(), if socketfd was set.
1201
2469
        socketserver.TCPServer.__init__(self, server_address,
1202
2470
                                        RequestHandlerClass)
 
2471
 
1203
2472
    def server_bind(self):
1204
2473
        """This overrides the normal server_bind() function
1205
2474
        to bind to an interface if one was specified, and also NOT to
1206
2475
        bind to an address or port if they were not specified."""
 
2476
        global SO_BINDTODEVICE
1207
2477
        if self.interface is not None:
1208
2478
            if SO_BINDTODEVICE is None:
1209
 
                logger.error(u"SO_BINDTODEVICE does not exist;"
1210
 
                             u" cannot bind to interface %s",
1211
 
                             self.interface)
1212
 
            else:
1213
 
                try:
1214
 
                    self.socket.setsockopt(socket.SOL_SOCKET,
1215
 
                                           SO_BINDTODEVICE,
1216
 
                                           str(self.interface
1217
 
                                               + u'\0'))
1218
 
                except socket.error, error:
1219
 
                    if error[0] == errno.EPERM:
1220
 
                        logger.error(u"No permission to"
1221
 
                                     u" bind to interface %s",
1222
 
                                     self.interface)
1223
 
                    elif error[0] == errno.ENOPROTOOPT:
1224
 
                        logger.error(u"SO_BINDTODEVICE not available;"
1225
 
                                     u" cannot bind to interface %s",
1226
 
                                     self.interface)
1227
 
                    else:
1228
 
                        raise
 
2479
                # Fall back to a hard-coded value which seems to be
 
2480
                # common enough.
 
2481
                logger.warning("SO_BINDTODEVICE not found, trying 25")
 
2482
                SO_BINDTODEVICE = 25
 
2483
            try:
 
2484
                self.socket.setsockopt(
 
2485
                    socket.SOL_SOCKET, SO_BINDTODEVICE,
 
2486
                    (self.interface + "\0").encode("utf-8"))
 
2487
            except socket.error as error:
 
2488
                if error.errno == errno.EPERM:
 
2489
                    logger.error("No permission to bind to"
 
2490
                                 " interface %s", self.interface)
 
2491
                elif error.errno == errno.ENOPROTOOPT:
 
2492
                    logger.error("SO_BINDTODEVICE not available;"
 
2493
                                 " cannot bind to interface %s",
 
2494
                                 self.interface)
 
2495
                elif error.errno == errno.ENODEV:
 
2496
                    logger.error("Interface %s does not exist,"
 
2497
                                 " cannot bind", self.interface)
 
2498
                else:
 
2499
                    raise
1229
2500
        # Only bind(2) the socket if we really need to.
1230
2501
        if self.server_address[0] or self.server_address[1]:
1231
2502
            if not self.server_address[0]:
1232
2503
                if self.address_family == socket.AF_INET6:
1233
 
                    any_address = u"::" # in6addr_any
 
2504
                    any_address = "::"  # in6addr_any
1234
2505
                else:
1235
 
                    any_address = socket.INADDR_ANY
 
2506
                    any_address = "0.0.0.0"  # INADDR_ANY
1236
2507
                self.server_address = (any_address,
1237
2508
                                       self.server_address[1])
1238
2509
            elif not self.server_address[1]:
1239
 
                self.server_address = (self.server_address[0],
1240
 
                                       0)
 
2510
                self.server_address = (self.server_address[0], 0)
1241
2511
#                 if self.interface:
1242
2512
#                     self.server_address = (self.server_address[0],
1243
2513
#                                            0, # port
1249
2519
 
1250
2520
class MandosServer(IPv6_TCPServer):
1251
2521
    """Mandos server.
1252
 
    
 
2522
 
1253
2523
    Attributes:
1254
2524
        clients:        set of Client objects
1255
2525
        gnutls_priority GnuTLS priority string
1256
2526
        use_dbus:       Boolean; to emit D-Bus signals or not
1257
 
    
1258
 
    Assumes a gobject.MainLoop event loop.
 
2527
 
 
2528
    Assumes a GLib.MainLoop event loop.
1259
2529
    """
 
2530
 
1260
2531
    def __init__(self, server_address, RequestHandlerClass,
1261
 
                 interface=None, use_ipv6=True, clients=None,
1262
 
                 gnutls_priority=None, use_dbus=True):
 
2532
                 interface=None,
 
2533
                 use_ipv6=True,
 
2534
                 clients=None,
 
2535
                 gnutls_priority=None,
 
2536
                 use_dbus=True,
 
2537
                 socketfd=None):
1263
2538
        self.enabled = False
1264
2539
        self.clients = clients
1265
2540
        if self.clients is None:
1266
 
            self.clients = set()
 
2541
            self.clients = {}
1267
2542
        self.use_dbus = use_dbus
1268
2543
        self.gnutls_priority = gnutls_priority
1269
2544
        IPv6_TCPServer.__init__(self, server_address,
1270
2545
                                RequestHandlerClass,
1271
 
                                interface = interface,
1272
 
                                use_ipv6 = use_ipv6)
 
2546
                                interface=interface,
 
2547
                                use_ipv6=use_ipv6,
 
2548
                                socketfd=socketfd)
 
2549
 
1273
2550
    def server_activate(self):
1274
2551
        if self.enabled:
1275
2552
            return socketserver.TCPServer.server_activate(self)
 
2553
 
1276
2554
    def enable(self):
1277
2555
        self.enabled = True
1278
 
    def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
 
2556
 
 
2557
    def add_pipe(self, parent_pipe, proc):
1279
2558
        # Call "handle_ipc" for both data and EOF events
1280
 
        gobject.io_add_watch(child_pipe_fd.fileno(),
1281
 
                             gobject.IO_IN | gobject.IO_HUP,
1282
 
                             functools.partial(self.handle_ipc,
1283
 
                                               reply = parent_pipe_fd,
1284
 
                                               sender= child_pipe_fd))
1285
 
    def handle_ipc(self, source, condition, reply=None, sender=None):
1286
 
        condition_names = {
1287
 
            gobject.IO_IN: u"IN",   # There is data to read.
1288
 
            gobject.IO_OUT: u"OUT", # Data can be written (without
1289
 
                                    # blocking).
1290
 
            gobject.IO_PRI: u"PRI", # There is urgent data to read.
1291
 
            gobject.IO_ERR: u"ERR", # Error condition.
1292
 
            gobject.IO_HUP: u"HUP"  # Hung up (the connection has been
1293
 
                                    # broken, usually for pipes and
1294
 
                                    # sockets).
1295
 
            }
1296
 
        conditions_string = ' | '.join(name
1297
 
                                       for cond, name in
1298
 
                                       condition_names.iteritems()
1299
 
                                       if cond & condition)
1300
 
        logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1301
 
                     conditions_string)
1302
 
        
1303
 
        # Read a line from the file object
1304
 
        cmdline = sender.readline()
1305
 
        if not cmdline:             # Empty line means end of file
1306
 
            # close the IPC pipes
1307
 
            sender.close()
1308
 
            reply.close()
1309
 
            
1310
 
            # Stop calling this function
1311
 
            return False
1312
 
        
1313
 
        logger.debug(u"IPC command: %r", cmdline)
1314
 
        
1315
 
        # Parse and act on command
1316
 
        cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1317
 
        
1318
 
        if cmd == u"NOTFOUND":
1319
 
            fpr, address = args.split(None, 1)
1320
 
            logger.warning(u"Client not found for fingerprint: %s, ad"
1321
 
                           u"dress: %s", fpr, address)
1322
 
            if self.use_dbus:
1323
 
                # Emit D-Bus signal
1324
 
                mandos_dbus_service.ClientNotFound(fpr, address)
1325
 
        elif cmd == u"DISABLED":
1326
 
            for client in self.clients:
1327
 
                if client.name == args:
1328
 
                    logger.warning(u"Client %s is disabled", args)
1329
 
                    if self.use_dbus:
1330
 
                        # Emit D-Bus signal
1331
 
                        client.Rejected()
1332
 
                    break
1333
 
            else:
1334
 
                logger.error(u"Unknown client %s is disabled", args)
1335
 
        elif cmd == u"SENDING":
1336
 
            for client in self.clients:
1337
 
                if client.name == args:
1338
 
                    logger.info(u"Sending secret to %s", client.name)
1339
 
                    client.checked_ok()
1340
 
                    if self.use_dbus:
1341
 
                        # Emit D-Bus signal
1342
 
                        client.GotSecret()
1343
 
                    break
1344
 
            else:
1345
 
                logger.error(u"Sending secret to unknown client %s",
1346
 
                             args)
1347
 
        elif cmd == u"GETATTR":
1348
 
            attr_name, fpr = args.split(None, 1)
1349
 
            for client in self.clients:
1350
 
                if client.fingerprint == fpr:
1351
 
                    attr_value = getattr(client, attr_name, None)
1352
 
                    logger.debug("IPC reply: %r", attr_value)
1353
 
                    pickle.dump(attr_value, reply)
1354
 
                    break
1355
 
            else:
1356
 
                logger.error(u"Client %s on address %s requesting "
1357
 
                             u"attribute %s not found", fpr, address,
1358
 
                             attr_name)
1359
 
                pickle.dump(None, reply)
 
2559
        GLib.io_add_watch(
 
2560
            parent_pipe.fileno(),
 
2561
            GLib.IO_IN | GLib.IO_HUP,
 
2562
            functools.partial(self.handle_ipc,
 
2563
                              parent_pipe=parent_pipe,
 
2564
                              proc=proc))
 
2565
 
 
2566
    def handle_ipc(self, source, condition,
 
2567
                   parent_pipe=None,
 
2568
                   proc=None,
 
2569
                   client_object=None):
 
2570
        # error, or the other end of multiprocessing.Pipe has closed
 
2571
        if condition & (GLib.IO_ERR | GLib.IO_HUP):
 
2572
            # Wait for other process to exit
 
2573
            proc.join()
 
2574
            return False
 
2575
 
 
2576
        # Read a request from the child
 
2577
        request = parent_pipe.recv()
 
2578
        command = request[0]
 
2579
 
 
2580
        if command == 'init':
 
2581
            fpr = request[1].decode("ascii")
 
2582
            address = request[2]
 
2583
 
 
2584
            for c in self.clients.values():
 
2585
                if c.fingerprint == fpr:
 
2586
                    client = c
 
2587
                    break
 
2588
            else:
 
2589
                logger.info("Client not found for fingerprint: %s, ad"
 
2590
                            "dress: %s", fpr, address)
 
2591
                if self.use_dbus:
 
2592
                    # Emit D-Bus signal
 
2593
                    mandos_dbus_service.ClientNotFound(fpr,
 
2594
                                                       address[0])
 
2595
                parent_pipe.send(False)
 
2596
                return False
 
2597
 
 
2598
            GLib.io_add_watch(
 
2599
                parent_pipe.fileno(),
 
2600
                GLib.IO_IN | GLib.IO_HUP,
 
2601
                functools.partial(self.handle_ipc,
 
2602
                                  parent_pipe=parent_pipe,
 
2603
                                  proc=proc,
 
2604
                                  client_object=client))
 
2605
            parent_pipe.send(True)
 
2606
            # remove the old hook in favor of the new above hook on
 
2607
            # same fileno
 
2608
            return False
 
2609
        if command == 'funcall':
 
2610
            funcname = request[1]
 
2611
            args = request[2]
 
2612
            kwargs = request[3]
 
2613
 
 
2614
            parent_pipe.send(('data', getattr(client_object,
 
2615
                                              funcname)(*args,
 
2616
                                                        **kwargs)))
 
2617
 
 
2618
        if command == 'getattr':
 
2619
            attrname = request[1]
 
2620
            if isinstance(client_object.__getattribute__(attrname),
 
2621
                          collections.Callable):
 
2622
                parent_pipe.send(('function', ))
 
2623
            else:
 
2624
                parent_pipe.send((
 
2625
                    'data', client_object.__getattribute__(attrname)))
 
2626
 
 
2627
        if command == 'setattr':
 
2628
            attrname = request[1]
 
2629
            value = request[2]
 
2630
            setattr(client_object, attrname, value)
 
2631
 
 
2632
        return True
 
2633
 
 
2634
 
 
2635
def rfc3339_duration_to_delta(duration):
 
2636
    """Parse an RFC 3339 "duration" and return a datetime.timedelta
 
2637
 
 
2638
    >>> rfc3339_duration_to_delta("P7D")
 
2639
    datetime.timedelta(7)
 
2640
    >>> rfc3339_duration_to_delta("PT60S")
 
2641
    datetime.timedelta(0, 60)
 
2642
    >>> rfc3339_duration_to_delta("PT60M")
 
2643
    datetime.timedelta(0, 3600)
 
2644
    >>> rfc3339_duration_to_delta("PT24H")
 
2645
    datetime.timedelta(1)
 
2646
    >>> rfc3339_duration_to_delta("P1W")
 
2647
    datetime.timedelta(7)
 
2648
    >>> rfc3339_duration_to_delta("PT5M30S")
 
2649
    datetime.timedelta(0, 330)
 
2650
    >>> rfc3339_duration_to_delta("P1DT3M20S")
 
2651
    datetime.timedelta(1, 200)
 
2652
    """
 
2653
 
 
2654
    # Parsing an RFC 3339 duration with regular expressions is not
 
2655
    # possible - there would have to be multiple places for the same
 
2656
    # values, like seconds.  The current code, while more esoteric, is
 
2657
    # cleaner without depending on a parsing library.  If Python had a
 
2658
    # built-in library for parsing we would use it, but we'd like to
 
2659
    # avoid excessive use of external libraries.
 
2660
 
 
2661
    # New type for defining tokens, syntax, and semantics all-in-one
 
2662
    Token = collections.namedtuple("Token", (
 
2663
        "regexp",  # To match token; if "value" is not None, must have
 
2664
                   # a "group" containing digits
 
2665
        "value",   # datetime.timedelta or None
 
2666
        "followers"))           # Tokens valid after this token
 
2667
    # RFC 3339 "duration" tokens, syntax, and semantics; taken from
 
2668
    # the "duration" ABNF definition in RFC 3339, Appendix A.
 
2669
    token_end = Token(re.compile(r"$"), None, frozenset())
 
2670
    token_second = Token(re.compile(r"(\d+)S"),
 
2671
                         datetime.timedelta(seconds=1),
 
2672
                         frozenset((token_end, )))
 
2673
    token_minute = Token(re.compile(r"(\d+)M"),
 
2674
                         datetime.timedelta(minutes=1),
 
2675
                         frozenset((token_second, token_end)))
 
2676
    token_hour = Token(re.compile(r"(\d+)H"),
 
2677
                       datetime.timedelta(hours=1),
 
2678
                       frozenset((token_minute, token_end)))
 
2679
    token_time = Token(re.compile(r"T"),
 
2680
                       None,
 
2681
                       frozenset((token_hour, token_minute,
 
2682
                                  token_second)))
 
2683
    token_day = Token(re.compile(r"(\d+)D"),
 
2684
                      datetime.timedelta(days=1),
 
2685
                      frozenset((token_time, token_end)))
 
2686
    token_month = Token(re.compile(r"(\d+)M"),
 
2687
                        datetime.timedelta(weeks=4),
 
2688
                        frozenset((token_day, token_end)))
 
2689
    token_year = Token(re.compile(r"(\d+)Y"),
 
2690
                       datetime.timedelta(weeks=52),
 
2691
                       frozenset((token_month, token_end)))
 
2692
    token_week = Token(re.compile(r"(\d+)W"),
 
2693
                       datetime.timedelta(weeks=1),
 
2694
                       frozenset((token_end, )))
 
2695
    token_duration = Token(re.compile(r"P"), None,
 
2696
                           frozenset((token_year, token_month,
 
2697
                                      token_day, token_time,
 
2698
                                      token_week)))
 
2699
    # Define starting values:
 
2700
    # Value so far
 
2701
    value = datetime.timedelta()
 
2702
    found_token = None
 
2703
    # Following valid tokens
 
2704
    followers = frozenset((token_duration, ))
 
2705
    # String left to parse
 
2706
    s = duration
 
2707
    # Loop until end token is found
 
2708
    while found_token is not token_end:
 
2709
        # Search for any currently valid tokens
 
2710
        for token in followers:
 
2711
            match = token.regexp.match(s)
 
2712
            if match is not None:
 
2713
                # Token found
 
2714
                if token.value is not None:
 
2715
                    # Value found, parse digits
 
2716
                    factor = int(match.group(1), 10)
 
2717
                    # Add to value so far
 
2718
                    value += factor * token.value
 
2719
                # Strip token from string
 
2720
                s = token.regexp.sub("", s, 1)
 
2721
                # Go to found token
 
2722
                found_token = token
 
2723
                # Set valid next tokens
 
2724
                followers = found_token.followers
 
2725
                break
1360
2726
        else:
1361
 
            logger.error(u"Unknown IPC command: %r", cmdline)
1362
 
        
1363
 
        # Keep calling this function
1364
 
        return True
 
2727
            # No currently valid tokens were found
 
2728
            raise ValueError("Invalid RFC 3339 duration: {!r}"
 
2729
                             .format(duration))
 
2730
    # End token found
 
2731
    return value
1365
2732
 
1366
2733
 
1367
2734
def string_to_delta(interval):
1368
2735
    """Parse a string and return a datetime.timedelta
1369
 
    
1370
 
    >>> string_to_delta(u'7d')
 
2736
 
 
2737
    >>> string_to_delta('7d')
1371
2738
    datetime.timedelta(7)
1372
 
    >>> string_to_delta(u'60s')
 
2739
    >>> string_to_delta('60s')
1373
2740
    datetime.timedelta(0, 60)
1374
 
    >>> string_to_delta(u'60m')
 
2741
    >>> string_to_delta('60m')
1375
2742
    datetime.timedelta(0, 3600)
1376
 
    >>> string_to_delta(u'24h')
 
2743
    >>> string_to_delta('24h')
1377
2744
    datetime.timedelta(1)
1378
 
    >>> string_to_delta(u'1w')
 
2745
    >>> string_to_delta('1w')
1379
2746
    datetime.timedelta(7)
1380
 
    >>> string_to_delta(u'5m 30s')
 
2747
    >>> string_to_delta('5m 30s')
1381
2748
    datetime.timedelta(0, 330)
1382
2749
    """
 
2750
 
 
2751
    try:
 
2752
        return rfc3339_duration_to_delta(interval)
 
2753
    except ValueError:
 
2754
        pass
 
2755
 
1383
2756
    timevalue = datetime.timedelta(0)
1384
2757
    for s in interval.split():
1385
2758
        try:
1386
 
            suffix = unicode(s[-1])
 
2759
            suffix = s[-1]
1387
2760
            value = int(s[:-1])
1388
 
            if suffix == u"d":
 
2761
            if suffix == "d":
1389
2762
                delta = datetime.timedelta(value)
1390
 
            elif suffix == u"s":
 
2763
            elif suffix == "s":
1391
2764
                delta = datetime.timedelta(0, value)
1392
 
            elif suffix == u"m":
 
2765
            elif suffix == "m":
1393
2766
                delta = datetime.timedelta(0, 0, 0, 0, value)
1394
 
            elif suffix == u"h":
 
2767
            elif suffix == "h":
1395
2768
                delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1396
 
            elif suffix == u"w":
 
2769
            elif suffix == "w":
1397
2770
                delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1398
2771
            else:
1399
 
                raise ValueError(u"Unknown suffix %r" % suffix)
1400
 
        except (ValueError, IndexError), e:
1401
 
            raise ValueError(e.message)
 
2772
                raise ValueError("Unknown suffix {!r}".format(suffix))
 
2773
        except IndexError as e:
 
2774
            raise ValueError(*(e.args))
1402
2775
        timevalue += delta
1403
2776
    return timevalue
1404
2777
 
1405
2778
 
1406
 
def if_nametoindex(interface):
1407
 
    """Call the C function if_nametoindex(), or equivalent
1408
 
    
1409
 
    Note: This function cannot accept a unicode string."""
1410
 
    global if_nametoindex
1411
 
    try:
1412
 
        if_nametoindex = (ctypes.cdll.LoadLibrary
1413
 
                          (ctypes.util.find_library(u"c"))
1414
 
                          .if_nametoindex)
1415
 
    except (OSError, AttributeError):
1416
 
        logger.warning(u"Doing if_nametoindex the hard way")
1417
 
        def if_nametoindex(interface):
1418
 
            "Get an interface index the hard way, i.e. using fcntl()"
1419
 
            SIOCGIFINDEX = 0x8933  # From /usr/include/linux/sockios.h
1420
 
            with contextlib.closing(socket.socket()) as s:
1421
 
                ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1422
 
                                    struct.pack(str(u"16s16x"),
1423
 
                                                interface))
1424
 
            interface_index = struct.unpack(str(u"I"),
1425
 
                                            ifreq[16:20])[0]
1426
 
            return interface_index
1427
 
    return if_nametoindex(interface)
1428
 
 
1429
 
 
1430
 
def daemon(nochdir = False, noclose = False):
 
2779
def daemon(nochdir=False, noclose=False):
1431
2780
    """See daemon(3).  Standard BSD Unix function.
1432
 
    
 
2781
 
1433
2782
    This should really exist as os.daemon, but it doesn't (yet)."""
1434
2783
    if os.fork():
1435
2784
        sys.exit()
1436
2785
    os.setsid()
1437
2786
    if not nochdir:
1438
 
        os.chdir(u"/")
 
2787
        os.chdir("/")
1439
2788
    if os.fork():
1440
2789
        sys.exit()
1441
2790
    if not noclose:
1442
2791
        # Close all standard open file descriptors
1443
 
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
 
2792
        null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1444
2793
        if not stat.S_ISCHR(os.fstat(null).st_mode):
1445
2794
            raise OSError(errno.ENODEV,
1446
 
                          u"%s not a character device"
1447
 
                          % os.path.devnull)
 
2795
                          "{} not a character device"
 
2796
                          .format(os.devnull))
1448
2797
        os.dup2(null, sys.stdin.fileno())
1449
2798
        os.dup2(null, sys.stdout.fileno())
1450
2799
        os.dup2(null, sys.stderr.fileno())
1453
2802
 
1454
2803
 
1455
2804
def main():
1456
 
    
 
2805
 
1457
2806
    ##################################################################
1458
2807
    # Parsing of options, both command line and config file
1459
 
    
1460
 
    parser = optparse.OptionParser(version = "%%prog %s" % version)
1461
 
    parser.add_option("-i", u"--interface", type=u"string",
1462
 
                      metavar="IF", help=u"Bind to interface IF")
1463
 
    parser.add_option("-a", u"--address", type=u"string",
1464
 
                      help=u"Address to listen for requests on")
1465
 
    parser.add_option("-p", u"--port", type=u"int",
1466
 
                      help=u"Port number to receive requests on")
1467
 
    parser.add_option("--check", action=u"store_true",
1468
 
                      help=u"Run self-test")
1469
 
    parser.add_option("--debug", action=u"store_true",
1470
 
                      help=u"Debug mode; run in foreground and log to"
1471
 
                      u" terminal")
1472
 
    parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1473
 
                      u" priority string (see GnuTLS documentation)")
1474
 
    parser.add_option("--servicename", type=u"string",
1475
 
                      metavar=u"NAME", help=u"Zeroconf service name")
1476
 
    parser.add_option("--configdir", type=u"string",
1477
 
                      default=u"/etc/mandos", metavar=u"DIR",
1478
 
                      help=u"Directory to search for configuration"
1479
 
                      u" files")
1480
 
    parser.add_option("--no-dbus", action=u"store_false",
1481
 
                      dest=u"use_dbus", help=u"Do not provide D-Bus"
1482
 
                      u" system bus interface")
1483
 
    parser.add_option("--no-ipv6", action=u"store_false",
1484
 
                      dest=u"use_ipv6", help=u"Do not use IPv6")
1485
 
    options = parser.parse_args()[0]
1486
 
    
 
2808
 
 
2809
    parser = argparse.ArgumentParser()
 
2810
    parser.add_argument("-v", "--version", action="version",
 
2811
                        version="%(prog)s {}".format(version),
 
2812
                        help="show version number and exit")
 
2813
    parser.add_argument("-i", "--interface", metavar="IF",
 
2814
                        help="Bind to interface IF")
 
2815
    parser.add_argument("-a", "--address",
 
2816
                        help="Address to listen for requests on")
 
2817
    parser.add_argument("-p", "--port", type=int,
 
2818
                        help="Port number to receive requests on")
 
2819
    parser.add_argument("--check", action="store_true",
 
2820
                        help="Run self-test")
 
2821
    parser.add_argument("--debug", action="store_true",
 
2822
                        help="Debug mode; run in foreground and log"
 
2823
                        " to terminal", default=None)
 
2824
    parser.add_argument("--debuglevel", metavar="LEVEL",
 
2825
                        help="Debug level for stdout output")
 
2826
    parser.add_argument("--priority", help="GnuTLS"
 
2827
                        " priority string (see GnuTLS documentation)")
 
2828
    parser.add_argument("--servicename",
 
2829
                        metavar="NAME", help="Zeroconf service name")
 
2830
    parser.add_argument("--configdir",
 
2831
                        default="/etc/mandos", metavar="DIR",
 
2832
                        help="Directory to search for configuration"
 
2833
                        " files")
 
2834
    parser.add_argument("--no-dbus", action="store_false",
 
2835
                        dest="use_dbus", help="Do not provide D-Bus"
 
2836
                        " system bus interface", default=None)
 
2837
    parser.add_argument("--no-ipv6", action="store_false",
 
2838
                        dest="use_ipv6", help="Do not use IPv6",
 
2839
                        default=None)
 
2840
    parser.add_argument("--no-restore", action="store_false",
 
2841
                        dest="restore", help="Do not restore stored"
 
2842
                        " state", default=None)
 
2843
    parser.add_argument("--socket", type=int,
 
2844
                        help="Specify a file descriptor to a network"
 
2845
                        " socket to use instead of creating one")
 
2846
    parser.add_argument("--statedir", metavar="DIR",
 
2847
                        help="Directory to save/restore state in")
 
2848
    parser.add_argument("--foreground", action="store_true",
 
2849
                        help="Run in foreground", default=None)
 
2850
    parser.add_argument("--no-zeroconf", action="store_false",
 
2851
                        dest="zeroconf", help="Do not use Zeroconf",
 
2852
                        default=None)
 
2853
 
 
2854
    options = parser.parse_args()
 
2855
 
1487
2856
    if options.check:
1488
2857
        import doctest
1489
 
        doctest.testmod()
1490
 
        sys.exit()
1491
 
    
 
2858
        fail_count, test_count = doctest.testmod()
 
2859
        sys.exit(os.EX_OK if fail_count == 0 else 1)
 
2860
 
1492
2861
    # Default values for config file for server-global settings
1493
 
    server_defaults = { u"interface": u"",
1494
 
                        u"address": u"",
1495
 
                        u"port": u"",
1496
 
                        u"debug": u"False",
1497
 
                        u"priority":
1498
 
                        u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1499
 
                        u"servicename": u"Mandos",
1500
 
                        u"use_dbus": u"True",
1501
 
                        u"use_ipv6": u"True",
1502
 
                        }
1503
 
    
 
2862
    server_defaults = {"interface": "",
 
2863
                       "address": "",
 
2864
                       "port": "",
 
2865
                       "debug": "False",
 
2866
                       "priority":
 
2867
                       "SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
 
2868
                       ":+SIGN-DSA-SHA256",
 
2869
                       "servicename": "Mandos",
 
2870
                       "use_dbus": "True",
 
2871
                       "use_ipv6": "True",
 
2872
                       "debuglevel": "",
 
2873
                       "restore": "True",
 
2874
                       "socket": "",
 
2875
                       "statedir": "/var/lib/mandos",
 
2876
                       "foreground": "False",
 
2877
                       "zeroconf": "True",
 
2878
                       }
 
2879
 
1504
2880
    # Parse config file for server-global settings
1505
2881
    server_config = configparser.SafeConfigParser(server_defaults)
1506
2882
    del server_defaults
1507
 
    server_config.read(os.path.join(options.configdir,
1508
 
                                    u"mandos.conf"))
 
2883
    server_config.read(os.path.join(options.configdir, "mandos.conf"))
1509
2884
    # Convert the SafeConfigParser object to a dict
1510
2885
    server_settings = server_config.defaults()
1511
2886
    # Use the appropriate methods on the non-string config options
1512
 
    for option in (u"debug", u"use_dbus", u"use_ipv6"):
1513
 
        server_settings[option] = server_config.getboolean(u"DEFAULT",
 
2887
    for option in ("debug", "use_dbus", "use_ipv6", "restore",
 
2888
                   "foreground", "zeroconf"):
 
2889
        server_settings[option] = server_config.getboolean("DEFAULT",
1514
2890
                                                           option)
1515
2891
    if server_settings["port"]:
1516
 
        server_settings["port"] = server_config.getint(u"DEFAULT",
1517
 
                                                       u"port")
 
2892
        server_settings["port"] = server_config.getint("DEFAULT",
 
2893
                                                       "port")
 
2894
    if server_settings["socket"]:
 
2895
        server_settings["socket"] = server_config.getint("DEFAULT",
 
2896
                                                         "socket")
 
2897
        # Later, stdin will, and stdout and stderr might, be dup'ed
 
2898
        # over with an opened os.devnull.  But we don't want this to
 
2899
        # happen with a supplied network socket.
 
2900
        if 0 <= server_settings["socket"] <= 2:
 
2901
            server_settings["socket"] = os.dup(server_settings
 
2902
                                               ["socket"])
1518
2903
    del server_config
1519
 
    
 
2904
 
1520
2905
    # Override the settings from the config file with command line
1521
2906
    # options, if set.
1522
 
    for option in (u"interface", u"address", u"port", u"debug",
1523
 
                   u"priority", u"servicename", u"configdir",
1524
 
                   u"use_dbus", u"use_ipv6"):
 
2907
    for option in ("interface", "address", "port", "debug",
 
2908
                   "priority", "servicename", "configdir", "use_dbus",
 
2909
                   "use_ipv6", "debuglevel", "restore", "statedir",
 
2910
                   "socket", "foreground", "zeroconf"):
1525
2911
        value = getattr(options, option)
1526
2912
        if value is not None:
1527
2913
            server_settings[option] = value
1528
2914
    del options
1529
2915
    # Force all strings to be unicode
1530
2916
    for option in server_settings.keys():
1531
 
        if type(server_settings[option]) is str:
1532
 
            server_settings[option] = unicode(server_settings[option])
 
2917
        if isinstance(server_settings[option], bytes):
 
2918
            server_settings[option] = (server_settings[option]
 
2919
                                       .decode("utf-8"))
 
2920
    # Force all boolean options to be boolean
 
2921
    for option in ("debug", "use_dbus", "use_ipv6", "restore",
 
2922
                   "foreground", "zeroconf"):
 
2923
        server_settings[option] = bool(server_settings[option])
 
2924
    # Debug implies foreground
 
2925
    if server_settings["debug"]:
 
2926
        server_settings["foreground"] = True
1533
2927
    # Now we have our good server settings in "server_settings"
1534
 
    
 
2928
 
1535
2929
    ##################################################################
1536
 
    
 
2930
 
 
2931
    if (not server_settings["zeroconf"]
 
2932
        and not (server_settings["port"]
 
2933
                 or server_settings["socket"] != "")):
 
2934
        parser.error("Needs port or socket to work without Zeroconf")
 
2935
 
1537
2936
    # For convenience
1538
 
    debug = server_settings[u"debug"]
1539
 
    use_dbus = server_settings[u"use_dbus"]
1540
 
    use_ipv6 = server_settings[u"use_ipv6"]
1541
 
    
1542
 
    if not debug:
1543
 
        syslogger.setLevel(logging.WARNING)
1544
 
        console.setLevel(logging.WARNING)
1545
 
    
1546
 
    if server_settings[u"servicename"] != u"Mandos":
1547
 
        syslogger.setFormatter(logging.Formatter
1548
 
                               (u'Mandos (%s) [%%(process)d]:'
1549
 
                                u' %%(levelname)s: %%(message)s'
1550
 
                                % server_settings[u"servicename"]))
1551
 
    
 
2937
    debug = server_settings["debug"]
 
2938
    debuglevel = server_settings["debuglevel"]
 
2939
    use_dbus = server_settings["use_dbus"]
 
2940
    use_ipv6 = server_settings["use_ipv6"]
 
2941
    stored_state_path = os.path.join(server_settings["statedir"],
 
2942
                                     stored_state_file)
 
2943
    foreground = server_settings["foreground"]
 
2944
    zeroconf = server_settings["zeroconf"]
 
2945
 
 
2946
    if debug:
 
2947
        initlogger(debug, logging.DEBUG)
 
2948
    else:
 
2949
        if not debuglevel:
 
2950
            initlogger(debug)
 
2951
        else:
 
2952
            level = getattr(logging, debuglevel.upper())
 
2953
            initlogger(debug, level)
 
2954
 
 
2955
    if server_settings["servicename"] != "Mandos":
 
2956
        syslogger.setFormatter(
 
2957
            logging.Formatter('Mandos ({}) [%(process)d]:'
 
2958
                              ' %(levelname)s: %(message)s'.format(
 
2959
                                  server_settings["servicename"])))
 
2960
 
1552
2961
    # Parse config file with clients
1553
 
    client_defaults = { u"timeout": u"1h",
1554
 
                        u"interval": u"5m",
1555
 
                        u"checker": u"fping -q -- %%(host)s",
1556
 
                        u"host": u"",
1557
 
                        }
1558
 
    client_config = configparser.SafeConfigParser(client_defaults)
1559
 
    client_config.read(os.path.join(server_settings[u"configdir"],
1560
 
                                    u"clients.conf"))
1561
 
    
 
2962
    client_config = configparser.SafeConfigParser(Client
 
2963
                                                  .client_defaults)
 
2964
    client_config.read(os.path.join(server_settings["configdir"],
 
2965
                                    "clients.conf"))
 
2966
 
1562
2967
    global mandos_dbus_service
1563
2968
    mandos_dbus_service = None
1564
 
    
1565
 
    tcp_server = MandosServer((server_settings[u"address"],
1566
 
                               server_settings[u"port"]),
1567
 
                              ClientHandler,
1568
 
                              interface=server_settings[u"interface"],
1569
 
                              use_ipv6=use_ipv6,
1570
 
                              gnutls_priority=
1571
 
                              server_settings[u"priority"],
1572
 
                              use_dbus=use_dbus)
1573
 
    pidfilename = u"/var/run/mandos.pid"
1574
 
    try:
1575
 
        pidfile = open(pidfilename, u"w")
1576
 
    except IOError:
1577
 
        logger.error(u"Could not open file %r", pidfilename)
1578
 
    
1579
 
    try:
1580
 
        uid = pwd.getpwnam(u"_mandos").pw_uid
1581
 
        gid = pwd.getpwnam(u"_mandos").pw_gid
1582
 
    except KeyError:
1583
 
        try:
1584
 
            uid = pwd.getpwnam(u"mandos").pw_uid
1585
 
            gid = pwd.getpwnam(u"mandos").pw_gid
 
2969
 
 
2970
    socketfd = None
 
2971
    if server_settings["socket"] != "":
 
2972
        socketfd = server_settings["socket"]
 
2973
    tcp_server = MandosServer(
 
2974
        (server_settings["address"], server_settings["port"]),
 
2975
        ClientHandler,
 
2976
        interface=(server_settings["interface"] or None),
 
2977
        use_ipv6=use_ipv6,
 
2978
        gnutls_priority=server_settings["priority"],
 
2979
        use_dbus=use_dbus,
 
2980
        socketfd=socketfd)
 
2981
    if not foreground:
 
2982
        pidfilename = "/run/mandos.pid"
 
2983
        if not os.path.isdir("/run/."):
 
2984
            pidfilename = "/var/run/mandos.pid"
 
2985
        pidfile = None
 
2986
        try:
 
2987
            pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
 
2988
        except IOError as e:
 
2989
            logger.error("Could not open file %r", pidfilename,
 
2990
                         exc_info=e)
 
2991
 
 
2992
    for name, group in (("_mandos", "_mandos"),
 
2993
                        ("mandos", "mandos"),
 
2994
                        ("nobody", "nogroup")):
 
2995
        try:
 
2996
            uid = pwd.getpwnam(name).pw_uid
 
2997
            gid = pwd.getpwnam(group).pw_gid
 
2998
            break
1586
2999
        except KeyError:
1587
 
            try:
1588
 
                uid = pwd.getpwnam(u"nobody").pw_uid
1589
 
                gid = pwd.getpwnam(u"nobody").pw_gid
1590
 
            except KeyError:
1591
 
                uid = 65534
1592
 
                gid = 65534
 
3000
            continue
 
3001
    else:
 
3002
        uid = 65534
 
3003
        gid = 65534
1593
3004
    try:
1594
3005
        os.setgid(gid)
1595
3006
        os.setuid(uid)
1596
 
    except OSError, error:
1597
 
        if error[0] != errno.EPERM:
1598
 
            raise error
1599
 
    
1600
 
    # Enable all possible GnuTLS debugging
 
3007
        if debug:
 
3008
            logger.debug("Did setuid/setgid to {}:{}".format(uid,
 
3009
                                                             gid))
 
3010
    except OSError as error:
 
3011
        logger.warning("Failed to setuid/setgid to {}:{}: {}"
 
3012
                       .format(uid, gid, os.strerror(error.errno)))
 
3013
        if error.errno != errno.EPERM:
 
3014
            raise
 
3015
 
1601
3016
    if debug:
 
3017
        # Enable all possible GnuTLS debugging
 
3018
 
1602
3019
        # "Use a log level over 10 to enable all debugging options."
1603
3020
        # - GnuTLS manual
1604
 
        gnutls.library.functions.gnutls_global_set_log_level(11)
1605
 
        
1606
 
        @gnutls.library.types.gnutls_log_func
 
3021
        gnutls.global_set_log_level(11)
 
3022
 
 
3023
        @gnutls.log_func
1607
3024
        def debug_gnutls(level, string):
1608
 
            logger.debug(u"GnuTLS: %s", string[:-1])
1609
 
        
1610
 
        (gnutls.library.functions
1611
 
         .gnutls_global_set_log_function(debug_gnutls))
1612
 
    
 
3025
            logger.debug("GnuTLS: %s", string[:-1])
 
3026
 
 
3027
        gnutls.global_set_log_function(debug_gnutls)
 
3028
 
 
3029
        # Redirect stdin so all checkers get /dev/null
 
3030
        null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
 
3031
        os.dup2(null, sys.stdin.fileno())
 
3032
        if null > 2:
 
3033
            os.close(null)
 
3034
 
 
3035
    # Need to fork before connecting to D-Bus
 
3036
    if not foreground:
 
3037
        # Close all input and output, do double fork, etc.
 
3038
        daemon()
 
3039
 
 
3040
    # multiprocessing will use threads, so before we use GLib we need
 
3041
    # to inform GLib that threads will be used.
 
3042
    GLib.threads_init()
 
3043
 
1613
3044
    global main_loop
1614
3045
    # From the Avahi example code
1615
 
    DBusGMainLoop(set_as_default=True )
1616
 
    main_loop = gobject.MainLoop()
 
3046
    DBusGMainLoop(set_as_default=True)
 
3047
    main_loop = GLib.MainLoop()
1617
3048
    bus = dbus.SystemBus()
1618
3049
    # End of Avahi example code
1619
3050
    if use_dbus:
1620
3051
        try:
1621
 
            bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1622
 
                                            bus, do_not_queue=True)
1623
 
        except dbus.exceptions.NameExistsException, e:
1624
 
            logger.error(unicode(e) + u", disabling D-Bus")
 
3052
            bus_name = dbus.service.BusName("se.recompile.Mandos",
 
3053
                                            bus,
 
3054
                                            do_not_queue=True)
 
3055
            old_bus_name = dbus.service.BusName(
 
3056
                "se.bsnet.fukt.Mandos", bus,
 
3057
                do_not_queue=True)
 
3058
        except dbus.exceptions.DBusException as e:
 
3059
            logger.error("Disabling D-Bus:", exc_info=e)
1625
3060
            use_dbus = False
1626
 
            server_settings[u"use_dbus"] = False
 
3061
            server_settings["use_dbus"] = False
1627
3062
            tcp_server.use_dbus = False
1628
 
    protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1629
 
    service = AvahiService(name = server_settings[u"servicename"],
1630
 
                           servicetype = u"_mandos._tcp",
1631
 
                           protocol = protocol, bus = bus)
1632
 
    if server_settings["interface"]:
1633
 
        service.interface = (if_nametoindex
1634
 
                             (str(server_settings[u"interface"])))
1635
 
    
 
3063
    if zeroconf:
 
3064
        protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
 
3065
        service = AvahiServiceToSyslog(
 
3066
            name=server_settings["servicename"],
 
3067
            servicetype="_mandos._tcp",
 
3068
            protocol=protocol,
 
3069
            bus=bus)
 
3070
        if server_settings["interface"]:
 
3071
            service.interface = if_nametoindex(
 
3072
                server_settings["interface"].encode("utf-8"))
 
3073
 
 
3074
    global multiprocessing_manager
 
3075
    multiprocessing_manager = multiprocessing.Manager()
 
3076
 
1636
3077
    client_class = Client
1637
3078
    if use_dbus:
1638
 
        client_class = functools.partial(ClientDBus, bus = bus)
1639
 
    tcp_server.clients.update(set(
1640
 
            client_class(name = section,
1641
 
                         config= dict(client_config.items(section)))
1642
 
            for section in client_config.sections()))
 
3079
        client_class = functools.partial(ClientDBus, bus=bus)
 
3080
 
 
3081
    client_settings = Client.config_parser(client_config)
 
3082
    old_client_settings = {}
 
3083
    clients_data = {}
 
3084
 
 
3085
    # This is used to redirect stdout and stderr for checker processes
 
3086
    global wnull
 
3087
    wnull = open(os.devnull, "w")  # A writable /dev/null
 
3088
    # Only used if server is running in foreground but not in debug
 
3089
    # mode
 
3090
    if debug or not foreground:
 
3091
        wnull.close()
 
3092
 
 
3093
    # Get client data and settings from last running state.
 
3094
    if server_settings["restore"]:
 
3095
        try:
 
3096
            with open(stored_state_path, "rb") as stored_state:
 
3097
                if sys.version_info.major == 2:
 
3098
                    clients_data, old_client_settings = pickle.load(
 
3099
                        stored_state)
 
3100
                else:
 
3101
                    bytes_clients_data, bytes_old_client_settings = (
 
3102
                        pickle.load(stored_state, encoding="bytes"))
 
3103
                    #   Fix bytes to strings
 
3104
                    #  clients_data
 
3105
                    # .keys()
 
3106
                    clients_data = {(key.decode("utf-8")
 
3107
                                     if isinstance(key, bytes)
 
3108
                                     else key): value
 
3109
                                    for key, value in
 
3110
                                    bytes_clients_data.items()}
 
3111
                    del bytes_clients_data
 
3112
                    for key in clients_data:
 
3113
                        value = {(k.decode("utf-8")
 
3114
                                  if isinstance(k, bytes) else k): v
 
3115
                                 for k, v in
 
3116
                                 clients_data[key].items()}
 
3117
                        clients_data[key] = value
 
3118
                        # .client_structure
 
3119
                        value["client_structure"] = [
 
3120
                            (s.decode("utf-8")
 
3121
                             if isinstance(s, bytes)
 
3122
                             else s) for s in
 
3123
                            value["client_structure"]]
 
3124
                        # .name & .host
 
3125
                        for k in ("name", "host"):
 
3126
                            if isinstance(value[k], bytes):
 
3127
                                value[k] = value[k].decode("utf-8")
 
3128
                    #  old_client_settings
 
3129
                    # .keys()
 
3130
                    old_client_settings = {
 
3131
                        (key.decode("utf-8")
 
3132
                         if isinstance(key, bytes)
 
3133
                         else key): value
 
3134
                        for key, value in
 
3135
                        bytes_old_client_settings.items()}
 
3136
                    del bytes_old_client_settings
 
3137
                    # .host
 
3138
                    for value in old_client_settings.values():
 
3139
                        if isinstance(value["host"], bytes):
 
3140
                            value["host"] = (value["host"]
 
3141
                                             .decode("utf-8"))
 
3142
            os.remove(stored_state_path)
 
3143
        except IOError as e:
 
3144
            if e.errno == errno.ENOENT:
 
3145
                logger.warning("Could not load persistent state:"
 
3146
                               " {}".format(os.strerror(e.errno)))
 
3147
            else:
 
3148
                logger.critical("Could not load persistent state:",
 
3149
                                exc_info=e)
 
3150
                raise
 
3151
        except EOFError as e:
 
3152
            logger.warning("Could not load persistent state: "
 
3153
                           "EOFError:",
 
3154
                           exc_info=e)
 
3155
 
 
3156
    with PGPEngine() as pgp:
 
3157
        for client_name, client in clients_data.items():
 
3158
            # Skip removed clients
 
3159
            if client_name not in client_settings:
 
3160
                continue
 
3161
 
 
3162
            # Decide which value to use after restoring saved state.
 
3163
            # We have three different values: Old config file,
 
3164
            # new config file, and saved state.
 
3165
            # New config value takes precedence if it differs from old
 
3166
            # config value, otherwise use saved state.
 
3167
            for name, value in client_settings[client_name].items():
 
3168
                try:
 
3169
                    # For each value in new config, check if it
 
3170
                    # differs from the old config value (Except for
 
3171
                    # the "secret" attribute)
 
3172
                    if (name != "secret"
 
3173
                        and (value !=
 
3174
                             old_client_settings[client_name][name])):
 
3175
                        client[name] = value
 
3176
                except KeyError:
 
3177
                    pass
 
3178
 
 
3179
            # Clients who has passed its expire date can still be
 
3180
            # enabled if its last checker was successful.  A Client
 
3181
            # whose checker succeeded before we stored its state is
 
3182
            # assumed to have successfully run all checkers during
 
3183
            # downtime.
 
3184
            if client["enabled"]:
 
3185
                if datetime.datetime.utcnow() >= client["expires"]:
 
3186
                    if not client["last_checked_ok"]:
 
3187
                        logger.warning(
 
3188
                            "disabling client {} - Client never "
 
3189
                            "performed a successful checker".format(
 
3190
                                client_name))
 
3191
                        client["enabled"] = False
 
3192
                    elif client["last_checker_status"] != 0:
 
3193
                        logger.warning(
 
3194
                            "disabling client {} - Client last"
 
3195
                            " checker failed with error code"
 
3196
                            " {}".format(
 
3197
                                client_name,
 
3198
                                client["last_checker_status"]))
 
3199
                        client["enabled"] = False
 
3200
                    else:
 
3201
                        client["expires"] = (
 
3202
                            datetime.datetime.utcnow()
 
3203
                            + client["timeout"])
 
3204
                        logger.debug("Last checker succeeded,"
 
3205
                                     " keeping {} enabled".format(
 
3206
                                         client_name))
 
3207
            try:
 
3208
                client["secret"] = pgp.decrypt(
 
3209
                    client["encrypted_secret"],
 
3210
                    client_settings[client_name]["secret"])
 
3211
            except PGPError:
 
3212
                # If decryption fails, we use secret from new settings
 
3213
                logger.debug("Failed to decrypt {} old secret".format(
 
3214
                    client_name))
 
3215
                client["secret"] = (client_settings[client_name]
 
3216
                                    ["secret"])
 
3217
 
 
3218
    # Add/remove clients based on new changes made to config
 
3219
    for client_name in (set(old_client_settings)
 
3220
                        - set(client_settings)):
 
3221
        del clients_data[client_name]
 
3222
    for client_name in (set(client_settings)
 
3223
                        - set(old_client_settings)):
 
3224
        clients_data[client_name] = client_settings[client_name]
 
3225
 
 
3226
    # Create all client objects
 
3227
    for client_name, client in clients_data.items():
 
3228
        tcp_server.clients[client_name] = client_class(
 
3229
            name=client_name,
 
3230
            settings=client,
 
3231
            server_settings=server_settings)
 
3232
 
1643
3233
    if not tcp_server.clients:
1644
 
        logger.warning(u"No clients defined")
1645
 
    
1646
 
    if debug:
1647
 
        # Redirect stdin so all checkers get /dev/null
1648
 
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1649
 
        os.dup2(null, sys.stdin.fileno())
1650
 
        if null > 2:
1651
 
            os.close(null)
1652
 
    else:
1653
 
        # No console logging
1654
 
        logger.removeHandler(console)
1655
 
        # Close all input and output, do double fork, etc.
1656
 
        daemon()
1657
 
    
1658
 
    try:
1659
 
        with pidfile:
 
3234
        logger.warning("No clients defined")
 
3235
 
 
3236
    if not foreground:
 
3237
        if pidfile is not None:
1660
3238
            pid = os.getpid()
1661
 
            pidfile.write(str(pid) + "\n")
 
3239
            try:
 
3240
                with pidfile:
 
3241
                    print(pid, file=pidfile)
 
3242
            except IOError:
 
3243
                logger.error("Could not write to file %r with PID %d",
 
3244
                             pidfilename, pid)
1662
3245
        del pidfile
1663
 
    except IOError:
1664
 
        logger.error(u"Could not write to file %r with PID %d",
1665
 
                     pidfilename, pid)
1666
 
    except NameError:
1667
 
        # "pidfile" was never created
1668
 
        pass
1669
 
    del pidfilename
1670
 
    
1671
 
    if not debug:
1672
 
        signal.signal(signal.SIGINT, signal.SIG_IGN)
1673
 
    signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1674
 
    signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1675
 
    
 
3246
        del pidfilename
 
3247
 
 
3248
    for termsig in (signal.SIGHUP, signal.SIGTERM):
 
3249
        GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
 
3250
                             lambda: main_loop.quit() and False)
 
3251
 
1676
3252
    if use_dbus:
1677
 
        class MandosDBusService(dbus.service.Object):
 
3253
 
 
3254
        @alternate_dbus_interfaces(
 
3255
            {"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
 
3256
        class MandosDBusService(DBusObjectWithObjectManager):
1678
3257
            """A D-Bus proxy object"""
 
3258
 
1679
3259
            def __init__(self):
1680
 
                dbus.service.Object.__init__(self, bus, u"/")
1681
 
            _interface = u"se.bsnet.fukt.Mandos"
1682
 
            
1683
 
            @dbus.service.signal(_interface, signature=u"o")
 
3260
                dbus.service.Object.__init__(self, bus, "/")
 
3261
 
 
3262
            _interface = "se.recompile.Mandos"
 
3263
 
 
3264
            @dbus.service.signal(_interface, signature="o")
1684
3265
            def ClientAdded(self, objpath):
1685
3266
                "D-Bus signal"
1686
3267
                pass
1687
 
            
1688
 
            @dbus.service.signal(_interface, signature=u"ss")
 
3268
 
 
3269
            @dbus.service.signal(_interface, signature="ss")
1689
3270
            def ClientNotFound(self, fingerprint, address):
1690
3271
                "D-Bus signal"
1691
3272
                pass
1692
 
            
1693
 
            @dbus.service.signal(_interface, signature=u"os")
 
3273
 
 
3274
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
 
3275
                               "true"})
 
3276
            @dbus.service.signal(_interface, signature="os")
1694
3277
            def ClientRemoved(self, objpath, name):
1695
3278
                "D-Bus signal"
1696
3279
                pass
1697
 
            
1698
 
            @dbus.service.method(_interface, out_signature=u"ao")
 
3280
 
 
3281
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
 
3282
                               "true"})
 
3283
            @dbus.service.method(_interface, out_signature="ao")
1699
3284
            def GetAllClients(self):
1700
3285
                "D-Bus method"
1701
 
                return dbus.Array(c.dbus_object_path
1702
 
                                  for c in tcp_server.clients)
1703
 
            
 
3286
                return dbus.Array(c.dbus_object_path for c in
 
3287
                                  tcp_server.clients.values())
 
3288
 
 
3289
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
 
3290
                               "true"})
1704
3291
            @dbus.service.method(_interface,
1705
 
                                 out_signature=u"a{oa{sv}}")
 
3292
                                 out_signature="a{oa{sv}}")
1706
3293
            def GetAllClientsWithProperties(self):
1707
3294
                "D-Bus method"
1708
3295
                return dbus.Dictionary(
1709
 
                    ((c.dbus_object_path, c.GetAll(u""))
1710
 
                     for c in tcp_server.clients),
1711
 
                    signature=u"oa{sv}")
1712
 
            
1713
 
            @dbus.service.method(_interface, in_signature=u"o")
 
3296
                    {c.dbus_object_path: c.GetAll(
 
3297
                        "se.recompile.Mandos.Client")
 
3298
                     for c in tcp_server.clients.values()},
 
3299
                    signature="oa{sv}")
 
3300
 
 
3301
            @dbus.service.method(_interface, in_signature="o")
1714
3302
            def RemoveClient(self, object_path):
1715
3303
                "D-Bus method"
1716
 
                for c in tcp_server.clients:
 
3304
                for c in tcp_server.clients.values():
1717
3305
                    if c.dbus_object_path == object_path:
1718
 
                        tcp_server.clients.remove(c)
 
3306
                        del tcp_server.clients[c.name]
1719
3307
                        c.remove_from_connection()
1720
 
                        # Don't signal anything except ClientRemoved
 
3308
                        # Don't signal the disabling
1721
3309
                        c.disable(quiet=True)
1722
 
                        # Emit D-Bus signal
1723
 
                        self.ClientRemoved(object_path, c.name)
 
3310
                        # Emit D-Bus signal for removal
 
3311
                        self.client_removed_signal(c)
1724
3312
                        return
1725
3313
                raise KeyError(object_path)
1726
 
            
 
3314
 
1727
3315
            del _interface
1728
 
        
 
3316
 
 
3317
            @dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
 
3318
                                 out_signature="a{oa{sa{sv}}}")
 
3319
            def GetManagedObjects(self):
 
3320
                """D-Bus method"""
 
3321
                return dbus.Dictionary(
 
3322
                    {client.dbus_object_path:
 
3323
                     dbus.Dictionary(
 
3324
                         {interface: client.GetAll(interface)
 
3325
                          for interface in
 
3326
                          client._get_all_interface_names()})
 
3327
                     for client in tcp_server.clients.values()})
 
3328
 
 
3329
            def client_added_signal(self, client):
 
3330
                """Send the new standard signal and the old signal"""
 
3331
                if use_dbus:
 
3332
                    # New standard signal
 
3333
                    self.InterfacesAdded(
 
3334
                        client.dbus_object_path,
 
3335
                        dbus.Dictionary(
 
3336
                            {interface: client.GetAll(interface)
 
3337
                             for interface in
 
3338
                             client._get_all_interface_names()}))
 
3339
                    # Old signal
 
3340
                    self.ClientAdded(client.dbus_object_path)
 
3341
 
 
3342
            def client_removed_signal(self, client):
 
3343
                """Send the new standard signal and the old signal"""
 
3344
                if use_dbus:
 
3345
                    # New standard signal
 
3346
                    self.InterfacesRemoved(
 
3347
                        client.dbus_object_path,
 
3348
                        client._get_all_interface_names())
 
3349
                    # Old signal
 
3350
                    self.ClientRemoved(client.dbus_object_path,
 
3351
                                       client.name)
 
3352
 
1729
3353
        mandos_dbus_service = MandosDBusService()
1730
 
    
 
3354
 
 
3355
    # Save modules to variables to exempt the modules from being
 
3356
    # unloaded before the function registered with atexit() is run.
 
3357
    mp = multiprocessing
 
3358
    wn = wnull
 
3359
 
1731
3360
    def cleanup():
1732
3361
        "Cleanup function; run on exit"
1733
 
        service.cleanup()
1734
 
        
 
3362
        if zeroconf:
 
3363
            service.cleanup()
 
3364
 
 
3365
        mp.active_children()
 
3366
        wn.close()
 
3367
        if not (tcp_server.clients or client_settings):
 
3368
            return
 
3369
 
 
3370
        # Store client before exiting. Secrets are encrypted with key
 
3371
        # based on what config file has. If config file is
 
3372
        # removed/edited, old secret will thus be unrecovable.
 
3373
        clients = {}
 
3374
        with PGPEngine() as pgp:
 
3375
            for client in tcp_server.clients.values():
 
3376
                key = client_settings[client.name]["secret"]
 
3377
                client.encrypted_secret = pgp.encrypt(client.secret,
 
3378
                                                      key)
 
3379
                client_dict = {}
 
3380
 
 
3381
                # A list of attributes that can not be pickled
 
3382
                # + secret.
 
3383
                exclude = {"bus", "changedstate", "secret",
 
3384
                           "checker", "server_settings"}
 
3385
                for name, typ in inspect.getmembers(dbus.service
 
3386
                                                    .Object):
 
3387
                    exclude.add(name)
 
3388
 
 
3389
                client_dict["encrypted_secret"] = (client
 
3390
                                                   .encrypted_secret)
 
3391
                for attr in client.client_structure:
 
3392
                    if attr not in exclude:
 
3393
                        client_dict[attr] = getattr(client, attr)
 
3394
 
 
3395
                clients[client.name] = client_dict
 
3396
                del client_settings[client.name]["secret"]
 
3397
 
 
3398
        try:
 
3399
            with tempfile.NamedTemporaryFile(
 
3400
                    mode='wb',
 
3401
                    suffix=".pickle",
 
3402
                    prefix='clients-',
 
3403
                    dir=os.path.dirname(stored_state_path),
 
3404
                    delete=False) as stored_state:
 
3405
                pickle.dump((clients, client_settings), stored_state,
 
3406
                            protocol=2)
 
3407
                tempname = stored_state.name
 
3408
            os.rename(tempname, stored_state_path)
 
3409
        except (IOError, OSError) as e:
 
3410
            if not debug:
 
3411
                try:
 
3412
                    os.remove(tempname)
 
3413
                except NameError:
 
3414
                    pass
 
3415
            if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
 
3416
                logger.warning("Could not save persistent state: {}"
 
3417
                               .format(os.strerror(e.errno)))
 
3418
            else:
 
3419
                logger.warning("Could not save persistent state:",
 
3420
                               exc_info=e)
 
3421
                raise
 
3422
 
 
3423
        # Delete all clients, and settings from config
1735
3424
        while tcp_server.clients:
1736
 
            client = tcp_server.clients.pop()
 
3425
            name, client = tcp_server.clients.popitem()
1737
3426
            if use_dbus:
1738
3427
                client.remove_from_connection()
1739
 
            client.disable_hook = None
1740
 
            # Don't signal anything except ClientRemoved
 
3428
            # Don't signal the disabling
1741
3429
            client.disable(quiet=True)
 
3430
            # Emit D-Bus signal for removal
1742
3431
            if use_dbus:
1743
 
                # Emit D-Bus signal
1744
 
                mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1745
 
                                                  client.name)
1746
 
    
 
3432
                mandos_dbus_service.client_removed_signal(client)
 
3433
        client_settings.clear()
 
3434
 
1747
3435
    atexit.register(cleanup)
1748
 
    
1749
 
    for client in tcp_server.clients:
 
3436
 
 
3437
    for client in tcp_server.clients.values():
1750
3438
        if use_dbus:
1751
 
            # Emit D-Bus signal
1752
 
            mandos_dbus_service.ClientAdded(client.dbus_object_path)
1753
 
        client.enable()
1754
 
    
 
3439
            # Emit D-Bus signal for adding
 
3440
            mandos_dbus_service.client_added_signal(client)
 
3441
        # Need to initiate checking of clients
 
3442
        if client.enabled:
 
3443
            client.init_checker()
 
3444
 
1755
3445
    tcp_server.enable()
1756
3446
    tcp_server.server_activate()
1757
 
    
 
3447
 
1758
3448
    # Find out what port we got
1759
 
    service.port = tcp_server.socket.getsockname()[1]
 
3449
    if zeroconf:
 
3450
        service.port = tcp_server.socket.getsockname()[1]
1760
3451
    if use_ipv6:
1761
 
        logger.info(u"Now listening on address %r, port %d,"
1762
 
                    " flowinfo %d, scope_id %d"
1763
 
                    % tcp_server.socket.getsockname())
 
3452
        logger.info("Now listening on address %r, port %d,"
 
3453
                    " flowinfo %d, scope_id %d",
 
3454
                    *tcp_server.socket.getsockname())
1764
3455
    else:                       # IPv4
1765
 
        logger.info(u"Now listening on address %r, port %d"
1766
 
                    % tcp_server.socket.getsockname())
1767
 
    
1768
 
    #service.interface = tcp_server.socket.getsockname()[3]
1769
 
    
 
3456
        logger.info("Now listening on address %r, port %d",
 
3457
                    *tcp_server.socket.getsockname())
 
3458
 
 
3459
    # service.interface = tcp_server.socket.getsockname()[3]
 
3460
 
1770
3461
    try:
1771
 
        # From the Avahi example code
1772
 
        try:
1773
 
            service.activate()
1774
 
        except dbus.exceptions.DBusException, error:
1775
 
            logger.critical(u"DBusException: %s", error)
1776
 
            cleanup()
1777
 
            sys.exit(1)
1778
 
        # End of Avahi example code
1779
 
        
1780
 
        gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1781
 
                             lambda *args, **kwargs:
1782
 
                             (tcp_server.handle_request
1783
 
                              (*args[2:], **kwargs) or True))
1784
 
        
1785
 
        logger.debug(u"Starting main loop")
 
3462
        if zeroconf:
 
3463
            # From the Avahi example code
 
3464
            try:
 
3465
                service.activate()
 
3466
            except dbus.exceptions.DBusException as error:
 
3467
                logger.critical("D-Bus Exception", exc_info=error)
 
3468
                cleanup()
 
3469
                sys.exit(1)
 
3470
            # End of Avahi example code
 
3471
 
 
3472
        GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
 
3473
                          lambda *args, **kwargs:
 
3474
                          (tcp_server.handle_request
 
3475
                           (*args[2:], **kwargs) or True))
 
3476
 
 
3477
        logger.debug("Starting main loop")
1786
3478
        main_loop.run()
1787
 
    except AvahiError, error:
1788
 
        logger.critical(u"AvahiError: %s", error)
 
3479
    except AvahiError as error:
 
3480
        logger.critical("Avahi Error", exc_info=error)
1789
3481
        cleanup()
1790
3482
        sys.exit(1)
1791
3483
    except KeyboardInterrupt:
1792
3484
        if debug:
1793
 
            print >> sys.stderr
1794
 
        logger.debug(u"Server received KeyboardInterrupt")
1795
 
    logger.debug(u"Server exiting")
 
3485
            print("", file=sys.stderr)
 
3486
        logger.debug("Server received KeyboardInterrupt")
 
3487
    logger.debug("Server exiting")
1796
3488
    # Must run before the D-Bus bus name gets deregistered
1797
3489
    cleanup()
1798
3490
 
 
3491
 
1799
3492
if __name__ == '__main__':
1800
3493
    main()