/mandos/trunk

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  • Committer: Teddy Hogeborn
  • Date: 2010-09-12 03:00:40 UTC
  • Revision ID: teddy@fukt.bsnet.se-20100912030040-b0uopyennste9fdh
Documentation changes:

* DBUS-API: New file documenting the server D-Bus interface.

* clients.conf: Add examples of new approval settings.

* debian/mandos.docs: Added "DBUS-API".

* mandos-clients.conf.xml (OPTIONS): Added "approved_by_default",
                                     "approval_delay", and
                                     "approval_duration".
* mandos.xml (D-BUS INTERFACE): Refer to the "DBUS-API" file.
  (BUGS): Remove mention of lack of a remote query interface.

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removed removed

Lines of Context:
11
11
# "AvahiService" class, and some lines in "main".
12
12
13
13
# Everything else is
14
 
# Copyright © 2008-2016 Teddy Hogeborn
15
 
# Copyright © 2008-2016 Björn Påhlsson
 
14
# Copyright © 2008,2009 Teddy Hogeborn
 
15
# Copyright © 2008,2009 Björn Påhlsson
16
16
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
28
# along with this program.  If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
31
 
# Contact the authors at <mandos@recompile.se>.
 
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
33
33
 
34
 
from __future__ import (division, absolute_import, print_function,
35
 
                        unicode_literals)
36
 
 
37
 
try:
38
 
    from future_builtins import *
39
 
except ImportError:
40
 
    pass
41
 
 
42
 
try:
43
 
    import SocketServer as socketserver
44
 
except ImportError:
45
 
    import socketserver
 
34
from __future__ import division, with_statement, absolute_import
 
35
 
 
36
import SocketServer as socketserver
46
37
import socket
47
 
import argparse
 
38
import optparse
48
39
import datetime
49
40
import errno
50
 
try:
51
 
    import ConfigParser as configparser
52
 
except ImportError:
53
 
    import configparser
 
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
54
48
import sys
55
49
import re
56
50
import os
65
59
import struct
66
60
import fcntl
67
61
import functools
68
 
try:
69
 
    import cPickle as pickle
70
 
except ImportError:
71
 
    import pickle
 
62
import cPickle as pickle
72
63
import multiprocessing
73
 
import types
74
 
import binascii
75
 
import tempfile
76
 
import itertools
77
 
import collections
78
 
import codecs
79
64
 
80
65
import dbus
81
66
import dbus.service
82
 
from gi.repository import GLib
 
67
import gobject
 
68
import avahi
83
69
from dbus.mainloop.glib import DBusGMainLoop
84
70
import ctypes
85
71
import ctypes.util
86
72
import xml.dom.minidom
87
73
import inspect
88
74
 
89
 
# Try to find the value of SO_BINDTODEVICE:
90
75
try:
91
 
    # This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
92
 
    # newer, and it is also the most natural place for it:
93
76
    SO_BINDTODEVICE = socket.SO_BINDTODEVICE
94
77
except AttributeError:
95
78
    try:
96
 
        # This is where SO_BINDTODEVICE was up to and including Python
97
 
        # 2.6, and also 3.2:
98
79
        from IN import SO_BINDTODEVICE
99
80
    except ImportError:
100
 
        # In Python 2.7 it seems to have been removed entirely.
101
 
        # Try running the C preprocessor:
102
 
        try:
103
 
            cc = subprocess.Popen(["cc", "--language=c", "-E",
104
 
                                   "/dev/stdin"],
105
 
                                  stdin=subprocess.PIPE,
106
 
                                  stdout=subprocess.PIPE)
107
 
            stdout = cc.communicate(
108
 
                "#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
109
 
            SO_BINDTODEVICE = int(stdout.splitlines()[-1])
110
 
        except (OSError, ValueError, IndexError):
111
 
            # No value found
112
 
            SO_BINDTODEVICE = None
113
 
 
114
 
if sys.version_info.major == 2:
115
 
    str = unicode
116
 
 
117
 
version = "1.7.9"
118
 
stored_state_file = "clients.pickle"
119
 
 
120
 
logger = logging.getLogger()
121
 
syslogger = None
122
 
 
123
 
try:
124
 
    if_nametoindex = ctypes.cdll.LoadLibrary(
125
 
        ctypes.util.find_library("c")).if_nametoindex
126
 
except (OSError, AttributeError):
127
 
    
128
 
    def if_nametoindex(interface):
129
 
        "Get an interface index the hard way, i.e. using fcntl()"
130
 
        SIOCGIFINDEX = 0x8933  # From /usr/include/linux/sockios.h
131
 
        with contextlib.closing(socket.socket()) as s:
132
 
            ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
133
 
                                struct.pack(b"16s16x", interface))
134
 
        interface_index = struct.unpack("I", ifreq[16:20])[0]
135
 
        return interface_index
136
 
 
137
 
 
138
 
def copy_function(func):
139
 
    """Make a copy of a function"""
140
 
    if sys.version_info.major == 2:
141
 
        return types.FunctionType(func.func_code,
142
 
                                  func.func_globals,
143
 
                                  func.func_name,
144
 
                                  func.func_defaults,
145
 
                                  func.func_closure)
146
 
    else:
147
 
        return types.FunctionType(func.__code__,
148
 
                                  func.__globals__,
149
 
                                  func.__name__,
150
 
                                  func.__defaults__,
151
 
                                  func.__closure__)
152
 
 
153
 
 
154
 
def initlogger(debug, level=logging.WARNING):
155
 
    """init logger and add loglevel"""
156
 
    
157
 
    global syslogger
158
 
    syslogger = (logging.handlers.SysLogHandler(
159
 
        facility = logging.handlers.SysLogHandler.LOG_DAEMON,
160
 
        address = "/dev/log"))
161
 
    syslogger.setFormatter(logging.Formatter
162
 
                           ('Mandos [%(process)d]: %(levelname)s:'
163
 
                            ' %(message)s'))
164
 
    logger.addHandler(syslogger)
165
 
    
166
 
    if debug:
167
 
        console = logging.StreamHandler()
168
 
        console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
169
 
                                               ' [%(process)d]:'
170
 
                                               ' %(levelname)s:'
171
 
                                               ' %(message)s'))
172
 
        logger.addHandler(console)
173
 
    logger.setLevel(level)
174
 
 
175
 
 
176
 
class PGPError(Exception):
177
 
    """Exception if encryption/decryption fails"""
178
 
    pass
179
 
 
180
 
 
181
 
class PGPEngine(object):
182
 
    """A simple class for OpenPGP symmetric encryption & decryption"""
183
 
    
184
 
    def __init__(self):
185
 
        self.tempdir = tempfile.mkdtemp(prefix="mandos-")
186
 
        self.gpg = "gpg"
187
 
        try:
188
 
            output = subprocess.check_output(["gpgconf"])
189
 
            for line in output.splitlines():
190
 
                name, text, path = line.split(b":")
191
 
                if name == "gpg":
192
 
                    self.gpg = path
193
 
                    break
194
 
        except OSError as e:
195
 
            if e.errno != errno.ENOENT:
196
 
                raise
197
 
        self.gnupgargs = ['--batch',
198
 
                          '--homedir', self.tempdir,
199
 
                          '--force-mdc',
200
 
                          '--quiet']
201
 
        # Only GPG version 1 has the --no-use-agent option.
202
 
        if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
203
 
            self.gnupgargs.append("--no-use-agent")
204
 
    
205
 
    def __enter__(self):
206
 
        return self
207
 
    
208
 
    def __exit__(self, exc_type, exc_value, traceback):
209
 
        self._cleanup()
210
 
        return False
211
 
    
212
 
    def __del__(self):
213
 
        self._cleanup()
214
 
    
215
 
    def _cleanup(self):
216
 
        if self.tempdir is not None:
217
 
            # Delete contents of tempdir
218
 
            for root, dirs, files in os.walk(self.tempdir,
219
 
                                             topdown = False):
220
 
                for filename in files:
221
 
                    os.remove(os.path.join(root, filename))
222
 
                for dirname in dirs:
223
 
                    os.rmdir(os.path.join(root, dirname))
224
 
            # Remove tempdir
225
 
            os.rmdir(self.tempdir)
226
 
            self.tempdir = None
227
 
    
228
 
    def password_encode(self, password):
229
 
        # Passphrase can not be empty and can not contain newlines or
230
 
        # NUL bytes.  So we prefix it and hex encode it.
231
 
        encoded = b"mandos" + binascii.hexlify(password)
232
 
        if len(encoded) > 2048:
233
 
            # GnuPG can't handle long passwords, so encode differently
234
 
            encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
235
 
                       .replace(b"\n", b"\\n")
236
 
                       .replace(b"\0", b"\\x00"))
237
 
        return encoded
238
 
    
239
 
    def encrypt(self, data, password):
240
 
        passphrase = self.password_encode(password)
241
 
        with tempfile.NamedTemporaryFile(
242
 
                dir=self.tempdir) as passfile:
243
 
            passfile.write(passphrase)
244
 
            passfile.flush()
245
 
            proc = subprocess.Popen([self.gpg, '--symmetric',
246
 
                                     '--passphrase-file',
247
 
                                     passfile.name]
248
 
                                    + self.gnupgargs,
249
 
                                    stdin = subprocess.PIPE,
250
 
                                    stdout = subprocess.PIPE,
251
 
                                    stderr = subprocess.PIPE)
252
 
            ciphertext, err = proc.communicate(input = data)
253
 
        if proc.returncode != 0:
254
 
            raise PGPError(err)
255
 
        return ciphertext
256
 
    
257
 
    def decrypt(self, data, password):
258
 
        passphrase = self.password_encode(password)
259
 
        with tempfile.NamedTemporaryFile(
260
 
                dir = self.tempdir) as passfile:
261
 
            passfile.write(passphrase)
262
 
            passfile.flush()
263
 
            proc = subprocess.Popen([self.gpg, '--decrypt',
264
 
                                     '--passphrase-file',
265
 
                                     passfile.name]
266
 
                                    + self.gnupgargs,
267
 
                                    stdin = subprocess.PIPE,
268
 
                                    stdout = subprocess.PIPE,
269
 
                                    stderr = subprocess.PIPE)
270
 
            decrypted_plaintext, err = proc.communicate(input = data)
271
 
        if proc.returncode != 0:
272
 
            raise PGPError(err)
273
 
        return decrypted_plaintext
274
 
 
275
 
# Pretend that we have an Avahi module
276
 
class Avahi(object):
277
 
    """This isn't so much a class as it is a module-like namespace.
278
 
    It is instantiated once, and simulates having an Avahi module."""
279
 
    IF_UNSPEC = -1              # avahi-common/address.h
280
 
    PROTO_UNSPEC = -1           # avahi-common/address.h
281
 
    PROTO_INET = 0              # avahi-common/address.h
282
 
    PROTO_INET6 = 1             # avahi-common/address.h
283
 
    DBUS_NAME = "org.freedesktop.Avahi"
284
 
    DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
285
 
    DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
286
 
    DBUS_PATH_SERVER = "/"
287
 
    def string_array_to_txt_array(self, t):
288
 
        return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
289
 
                           for s in t), signature="ay")
290
 
    ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
291
 
    ENTRY_GROUP_COLLISION = 3   # avahi-common/defs.h
292
 
    ENTRY_GROUP_FAILURE = 4     # avahi-common/defs.h
293
 
    SERVER_INVALID = 0          # avahi-common/defs.h
294
 
    SERVER_REGISTERING = 1      # avahi-common/defs.h
295
 
    SERVER_RUNNING = 2          # avahi-common/defs.h
296
 
    SERVER_COLLISION = 3        # avahi-common/defs.h
297
 
    SERVER_FAILURE = 4          # avahi-common/defs.h
298
 
avahi = Avahi()
 
81
        SO_BINDTODEVICE = None
 
82
 
 
83
 
 
84
version = "1.0.14"
 
85
 
 
86
#logger = logging.getLogger(u'mandos')
 
87
logger = logging.Logger(u'mandos')
 
88
syslogger = (logging.handlers.SysLogHandler
 
89
             (facility = logging.handlers.SysLogHandler.LOG_DAEMON,
 
90
              address = "/dev/log"))
 
91
syslogger.setFormatter(logging.Formatter
 
92
                       (u'Mandos [%(process)d]: %(levelname)s:'
 
93
                        u' %(message)s'))
 
94
logger.addHandler(syslogger)
 
95
 
 
96
console = logging.StreamHandler()
 
97
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
 
98
                                       u' %(levelname)s:'
 
99
                                       u' %(message)s'))
 
100
logger.addHandler(console)
299
101
 
300
102
class AvahiError(Exception):
301
103
    def __init__(self, value, *args, **kwargs):
302
104
        self.value = value
303
 
        return super(AvahiError, self).__init__(value, *args,
304
 
                                                **kwargs)
305
 
 
 
105
        super(AvahiError, self).__init__(value, *args, **kwargs)
 
106
    def __unicode__(self):
 
107
        return unicode(repr(self.value))
306
108
 
307
109
class AvahiServiceError(AvahiError):
308
110
    pass
309
111
 
310
 
 
311
112
class AvahiGroupError(AvahiError):
312
113
    pass
313
114
 
318
119
    Attributes:
319
120
    interface: integer; avahi.IF_UNSPEC or an interface index.
320
121
               Used to optionally bind to the specified interface.
321
 
    name: string; Example: 'Mandos'
322
 
    type: string; Example: '_mandos._tcp'.
323
 
     See <https://www.iana.org/assignments/service-names-port-numbers>
 
122
    name: string; Example: u'Mandos'
 
123
    type: string; Example: u'_mandos._tcp'.
 
124
                  See <http://www.dns-sd.org/ServiceTypes.html>
324
125
    port: integer; what port to announce
325
126
    TXT: list of strings; TXT record for the service
326
127
    domain: string; Domain to publish on, default to .local if empty.
332
133
    server: D-Bus Server
333
134
    bus: dbus.SystemBus()
334
135
    """
335
 
    
336
 
    def __init__(self,
337
 
                 interface = avahi.IF_UNSPEC,
338
 
                 name = None,
339
 
                 servicetype = None,
340
 
                 port = None,
341
 
                 TXT = None,
342
 
                 domain = "",
343
 
                 host = "",
344
 
                 max_renames = 32768,
345
 
                 protocol = avahi.PROTO_UNSPEC,
346
 
                 bus = None):
 
136
    def __init__(self, interface = avahi.IF_UNSPEC, name = None,
 
137
                 servicetype = None, port = None, TXT = None,
 
138
                 domain = u"", host = u"", max_renames = 32768,
 
139
                 protocol = avahi.PROTO_UNSPEC, bus = None):
347
140
        self.interface = interface
348
141
        self.name = name
349
142
        self.type = servicetype
357
150
        self.group = None       # our entry group
358
151
        self.server = None
359
152
        self.bus = bus
360
 
        self.entry_group_state_changed_match = None
361
 
    
362
 
    def rename(self, remove=True):
 
153
    def rename(self):
363
154
        """Derived from the Avahi example code"""
364
155
        if self.rename_count >= self.max_renames:
365
 
            logger.critical("No suitable Zeroconf service name found"
366
 
                            " after %i retries, exiting.",
 
156
            logger.critical(u"No suitable Zeroconf service name found"
 
157
                            u" after %i retries, exiting.",
367
158
                            self.rename_count)
368
 
            raise AvahiServiceError("Too many renames")
369
 
        self.name = str(
370
 
            self.server.GetAlternativeServiceName(self.name))
 
159
            raise AvahiServiceError(u"Too many renames")
 
160
        self.name = unicode(self.server.GetAlternativeServiceName(self.name))
 
161
        logger.info(u"Changing Zeroconf service name to %r ...",
 
162
                    self.name)
 
163
        syslogger.setFormatter(logging.Formatter
 
164
                               (u'Mandos (%s) [%%(process)d]:'
 
165
                                u' %%(levelname)s: %%(message)s'
 
166
                                % self.name))
 
167
        self.remove()
 
168
        try:
 
169
            self.add()
 
170
        except dbus.exceptions.DBusException, error:
 
171
            logger.critical(u"DBusException: %s", error)
 
172
            self.cleanup()
 
173
            os._exit(1)
371
174
        self.rename_count += 1
372
 
        logger.info("Changing Zeroconf service name to %r ...",
373
 
                    self.name)
374
 
        if remove:
375
 
            self.remove()
376
 
        try:
377
 
            self.add()
378
 
        except dbus.exceptions.DBusException as error:
379
 
            if (error.get_dbus_name()
380
 
                == "org.freedesktop.Avahi.CollisionError"):
381
 
                logger.info("Local Zeroconf service name collision.")
382
 
                return self.rename(remove=False)
383
 
            else:
384
 
                logger.critical("D-Bus Exception", exc_info=error)
385
 
                self.cleanup()
386
 
                os._exit(1)
387
 
    
388
175
    def remove(self):
389
176
        """Derived from the Avahi example code"""
390
 
        if self.entry_group_state_changed_match is not None:
391
 
            self.entry_group_state_changed_match.remove()
392
 
            self.entry_group_state_changed_match = None
393
177
        if self.group is not None:
394
178
            self.group.Reset()
395
 
    
396
179
    def add(self):
397
180
        """Derived from the Avahi example code"""
398
 
        self.remove()
399
181
        if self.group is None:
400
182
            self.group = dbus.Interface(
401
183
                self.bus.get_object(avahi.DBUS_NAME,
402
184
                                    self.server.EntryGroupNew()),
403
185
                avahi.DBUS_INTERFACE_ENTRY_GROUP)
404
 
        self.entry_group_state_changed_match = (
405
 
            self.group.connect_to_signal(
406
 
                'StateChanged', self.entry_group_state_changed))
407
 
        logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
 
186
            self.group.connect_to_signal('StateChanged',
 
187
                                         self
 
188
                                         .entry_group_state_changed)
 
189
        logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
408
190
                     self.name, self.type)
409
191
        self.group.AddService(
410
192
            self.interface,
415
197
            dbus.UInt16(self.port),
416
198
            avahi.string_array_to_txt_array(self.TXT))
417
199
        self.group.Commit()
418
 
    
419
200
    def entry_group_state_changed(self, state, error):
420
201
        """Derived from the Avahi example code"""
421
 
        logger.debug("Avahi entry group state change: %i", state)
 
202
        logger.debug(u"Avahi entry group state change: %i", state)
422
203
        
423
204
        if state == avahi.ENTRY_GROUP_ESTABLISHED:
424
 
            logger.debug("Zeroconf service established.")
 
205
            logger.debug(u"Zeroconf service established.")
425
206
        elif state == avahi.ENTRY_GROUP_COLLISION:
426
 
            logger.info("Zeroconf service name collision.")
 
207
            logger.warning(u"Zeroconf service name collision.")
427
208
            self.rename()
428
209
        elif state == avahi.ENTRY_GROUP_FAILURE:
429
 
            logger.critical("Avahi: Error in group state changed %s",
430
 
                            str(error))
431
 
            raise AvahiGroupError("State changed: {!s}".format(error))
432
 
    
 
210
            logger.critical(u"Avahi: Error in group state changed %s",
 
211
                            unicode(error))
 
212
            raise AvahiGroupError(u"State changed: %s"
 
213
                                  % unicode(error))
433
214
    def cleanup(self):
434
215
        """Derived from the Avahi example code"""
435
216
        if self.group is not None:
436
 
            try:
437
 
                self.group.Free()
438
 
            except (dbus.exceptions.UnknownMethodException,
439
 
                    dbus.exceptions.DBusException):
440
 
                pass
 
217
            self.group.Free()
441
218
            self.group = None
442
 
        self.remove()
443
 
    
444
 
    def server_state_changed(self, state, error=None):
 
219
    def server_state_changed(self, state):
445
220
        """Derived from the Avahi example code"""
446
 
        logger.debug("Avahi server state change: %i", state)
447
 
        bad_states = {
448
 
            avahi.SERVER_INVALID: "Zeroconf server invalid",
449
 
            avahi.SERVER_REGISTERING: None,
450
 
            avahi.SERVER_COLLISION: "Zeroconf server name collision",
451
 
            avahi.SERVER_FAILURE: "Zeroconf server failure",
452
 
        }
453
 
        if state in bad_states:
454
 
            if bad_states[state] is not None:
455
 
                if error is None:
456
 
                    logger.error(bad_states[state])
457
 
                else:
458
 
                    logger.error(bad_states[state] + ": %r", error)
459
 
            self.cleanup()
 
221
        logger.debug(u"Avahi server state change: %i", state)
 
222
        if state == avahi.SERVER_COLLISION:
 
223
            logger.error(u"Zeroconf server name collision")
 
224
            self.remove()
460
225
        elif state == avahi.SERVER_RUNNING:
461
 
            try:
462
 
                self.add()
463
 
            except dbus.exceptions.DBusException as error:
464
 
                if (error.get_dbus_name()
465
 
                    == "org.freedesktop.Avahi.CollisionError"):
466
 
                    logger.info("Local Zeroconf service name"
467
 
                                " collision.")
468
 
                    return self.rename(remove=False)
469
 
                else:
470
 
                    logger.critical("D-Bus Exception", exc_info=error)
471
 
                    self.cleanup()
472
 
                    os._exit(1)
473
 
        else:
474
 
            if error is None:
475
 
                logger.debug("Unknown state: %r", state)
476
 
            else:
477
 
                logger.debug("Unknown state: %r: %r", state, error)
478
 
    
 
226
            self.add()
479
227
    def activate(self):
480
228
        """Derived from the Avahi example code"""
481
229
        if self.server is None:
482
230
            self.server = dbus.Interface(
483
231
                self.bus.get_object(avahi.DBUS_NAME,
484
 
                                    avahi.DBUS_PATH_SERVER,
485
 
                                    follow_name_owner_changes=True),
 
232
                                    avahi.DBUS_PATH_SERVER),
486
233
                avahi.DBUS_INTERFACE_SERVER)
487
 
        self.server.connect_to_signal("StateChanged",
488
 
                                      self.server_state_changed)
 
234
        self.server.connect_to_signal(u"StateChanged",
 
235
                                 self.server_state_changed)
489
236
        self.server_state_changed(self.server.GetState())
490
237
 
491
238
 
492
 
class AvahiServiceToSyslog(AvahiService):
493
 
    def rename(self, *args, **kwargs):
494
 
        """Add the new name to the syslog messages"""
495
 
        ret = AvahiService.rename(self, *args, **kwargs)
496
 
        syslogger.setFormatter(logging.Formatter(
497
 
            'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
498
 
            .format(self.name)))
499
 
        return ret
500
 
 
501
 
# Pretend that we have a GnuTLS module
502
 
class GnuTLS(object):
503
 
    """This isn't so much a class as it is a module-like namespace.
504
 
    It is instantiated once, and simulates having a GnuTLS module."""
505
 
    
506
 
    _library = ctypes.cdll.LoadLibrary(
507
 
        ctypes.util.find_library("gnutls"))
508
 
    _need_version = b"3.3.0"
509
 
    def __init__(self):
510
 
        # Need to use class name "GnuTLS" here, since this method is
511
 
        # called before the assignment to the "gnutls" global variable
512
 
        # happens.
513
 
        if GnuTLS.check_version(self._need_version) is None:
514
 
            raise GnuTLS.Error("Needs GnuTLS {} or later"
515
 
                               .format(self._need_version))
516
 
    
517
 
    # Unless otherwise indicated, the constants and types below are
518
 
    # all from the gnutls/gnutls.h C header file.
519
 
    
520
 
    # Constants
521
 
    E_SUCCESS = 0
522
 
    E_INTERRUPTED = -52
523
 
    E_AGAIN = -28
524
 
    CRT_OPENPGP = 2
525
 
    CLIENT = 2
526
 
    SHUT_RDWR = 0
527
 
    CRD_CERTIFICATE = 1
528
 
    E_NO_CERTIFICATE_FOUND = -49
529
 
    OPENPGP_FMT_RAW = 0         # gnutls/openpgp.h
530
 
    
531
 
    # Types
532
 
    class session_int(ctypes.Structure):
533
 
        _fields_ = []
534
 
    session_t = ctypes.POINTER(session_int)
535
 
    class certificate_credentials_st(ctypes.Structure):
536
 
        _fields_ = []
537
 
    certificate_credentials_t = ctypes.POINTER(
538
 
        certificate_credentials_st)
539
 
    certificate_type_t = ctypes.c_int
540
 
    class datum_t(ctypes.Structure):
541
 
        _fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
542
 
                    ('size', ctypes.c_uint)]
543
 
    class openpgp_crt_int(ctypes.Structure):
544
 
        _fields_ = []
545
 
    openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
546
 
    openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
547
 
    log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
548
 
    credentials_type_t = ctypes.c_int
549
 
    transport_ptr_t = ctypes.c_void_p
550
 
    close_request_t = ctypes.c_int
551
 
    
552
 
    # Exceptions
553
 
    class Error(Exception):
554
 
        # We need to use the class name "GnuTLS" here, since this
555
 
        # exception might be raised from within GnuTLS.__init__,
556
 
        # which is called before the assignment to the "gnutls"
557
 
        # global variable has happened.
558
 
        def __init__(self, message = None, code = None, args=()):
559
 
            # Default usage is by a message string, but if a return
560
 
            # code is passed, convert it to a string with
561
 
            # gnutls.strerror()
562
 
            self.code = code
563
 
            if message is None and code is not None:
564
 
                message = GnuTLS.strerror(code)
565
 
            return super(GnuTLS.Error, self).__init__(
566
 
                message, *args)
567
 
    
568
 
    class CertificateSecurityError(Error):
569
 
        pass
570
 
    
571
 
    # Classes
572
 
    class Credentials(object):
573
 
        def __init__(self):
574
 
            self._c_object = gnutls.certificate_credentials_t()
575
 
            gnutls.certificate_allocate_credentials(
576
 
                ctypes.byref(self._c_object))
577
 
            self.type = gnutls.CRD_CERTIFICATE
578
 
        
579
 
        def __del__(self):
580
 
            gnutls.certificate_free_credentials(self._c_object)
581
 
    
582
 
    class ClientSession(object):
583
 
        def __init__(self, socket, credentials = None):
584
 
            self._c_object = gnutls.session_t()
585
 
            gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
586
 
            gnutls.set_default_priority(self._c_object)
587
 
            gnutls.transport_set_ptr(self._c_object, socket.fileno())
588
 
            gnutls.handshake_set_private_extensions(self._c_object,
589
 
                                                    True)
590
 
            self.socket = socket
591
 
            if credentials is None:
592
 
                credentials = gnutls.Credentials()
593
 
            gnutls.credentials_set(self._c_object, credentials.type,
594
 
                                   ctypes.cast(credentials._c_object,
595
 
                                               ctypes.c_void_p))
596
 
            self.credentials = credentials
597
 
        
598
 
        def __del__(self):
599
 
            gnutls.deinit(self._c_object)
600
 
        
601
 
        def handshake(self):
602
 
            return gnutls.handshake(self._c_object)
603
 
        
604
 
        def send(self, data):
605
 
            data = bytes(data)
606
 
            data_len = len(data)
607
 
            while data_len > 0:
608
 
                data_len -= gnutls.record_send(self._c_object,
609
 
                                               data[-data_len:],
610
 
                                               data_len)
611
 
        
612
 
        def bye(self):
613
 
            return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
614
 
    
615
 
    # Error handling functions
616
 
    def _error_code(result):
617
 
        """A function to raise exceptions on errors, suitable
618
 
        for the 'restype' attribute on ctypes functions"""
619
 
        if result >= 0:
620
 
            return result
621
 
        if result == gnutls.E_NO_CERTIFICATE_FOUND:
622
 
            raise gnutls.CertificateSecurityError(code = result)
623
 
        raise gnutls.Error(code = result)
624
 
    
625
 
    def _retry_on_error(result, func, arguments):
626
 
        """A function to retry on some errors, suitable
627
 
        for the 'errcheck' attribute on ctypes functions"""
628
 
        while result < 0:
629
 
            if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
630
 
                return _error_code(result)
631
 
            result = func(*arguments)
632
 
        return result
633
 
    
634
 
    # Unless otherwise indicated, the function declarations below are
635
 
    # all from the gnutls/gnutls.h C header file.
636
 
    
637
 
    # Functions
638
 
    priority_set_direct = _library.gnutls_priority_set_direct
639
 
    priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
640
 
                                    ctypes.POINTER(ctypes.c_char_p)]
641
 
    priority_set_direct.restype = _error_code
642
 
    
643
 
    init = _library.gnutls_init
644
 
    init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
645
 
    init.restype = _error_code
646
 
    
647
 
    set_default_priority = _library.gnutls_set_default_priority
648
 
    set_default_priority.argtypes = [session_t]
649
 
    set_default_priority.restype = _error_code
650
 
    
651
 
    record_send = _library.gnutls_record_send
652
 
    record_send.argtypes = [session_t, ctypes.c_void_p,
653
 
                            ctypes.c_size_t]
654
 
    record_send.restype = ctypes.c_ssize_t
655
 
    record_send.errcheck = _retry_on_error
656
 
    
657
 
    certificate_allocate_credentials = (
658
 
        _library.gnutls_certificate_allocate_credentials)
659
 
    certificate_allocate_credentials.argtypes = [
660
 
        ctypes.POINTER(certificate_credentials_t)]
661
 
    certificate_allocate_credentials.restype = _error_code
662
 
    
663
 
    certificate_free_credentials = (
664
 
        _library.gnutls_certificate_free_credentials)
665
 
    certificate_free_credentials.argtypes = [certificate_credentials_t]
666
 
    certificate_free_credentials.restype = None
667
 
    
668
 
    handshake_set_private_extensions = (
669
 
        _library.gnutls_handshake_set_private_extensions)
670
 
    handshake_set_private_extensions.argtypes = [session_t,
671
 
                                                 ctypes.c_int]
672
 
    handshake_set_private_extensions.restype = None
673
 
    
674
 
    credentials_set = _library.gnutls_credentials_set
675
 
    credentials_set.argtypes = [session_t, credentials_type_t,
676
 
                                ctypes.c_void_p]
677
 
    credentials_set.restype = _error_code
678
 
    
679
 
    strerror = _library.gnutls_strerror
680
 
    strerror.argtypes = [ctypes.c_int]
681
 
    strerror.restype = ctypes.c_char_p
682
 
    
683
 
    certificate_type_get = _library.gnutls_certificate_type_get
684
 
    certificate_type_get.argtypes = [session_t]
685
 
    certificate_type_get.restype = _error_code
686
 
    
687
 
    certificate_get_peers = _library.gnutls_certificate_get_peers
688
 
    certificate_get_peers.argtypes = [session_t,
689
 
                                      ctypes.POINTER(ctypes.c_uint)]
690
 
    certificate_get_peers.restype = ctypes.POINTER(datum_t)
691
 
    
692
 
    global_set_log_level = _library.gnutls_global_set_log_level
693
 
    global_set_log_level.argtypes = [ctypes.c_int]
694
 
    global_set_log_level.restype = None
695
 
    
696
 
    global_set_log_function = _library.gnutls_global_set_log_function
697
 
    global_set_log_function.argtypes = [log_func]
698
 
    global_set_log_function.restype = None
699
 
    
700
 
    deinit = _library.gnutls_deinit
701
 
    deinit.argtypes = [session_t]
702
 
    deinit.restype = None
703
 
    
704
 
    handshake = _library.gnutls_handshake
705
 
    handshake.argtypes = [session_t]
706
 
    handshake.restype = _error_code
707
 
    handshake.errcheck = _retry_on_error
708
 
    
709
 
    transport_set_ptr = _library.gnutls_transport_set_ptr
710
 
    transport_set_ptr.argtypes = [session_t, transport_ptr_t]
711
 
    transport_set_ptr.restype = None
712
 
    
713
 
    bye = _library.gnutls_bye
714
 
    bye.argtypes = [session_t, close_request_t]
715
 
    bye.restype = _error_code
716
 
    bye.errcheck = _retry_on_error
717
 
    
718
 
    check_version = _library.gnutls_check_version
719
 
    check_version.argtypes = [ctypes.c_char_p]
720
 
    check_version.restype = ctypes.c_char_p
721
 
    
722
 
    # All the function declarations below are from gnutls/openpgp.h
723
 
    
724
 
    openpgp_crt_init = _library.gnutls_openpgp_crt_init
725
 
    openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
726
 
    openpgp_crt_init.restype = _error_code
727
 
    
728
 
    openpgp_crt_import = _library.gnutls_openpgp_crt_import
729
 
    openpgp_crt_import.argtypes = [openpgp_crt_t,
730
 
                                   ctypes.POINTER(datum_t),
731
 
                                   openpgp_crt_fmt_t]
732
 
    openpgp_crt_import.restype = _error_code
733
 
    
734
 
    openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
735
 
    openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
736
 
                                        ctypes.POINTER(ctypes.c_uint)]
737
 
    openpgp_crt_verify_self.restype = _error_code
738
 
    
739
 
    openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
740
 
    openpgp_crt_deinit.argtypes = [openpgp_crt_t]
741
 
    openpgp_crt_deinit.restype = None
742
 
    
743
 
    openpgp_crt_get_fingerprint = (
744
 
        _library.gnutls_openpgp_crt_get_fingerprint)
745
 
    openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
746
 
                                            ctypes.c_void_p,
747
 
                                            ctypes.POINTER(
748
 
                                                ctypes.c_size_t)]
749
 
    openpgp_crt_get_fingerprint.restype = _error_code
750
 
    
751
 
    # Remove non-public functions
752
 
    del _error_code, _retry_on_error
753
 
# Create the global "gnutls" object, simulating a module
754
 
gnutls = GnuTLS()
755
 
 
756
 
def call_pipe(connection,       # : multiprocessing.Connection
757
 
              func, *args, **kwargs):
758
 
    """This function is meant to be called by multiprocessing.Process
759
 
    
760
 
    This function runs func(*args, **kwargs), and writes the resulting
761
 
    return value on the provided multiprocessing.Connection.
762
 
    """
763
 
    connection.send(func(*args, **kwargs))
764
 
    connection.close()
765
 
 
766
239
class Client(object):
767
240
    """A representation of a client host served by this server.
768
241
    
769
242
    Attributes:
770
 
    approved:   bool(); 'None' if not yet approved/disapproved
771
 
    approval_delay: datetime.timedelta(); Time to wait for approval
772
 
    approval_duration: datetime.timedelta(); Duration of one approval
 
243
    name:       string; from the config file, used in log messages and
 
244
                        D-Bus identifiers
 
245
    fingerprint: string (40 or 32 hexadecimal digits); used to
 
246
                 uniquely identify the client
 
247
    secret:     bytestring; sent verbatim (over TLS) to client
 
248
    host:       string; available for use by the checker command
 
249
    created:    datetime.datetime(); (UTC) object creation
 
250
    last_enabled: datetime.datetime(); (UTC)
 
251
    enabled:    bool()
 
252
    last_checked_ok: datetime.datetime(); (UTC) or None
 
253
    timeout:    datetime.timedelta(); How long from last_checked_ok
 
254
                                      until this client is disabled
 
255
    interval:   datetime.timedelta(); How often to start a new checker
 
256
    disable_hook:  If set, called by disable() as disable_hook(self)
773
257
    checker:    subprocess.Popen(); a running checker process used
774
258
                                    to see if the client lives.
775
259
                                    'None' if no process is running.
776
 
    checker_callback_tag: a GLib event source tag, or None
777
 
    checker_command: string; External command which is run to check
778
 
                     if client lives.  %() expansions are done at
 
260
    checker_initiator_tag: a gobject event source tag, or None
 
261
    disable_initiator_tag: - '' -
 
262
    checker_callback_tag:  - '' -
 
263
    checker_command: string; External command which is run to check if
 
264
                     client lives.  %() expansions are done at
779
265
                     runtime with vars(self) as dict, so that for
780
266
                     instance %(name)s can be used in the command.
781
 
    checker_initiator_tag: a GLib event source tag, or None
782
 
    created:    datetime.datetime(); (UTC) object creation
783
 
    client_structure: Object describing what attributes a client has
784
 
                      and is used for storing the client at exit
785
267
    current_checker_command: string; current running checker_command
786
 
    disable_initiator_tag: a GLib event source tag, or None
787
 
    enabled:    bool()
788
 
    fingerprint: string (40 or 32 hexadecimal digits); used to
789
 
                 uniquely identify the client
790
 
    host:       string; available for use by the checker command
791
 
    interval:   datetime.timedelta(); How often to start a new checker
792
 
    last_approval_request: datetime.datetime(); (UTC) or None
793
 
    last_checked_ok: datetime.datetime(); (UTC) or None
794
 
    last_checker_status: integer between 0 and 255 reflecting exit
795
 
                         status of last checker. -1 reflects crashed
796
 
                         checker, -2 means no checker completed yet.
797
 
    last_checker_signal: The signal which killed the last checker, if
798
 
                         last_checker_status is -1
799
 
    last_enabled: datetime.datetime(); (UTC) or None
800
 
    name:       string; from the config file, used in log messages and
801
 
                        D-Bus identifiers
802
 
    secret:     bytestring; sent verbatim (over TLS) to client
803
 
    timeout:    datetime.timedelta(); How long from last_checked_ok
804
 
                                      until this client is disabled
805
 
    extended_timeout:   extra long timeout when secret has been sent
806
 
    runtime_expansions: Allowed attributes for runtime expansion.
807
 
    expires:    datetime.datetime(); time (UTC) when a client will be
808
 
                disabled, or None
809
 
    server_settings: The server_settings dict from main()
 
268
    approval_delay: datetime.timedelta(); Time to wait for approval
 
269
    _approved:   bool(); 'None' if not yet approved/disapproved
 
270
    approval_duration: datetime.timedelta(); Duration of one approval
810
271
    """
811
272
    
812
 
    runtime_expansions = ("approval_delay", "approval_duration",
813
 
                          "created", "enabled", "expires",
814
 
                          "fingerprint", "host", "interval",
815
 
                          "last_approval_request", "last_checked_ok",
816
 
                          "last_enabled", "name", "timeout")
817
 
    client_defaults = {
818
 
        "timeout": "PT5M",
819
 
        "extended_timeout": "PT15M",
820
 
        "interval": "PT2M",
821
 
        "checker": "fping -q -- %%(host)s",
822
 
        "host": "",
823
 
        "approval_delay": "PT0S",
824
 
        "approval_duration": "PT1S",
825
 
        "approved_by_default": "True",
826
 
        "enabled": "True",
827
 
    }
828
 
    
829
273
    @staticmethod
830
 
    def config_parser(config):
831
 
        """Construct a new dict of client settings of this form:
832
 
        { client_name: {setting_name: value, ...}, ...}
833
 
        with exceptions for any special settings as defined above.
834
 
        NOTE: Must be a pure function. Must return the same result
835
 
        value given the same arguments.
836
 
        """
837
 
        settings = {}
838
 
        for client_name in config.sections():
839
 
            section = dict(config.items(client_name))
840
 
            client = settings[client_name] = {}
841
 
            
842
 
            client["host"] = section["host"]
843
 
            # Reformat values from string types to Python types
844
 
            client["approved_by_default"] = config.getboolean(
845
 
                client_name, "approved_by_default")
846
 
            client["enabled"] = config.getboolean(client_name,
847
 
                                                  "enabled")
848
 
            
849
 
            # Uppercase and remove spaces from fingerprint for later
850
 
            # comparison purposes with return value from the
851
 
            # fingerprint() function
852
 
            client["fingerprint"] = (section["fingerprint"].upper()
853
 
                                     .replace(" ", ""))
854
 
            if "secret" in section:
855
 
                client["secret"] = codecs.decode(section["secret"]
856
 
                                                 .encode("utf-8"),
857
 
                                                 "base64")
858
 
            elif "secfile" in section:
859
 
                with open(os.path.expanduser(os.path.expandvars
860
 
                                             (section["secfile"])),
861
 
                          "rb") as secfile:
862
 
                    client["secret"] = secfile.read()
863
 
            else:
864
 
                raise TypeError("No secret or secfile for section {}"
865
 
                                .format(section))
866
 
            client["timeout"] = string_to_delta(section["timeout"])
867
 
            client["extended_timeout"] = string_to_delta(
868
 
                section["extended_timeout"])
869
 
            client["interval"] = string_to_delta(section["interval"])
870
 
            client["approval_delay"] = string_to_delta(
871
 
                section["approval_delay"])
872
 
            client["approval_duration"] = string_to_delta(
873
 
                section["approval_duration"])
874
 
            client["checker_command"] = section["checker"]
875
 
            client["last_approval_request"] = None
876
 
            client["last_checked_ok"] = None
877
 
            client["last_checker_status"] = -2
878
 
        
879
 
        return settings
880
 
    
881
 
    def __init__(self, settings, name = None, server_settings=None):
 
274
    def _timedelta_to_milliseconds(td):
 
275
        "Convert a datetime.timedelta() to milliseconds"
 
276
        return ((td.days * 24 * 60 * 60 * 1000)
 
277
                + (td.seconds * 1000)
 
278
                + (td.microseconds // 1000))
 
279
    
 
280
    def timeout_milliseconds(self):
 
281
        "Return the 'timeout' attribute in milliseconds"
 
282
        return self._timedelta_to_milliseconds(self.timeout)
 
283
    
 
284
    def interval_milliseconds(self):
 
285
        "Return the 'interval' attribute in milliseconds"
 
286
        return self._timedelta_to_milliseconds(self.interval)
 
287
 
 
288
    def approval_delay_milliseconds(self):
 
289
        return self._timedelta_to_milliseconds(self.approval_delay)
 
290
    
 
291
    def __init__(self, name = None, disable_hook=None, config=None):
 
292
        """Note: the 'checker' key in 'config' sets the
 
293
        'checker_command' attribute and *not* the 'checker'
 
294
        attribute."""
882
295
        self.name = name
883
 
        if server_settings is None:
884
 
            server_settings = {}
885
 
        self.server_settings = server_settings
886
 
        # adding all client settings
887
 
        for setting, value in settings.items():
888
 
            setattr(self, setting, value)
889
 
        
890
 
        if self.enabled:
891
 
            if not hasattr(self, "last_enabled"):
892
 
                self.last_enabled = datetime.datetime.utcnow()
893
 
            if not hasattr(self, "expires"):
894
 
                self.expires = (datetime.datetime.utcnow()
895
 
                                + self.timeout)
 
296
        if config is None:
 
297
            config = {}
 
298
        logger.debug(u"Creating client %r", self.name)
 
299
        # Uppercase and remove spaces from fingerprint for later
 
300
        # comparison purposes with return value from the fingerprint()
 
301
        # function
 
302
        self.fingerprint = (config[u"fingerprint"].upper()
 
303
                            .replace(u" ", u""))
 
304
        logger.debug(u"  Fingerprint: %s", self.fingerprint)
 
305
        if u"secret" in config:
 
306
            self.secret = config[u"secret"].decode(u"base64")
 
307
        elif u"secfile" in config:
 
308
            with open(os.path.expanduser(os.path.expandvars
 
309
                                         (config[u"secfile"])),
 
310
                      "rb") as secfile:
 
311
                self.secret = secfile.read()
896
312
        else:
897
 
            self.last_enabled = None
898
 
            self.expires = None
899
 
        
900
 
        logger.debug("Creating client %r", self.name)
901
 
        logger.debug("  Fingerprint: %s", self.fingerprint)
902
 
        self.created = settings.get("created",
903
 
                                    datetime.datetime.utcnow())
904
 
        
905
 
        # attributes specific for this server instance
 
313
            raise TypeError(u"No secret or secfile for client %s"
 
314
                            % self.name)
 
315
        self.host = config.get(u"host", u"")
 
316
        self.created = datetime.datetime.utcnow()
 
317
        self.enabled = False
 
318
        self.last_enabled = None
 
319
        self.last_checked_ok = None
 
320
        self.timeout = string_to_delta(config[u"timeout"])
 
321
        self.interval = string_to_delta(config[u"interval"])
 
322
        self.disable_hook = disable_hook
906
323
        self.checker = None
907
324
        self.checker_initiator_tag = None
908
325
        self.disable_initiator_tag = None
909
326
        self.checker_callback_tag = None
 
327
        self.checker_command = config[u"checker"]
910
328
        self.current_checker_command = None
911
 
        self.approved = None
 
329
        self.last_connect = None
 
330
        self._approved = None
 
331
        self.approved_by_default = config.get(u"approved_by_default",
 
332
                                              True)
912
333
        self.approvals_pending = 0
913
 
        self.changedstate = multiprocessing_manager.Condition(
914
 
            multiprocessing_manager.Lock())
915
 
        self.client_structure = [attr
916
 
                                 for attr in self.__dict__.keys()
917
 
                                 if not attr.startswith("_")]
918
 
        self.client_structure.append("client_structure")
919
 
        
920
 
        for name, t in inspect.getmembers(
921
 
                type(self), lambda obj: isinstance(obj, property)):
922
 
            if not name.startswith("_"):
923
 
                self.client_structure.append(name)
 
334
        self.approval_delay = string_to_delta(
 
335
            config[u"approval_delay"])
 
336
        self.approval_duration = string_to_delta(
 
337
            config[u"approval_duration"])
 
338
        self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
924
339
    
925
 
    # Send notice to process children that client state has changed
926
340
    def send_changedstate(self):
927
 
        with self.changedstate:
928
 
            self.changedstate.notify_all()
929
 
    
 
341
        self.changedstate.acquire()
 
342
        self.changedstate.notify_all()
 
343
        self.changedstate.release()
 
344
        
930
345
    def enable(self):
931
346
        """Start this client's checker and timeout hooks"""
932
 
        if getattr(self, "enabled", False):
 
347
        if getattr(self, u"enabled", False):
933
348
            # Already enabled
934
349
            return
935
 
        self.expires = datetime.datetime.utcnow() + self.timeout
936
 
        self.enabled = True
 
350
        self.send_changedstate()
937
351
        self.last_enabled = datetime.datetime.utcnow()
938
 
        self.init_checker()
939
 
        self.send_changedstate()
 
352
        # Schedule a new checker to be started an 'interval' from now,
 
353
        # and every interval from then on.
 
354
        self.checker_initiator_tag = (gobject.timeout_add
 
355
                                      (self.interval_milliseconds(),
 
356
                                       self.start_checker))
 
357
        # Schedule a disable() when 'timeout' has passed
 
358
        self.disable_initiator_tag = (gobject.timeout_add
 
359
                                   (self.timeout_milliseconds(),
 
360
                                    self.disable))
 
361
        self.enabled = True
 
362
        # Also start a new checker *right now*.
 
363
        self.start_checker()
940
364
    
941
365
    def disable(self, quiet=True):
942
366
        """Disable this client."""
943
367
        if not getattr(self, "enabled", False):
944
368
            return False
945
369
        if not quiet:
946
 
            logger.info("Disabling client %s", self.name)
947
 
        if getattr(self, "disable_initiator_tag", None) is not None:
948
 
            GLib.source_remove(self.disable_initiator_tag)
 
370
            self.send_changedstate()
 
371
        if not quiet:
 
372
            logger.info(u"Disabling client %s", self.name)
 
373
        if getattr(self, u"disable_initiator_tag", False):
 
374
            gobject.source_remove(self.disable_initiator_tag)
949
375
            self.disable_initiator_tag = None
950
 
        self.expires = None
951
 
        if getattr(self, "checker_initiator_tag", None) is not None:
952
 
            GLib.source_remove(self.checker_initiator_tag)
 
376
        if getattr(self, u"checker_initiator_tag", False):
 
377
            gobject.source_remove(self.checker_initiator_tag)
953
378
            self.checker_initiator_tag = None
954
379
        self.stop_checker()
 
380
        if self.disable_hook:
 
381
            self.disable_hook(self)
955
382
        self.enabled = False
956
 
        if not quiet:
957
 
            self.send_changedstate()
958
 
        # Do not run this again if called by a GLib.timeout_add
 
383
        # Do not run this again if called by a gobject.timeout_add
959
384
        return False
960
385
    
961
386
    def __del__(self):
 
387
        self.disable_hook = None
962
388
        self.disable()
963
389
    
964
 
    def init_checker(self):
965
 
        # Schedule a new checker to be started an 'interval' from now,
966
 
        # and every interval from then on.
967
 
        if self.checker_initiator_tag is not None:
968
 
            GLib.source_remove(self.checker_initiator_tag)
969
 
        self.checker_initiator_tag = GLib.timeout_add(
970
 
            int(self.interval.total_seconds() * 1000),
971
 
            self.start_checker)
972
 
        # Schedule a disable() when 'timeout' has passed
973
 
        if self.disable_initiator_tag is not None:
974
 
            GLib.source_remove(self.disable_initiator_tag)
975
 
        self.disable_initiator_tag = GLib.timeout_add(
976
 
            int(self.timeout.total_seconds() * 1000), self.disable)
977
 
        # Also start a new checker *right now*.
978
 
        self.start_checker()
979
 
    
980
 
    def checker_callback(self, source, condition, connection,
981
 
                         command):
 
390
    def checker_callback(self, pid, condition, command):
982
391
        """The checker has completed, so take appropriate actions."""
983
392
        self.checker_callback_tag = None
984
393
        self.checker = None
985
 
        # Read return code from connection (see call_pipe)
986
 
        returncode = connection.recv()
987
 
        connection.close()
988
 
        
989
 
        if returncode >= 0:
990
 
            self.last_checker_status = returncode
991
 
            self.last_checker_signal = None
992
 
            if self.last_checker_status == 0:
993
 
                logger.info("Checker for %(name)s succeeded",
 
394
        if os.WIFEXITED(condition):
 
395
            exitstatus = os.WEXITSTATUS(condition)
 
396
            if exitstatus == 0:
 
397
                logger.info(u"Checker for %(name)s succeeded",
994
398
                            vars(self))
995
399
                self.checked_ok()
996
400
            else:
997
 
                logger.info("Checker for %(name)s failed", vars(self))
 
401
                logger.info(u"Checker for %(name)s failed",
 
402
                            vars(self))
998
403
        else:
999
 
            self.last_checker_status = -1
1000
 
            self.last_checker_signal = -returncode
1001
 
            logger.warning("Checker for %(name)s crashed?",
 
404
            logger.warning(u"Checker for %(name)s crashed?",
1002
405
                           vars(self))
1003
 
        return False
1004
406
    
1005
407
    def checked_ok(self):
1006
 
        """Assert that the client has been seen, alive and well."""
 
408
        """Bump up the timeout for this client.
 
409
        
 
410
        This should only be called when the client has been seen,
 
411
        alive and well.
 
412
        """
1007
413
        self.last_checked_ok = datetime.datetime.utcnow()
1008
 
        self.last_checker_status = 0
1009
 
        self.last_checker_signal = None
1010
 
        self.bump_timeout()
1011
 
    
1012
 
    def bump_timeout(self, timeout=None):
1013
 
        """Bump up the timeout for this client."""
1014
 
        if timeout is None:
1015
 
            timeout = self.timeout
1016
 
        if self.disable_initiator_tag is not None:
1017
 
            GLib.source_remove(self.disable_initiator_tag)
1018
 
            self.disable_initiator_tag = None
1019
 
        if getattr(self, "enabled", False):
1020
 
            self.disable_initiator_tag = GLib.timeout_add(
1021
 
                int(timeout.total_seconds() * 1000), self.disable)
1022
 
            self.expires = datetime.datetime.utcnow() + timeout
1023
 
    
1024
 
    def need_approval(self):
1025
 
        self.last_approval_request = datetime.datetime.utcnow()
 
414
        gobject.source_remove(self.disable_initiator_tag)
 
415
        self.disable_initiator_tag = (gobject.timeout_add
 
416
                                      (self.timeout_milliseconds(),
 
417
                                       self.disable))
1026
418
    
1027
419
    def start_checker(self):
1028
420
        """Start a new checker subprocess if one is not running.
1030
422
        If a checker already exists, leave it running and do
1031
423
        nothing."""
1032
424
        # The reason for not killing a running checker is that if we
1033
 
        # did that, and if a checker (for some reason) started running
1034
 
        # slowly and taking more than 'interval' time, then the client
1035
 
        # would inevitably timeout, since no checker would get a
1036
 
        # chance to run to completion.  If we instead leave running
 
425
        # did that, then if a checker (for some reason) started
 
426
        # running slowly and taking more than 'interval' time, the
 
427
        # client would inevitably timeout, since no checker would get
 
428
        # a chance to run to completion.  If we instead leave running
1037
429
        # checkers alone, the checker would have to take more time
1038
430
        # than 'timeout' for the client to be disabled, which is as it
1039
431
        # should be.
1040
432
        
1041
 
        if self.checker is not None and not self.checker.is_alive():
1042
 
            logger.warning("Checker was not alive; joining")
1043
 
            self.checker.join()
1044
 
            self.checker = None
 
433
        # If a checker exists, make sure it is not a zombie
 
434
        try:
 
435
            pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
 
436
        except (AttributeError, OSError), error:
 
437
            if (isinstance(error, OSError)
 
438
                and error.errno != errno.ECHILD):
 
439
                raise error
 
440
        else:
 
441
            if pid:
 
442
                logger.warning(u"Checker was a zombie")
 
443
                gobject.source_remove(self.checker_callback_tag)
 
444
                self.checker_callback(pid, status,
 
445
                                      self.current_checker_command)
1045
446
        # Start a new checker if needed
1046
447
        if self.checker is None:
1047
 
            # Escape attributes for the shell
1048
 
            escaped_attrs = {
1049
 
                attr: re.escape(str(getattr(self, attr)))
1050
 
                for attr in self.runtime_expansions }
1051
448
            try:
1052
 
                command = self.checker_command % escaped_attrs
1053
 
            except TypeError as error:
1054
 
                logger.error('Could not format string "%s"',
1055
 
                             self.checker_command,
1056
 
                             exc_info=error)
1057
 
                return True     # Try again later
 
449
                # In case checker_command has exactly one % operator
 
450
                command = self.checker_command % self.host
 
451
            except TypeError:
 
452
                # Escape attributes for the shell
 
453
                escaped_attrs = dict((key,
 
454
                                      re.escape(unicode(str(val),
 
455
                                                        errors=
 
456
                                                        u'replace')))
 
457
                                     for key, val in
 
458
                                     vars(self).iteritems())
 
459
                try:
 
460
                    command = self.checker_command % escaped_attrs
 
461
                except TypeError, error:
 
462
                    logger.error(u'Could not format string "%s":'
 
463
                                 u' %s', self.checker_command, error)
 
464
                    return True # Try again later
1058
465
            self.current_checker_command = command
1059
 
            logger.info("Starting checker %r for %s", command,
1060
 
                        self.name)
1061
 
            # We don't need to redirect stdout and stderr, since
1062
 
            # in normal mode, that is already done by daemon(),
1063
 
            # and in debug mode we don't want to.  (Stdin is
1064
 
            # always replaced by /dev/null.)
1065
 
            # The exception is when not debugging but nevertheless
1066
 
            # running in the foreground; use the previously
1067
 
            # created wnull.
1068
 
            popen_args = { "close_fds": True,
1069
 
                           "shell": True,
1070
 
                           "cwd": "/" }
1071
 
            if (not self.server_settings["debug"]
1072
 
                and self.server_settings["foreground"]):
1073
 
                popen_args.update({"stdout": wnull,
1074
 
                                   "stderr": wnull })
1075
 
            pipe = multiprocessing.Pipe(duplex = False)
1076
 
            self.checker = multiprocessing.Process(
1077
 
                target = call_pipe,
1078
 
                args = (pipe[1], subprocess.call, command),
1079
 
                kwargs = popen_args)
1080
 
            self.checker.start()
1081
 
            self.checker_callback_tag = GLib.io_add_watch(
1082
 
                pipe[0].fileno(), GLib.IO_IN,
1083
 
                self.checker_callback, pipe[0], command)
1084
 
        # Re-run this periodically if run by GLib.timeout_add
 
466
            try:
 
467
                logger.info(u"Starting checker %r for %s",
 
468
                            command, self.name)
 
469
                # We don't need to redirect stdout and stderr, since
 
470
                # in normal mode, that is already done by daemon(),
 
471
                # and in debug mode we don't want to.  (Stdin is
 
472
                # always replaced by /dev/null.)
 
473
                self.checker = subprocess.Popen(command,
 
474
                                                close_fds=True,
 
475
                                                shell=True, cwd=u"/")
 
476
                self.checker_callback_tag = (gobject.child_watch_add
 
477
                                             (self.checker.pid,
 
478
                                              self.checker_callback,
 
479
                                              data=command))
 
480
                # The checker may have completed before the gobject
 
481
                # watch was added.  Check for this.
 
482
                pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
 
483
                if pid:
 
484
                    gobject.source_remove(self.checker_callback_tag)
 
485
                    self.checker_callback(pid, status, command)
 
486
            except OSError, error:
 
487
                logger.error(u"Failed to start subprocess: %s",
 
488
                             error)
 
489
        # Re-run this periodically if run by gobject.timeout_add
1085
490
        return True
1086
491
    
1087
492
    def stop_checker(self):
1088
493
        """Force the checker process, if any, to stop."""
1089
494
        if self.checker_callback_tag:
1090
 
            GLib.source_remove(self.checker_callback_tag)
 
495
            gobject.source_remove(self.checker_callback_tag)
1091
496
            self.checker_callback_tag = None
1092
 
        if getattr(self, "checker", None) is None:
 
497
        if getattr(self, u"checker", None) is None:
1093
498
            return
1094
 
        logger.debug("Stopping checker for %(name)s", vars(self))
1095
 
        self.checker.terminate()
 
499
        logger.debug(u"Stopping checker for %(name)s", vars(self))
 
500
        try:
 
501
            os.kill(self.checker.pid, signal.SIGTERM)
 
502
            #time.sleep(0.5)
 
503
            #if self.checker.poll() is None:
 
504
            #    os.kill(self.checker.pid, signal.SIGKILL)
 
505
        except OSError, error:
 
506
            if error.errno != errno.ESRCH: # No such process
 
507
                raise
1096
508
        self.checker = None
1097
509
 
1098
 
 
1099
 
def dbus_service_property(dbus_interface,
1100
 
                          signature="v",
1101
 
                          access="readwrite",
1102
 
                          byte_arrays=False):
 
510
def dbus_service_property(dbus_interface, signature=u"v",
 
511
                          access=u"readwrite", byte_arrays=False):
1103
512
    """Decorators for marking methods of a DBusObjectWithProperties to
1104
513
    become properties on the D-Bus.
1105
514
    
1112
521
    """
1113
522
    # Encoding deeply encoded byte arrays is not supported yet by the
1114
523
    # "Set" method, so we fail early here:
1115
 
    if byte_arrays and signature != "ay":
1116
 
        raise ValueError("Byte arrays not supported for non-'ay'"
1117
 
                         " signature {!r}".format(signature))
1118
 
    
 
524
    if byte_arrays and signature != u"ay":
 
525
        raise ValueError(u"Byte arrays not supported for non-'ay'"
 
526
                         u" signature %r" % signature)
1119
527
    def decorator(func):
1120
528
        func._dbus_is_property = True
1121
529
        func._dbus_interface = dbus_interface
1122
530
        func._dbus_signature = signature
1123
531
        func._dbus_access = access
1124
532
        func._dbus_name = func.__name__
1125
 
        if func._dbus_name.endswith("_dbus_property"):
 
533
        if func._dbus_name.endswith(u"_dbus_property"):
1126
534
            func._dbus_name = func._dbus_name[:-14]
1127
 
        func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1128
 
        return func
1129
 
    
1130
 
    return decorator
1131
 
 
1132
 
 
1133
 
def dbus_interface_annotations(dbus_interface):
1134
 
    """Decorator for marking functions returning interface annotations
1135
 
    
1136
 
    Usage:
1137
 
    
1138
 
    @dbus_interface_annotations("org.example.Interface")
1139
 
    def _foo(self):  # Function name does not matter
1140
 
        return {"org.freedesktop.DBus.Deprecated": "true",
1141
 
                "org.freedesktop.DBus.Property.EmitsChangedSignal":
1142
 
                    "false"}
1143
 
    """
1144
 
    
1145
 
    def decorator(func):
1146
 
        func._dbus_is_interface = True
1147
 
        func._dbus_interface = dbus_interface
1148
 
        func._dbus_name = dbus_interface
1149
 
        return func
1150
 
    
1151
 
    return decorator
1152
 
 
1153
 
 
1154
 
def dbus_annotations(annotations):
1155
 
    """Decorator to annotate D-Bus methods, signals or properties
1156
 
    Usage:
1157
 
    
1158
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1159
 
                       "org.freedesktop.DBus.Property."
1160
 
                       "EmitsChangedSignal": "false"})
1161
 
    @dbus_service_property("org.example.Interface", signature="b",
1162
 
                           access="r")
1163
 
    def Property_dbus_property(self):
1164
 
        return dbus.Boolean(False)
1165
 
    
1166
 
    See also the DBusObjectWithAnnotations class.
1167
 
    """
1168
 
    
1169
 
    def decorator(func):
1170
 
        func._dbus_annotations = annotations
1171
 
        return func
1172
 
    
 
535
        func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
 
536
        return func
1173
537
    return decorator
1174
538
 
1175
539
 
1176
540
class DBusPropertyException(dbus.exceptions.DBusException):
1177
541
    """A base class for D-Bus property-related exceptions
1178
542
    """
1179
 
    pass
 
543
    def __unicode__(self):
 
544
        return unicode(str(self))
1180
545
 
1181
546
 
1182
547
class DBusPropertyAccessException(DBusPropertyException):
1191
556
    pass
1192
557
 
1193
558
 
1194
 
class DBusObjectWithAnnotations(dbus.service.Object):
1195
 
    """A D-Bus object with annotations.
1196
 
    
1197
 
    Classes inheriting from this can use the dbus_annotations
1198
 
    decorator to add annotations to methods or signals.
1199
 
    """
1200
 
    
1201
 
    @staticmethod
1202
 
    def _is_dbus_thing(thing):
1203
 
        """Returns a function testing if an attribute is a D-Bus thing
1204
 
        
1205
 
        If called like _is_dbus_thing("method") it returns a function
1206
 
        suitable for use as predicate to inspect.getmembers().
1207
 
        """
1208
 
        return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1209
 
                                   False)
1210
 
    
1211
 
    def _get_all_dbus_things(self, thing):
1212
 
        """Returns a generator of (name, attribute) pairs
1213
 
        """
1214
 
        return ((getattr(athing.__get__(self), "_dbus_name", name),
1215
 
                 athing.__get__(self))
1216
 
                for cls in self.__class__.__mro__
1217
 
                for name, athing in
1218
 
                inspect.getmembers(cls, self._is_dbus_thing(thing)))
1219
 
    
1220
 
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1221
 
                         out_signature = "s",
1222
 
                         path_keyword = 'object_path',
1223
 
                         connection_keyword = 'connection')
1224
 
    def Introspect(self, object_path, connection):
1225
 
        """Overloading of standard D-Bus method.
1226
 
        
1227
 
        Inserts annotation tags on methods and signals.
1228
 
        """
1229
 
        xmlstring = dbus.service.Object.Introspect(self, object_path,
1230
 
                                                   connection)
1231
 
        try:
1232
 
            document = xml.dom.minidom.parseString(xmlstring)
1233
 
            
1234
 
            for if_tag in document.getElementsByTagName("interface"):
1235
 
                # Add annotation tags
1236
 
                for typ in ("method", "signal"):
1237
 
                    for tag in if_tag.getElementsByTagName(typ):
1238
 
                        annots = dict()
1239
 
                        for name, prop in (self.
1240
 
                                           _get_all_dbus_things(typ)):
1241
 
                            if (name == tag.getAttribute("name")
1242
 
                                and prop._dbus_interface
1243
 
                                == if_tag.getAttribute("name")):
1244
 
                                annots.update(getattr(
1245
 
                                    prop, "_dbus_annotations", {}))
1246
 
                        for name, value in annots.items():
1247
 
                            ann_tag = document.createElement(
1248
 
                                "annotation")
1249
 
                            ann_tag.setAttribute("name", name)
1250
 
                            ann_tag.setAttribute("value", value)
1251
 
                            tag.appendChild(ann_tag)
1252
 
                # Add interface annotation tags
1253
 
                for annotation, value in dict(
1254
 
                    itertools.chain.from_iterable(
1255
 
                        annotations().items()
1256
 
                        for name, annotations
1257
 
                        in self._get_all_dbus_things("interface")
1258
 
                        if name == if_tag.getAttribute("name")
1259
 
                        )).items():
1260
 
                    ann_tag = document.createElement("annotation")
1261
 
                    ann_tag.setAttribute("name", annotation)
1262
 
                    ann_tag.setAttribute("value", value)
1263
 
                    if_tag.appendChild(ann_tag)
1264
 
                # Fix argument name for the Introspect method itself
1265
 
                if (if_tag.getAttribute("name")
1266
 
                                == dbus.INTROSPECTABLE_IFACE):
1267
 
                    for cn in if_tag.getElementsByTagName("method"):
1268
 
                        if cn.getAttribute("name") == "Introspect":
1269
 
                            for arg in cn.getElementsByTagName("arg"):
1270
 
                                if (arg.getAttribute("direction")
1271
 
                                    == "out"):
1272
 
                                    arg.setAttribute("name",
1273
 
                                                     "xml_data")
1274
 
            xmlstring = document.toxml("utf-8")
1275
 
            document.unlink()
1276
 
        except (AttributeError, xml.dom.DOMException,
1277
 
                xml.parsers.expat.ExpatError) as error:
1278
 
            logger.error("Failed to override Introspection method",
1279
 
                         exc_info=error)
1280
 
        return xmlstring
1281
 
 
1282
 
 
1283
 
class DBusObjectWithProperties(DBusObjectWithAnnotations):
 
559
class DBusObjectWithProperties(dbus.service.Object):
1284
560
    """A D-Bus object with properties.
1285
 
    
 
561
 
1286
562
    Classes inheriting from this can use the dbus_service_property
1287
563
    decorator to expose methods as D-Bus properties.  It exposes the
1288
564
    standard Get(), Set(), and GetAll() methods on the D-Bus.
1289
565
    """
1290
566
    
 
567
    @staticmethod
 
568
    def _is_dbus_property(obj):
 
569
        return getattr(obj, u"_dbus_is_property", False)
 
570
    
 
571
    def _get_all_dbus_properties(self):
 
572
        """Returns a generator of (name, attribute) pairs
 
573
        """
 
574
        return ((prop._dbus_name, prop)
 
575
                for name, prop in
 
576
                inspect.getmembers(self, self._is_dbus_property))
 
577
    
1291
578
    def _get_dbus_property(self, interface_name, property_name):
1292
579
        """Returns a bound method if one exists which is a D-Bus
1293
580
        property with the specified name and interface.
1294
581
        """
1295
 
        for cls in self.__class__.__mro__:
1296
 
            for name, value in inspect.getmembers(
1297
 
                    cls, self._is_dbus_thing("property")):
1298
 
                if (value._dbus_name == property_name
1299
 
                    and value._dbus_interface == interface_name):
1300
 
                    return value.__get__(self)
1301
 
        
 
582
        for name in (property_name,
 
583
                     property_name + u"_dbus_property"):
 
584
            prop = getattr(self, name, None)
 
585
            if (prop is None
 
586
                or not self._is_dbus_property(prop)
 
587
                or prop._dbus_name != property_name
 
588
                or (interface_name and prop._dbus_interface
 
589
                    and interface_name != prop._dbus_interface)):
 
590
                continue
 
591
            return prop
1302
592
        # No such property
1303
 
        raise DBusPropertyNotFound("{}:{}.{}".format(
1304
 
            self.dbus_object_path, interface_name, property_name))
1305
 
    
1306
 
    @classmethod
1307
 
    def _get_all_interface_names(cls):
1308
 
        """Get a sequence of all interfaces supported by an object"""
1309
 
        return (name for name in set(getattr(getattr(x, attr),
1310
 
                                             "_dbus_interface", None)
1311
 
                                     for x in (inspect.getmro(cls))
1312
 
                                     for attr in dir(x))
1313
 
                if name is not None)
1314
 
    
1315
 
    @dbus.service.method(dbus.PROPERTIES_IFACE,
1316
 
                         in_signature="ss",
1317
 
                         out_signature="v")
 
593
        raise DBusPropertyNotFound(self.dbus_object_path + u":"
 
594
                                   + interface_name + u"."
 
595
                                   + property_name)
 
596
    
 
597
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
 
598
                         out_signature=u"v")
1318
599
    def Get(self, interface_name, property_name):
1319
600
        """Standard D-Bus property Get() method, see D-Bus standard.
1320
601
        """
1321
602
        prop = self._get_dbus_property(interface_name, property_name)
1322
 
        if prop._dbus_access == "write":
 
603
        if prop._dbus_access == u"write":
1323
604
            raise DBusPropertyAccessException(property_name)
1324
605
        value = prop()
1325
 
        if not hasattr(value, "variant_level"):
 
606
        if not hasattr(value, u"variant_level"):
1326
607
            return value
1327
608
        return type(value)(value, variant_level=value.variant_level+1)
1328
609
    
1329
 
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
 
610
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1330
611
    def Set(self, interface_name, property_name, value):
1331
612
        """Standard D-Bus property Set() method, see D-Bus standard.
1332
613
        """
1333
614
        prop = self._get_dbus_property(interface_name, property_name)
1334
 
        if prop._dbus_access == "read":
 
615
        if prop._dbus_access == u"read":
1335
616
            raise DBusPropertyAccessException(property_name)
1336
 
        if prop._dbus_get_args_options["byte_arrays"]:
 
617
        if prop._dbus_get_args_options[u"byte_arrays"]:
1337
618
            # The byte_arrays option is not supported yet on
1338
619
            # signatures other than "ay".
1339
 
            if prop._dbus_signature != "ay":
1340
 
                raise ValueError("Byte arrays not supported for non-"
1341
 
                                 "'ay' signature {!r}"
1342
 
                                 .format(prop._dbus_signature))
1343
 
            value = dbus.ByteArray(b''.join(chr(byte)
1344
 
                                            for byte in value))
 
620
            if prop._dbus_signature != u"ay":
 
621
                raise ValueError
 
622
            value = dbus.ByteArray(''.join(unichr(byte)
 
623
                                           for byte in value))
1345
624
        prop(value)
1346
625
    
1347
 
    @dbus.service.method(dbus.PROPERTIES_IFACE,
1348
 
                         in_signature="s",
1349
 
                         out_signature="a{sv}")
 
626
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
 
627
                         out_signature=u"a{sv}")
1350
628
    def GetAll(self, interface_name):
1351
629
        """Standard D-Bus property GetAll() method, see D-Bus
1352
630
        standard.
1353
 
        
 
631
 
1354
632
        Note: Will not include properties with access="write".
1355
633
        """
1356
 
        properties = {}
1357
 
        for name, prop in self._get_all_dbus_things("property"):
 
634
        all = {}
 
635
        for name, prop in self._get_all_dbus_properties():
1358
636
            if (interface_name
1359
637
                and interface_name != prop._dbus_interface):
1360
638
                # Interface non-empty but did not match
1361
639
                continue
1362
640
            # Ignore write-only properties
1363
 
            if prop._dbus_access == "write":
 
641
            if prop._dbus_access == u"write":
1364
642
                continue
1365
643
            value = prop()
1366
 
            if not hasattr(value, "variant_level"):
1367
 
                properties[name] = value
 
644
            if not hasattr(value, u"variant_level"):
 
645
                all[name] = value
1368
646
                continue
1369
 
            properties[name] = type(value)(
1370
 
                value, variant_level = value.variant_level + 1)
1371
 
        return dbus.Dictionary(properties, signature="sv")
1372
 
    
1373
 
    @dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1374
 
    def PropertiesChanged(self, interface_name, changed_properties,
1375
 
                          invalidated_properties):
1376
 
        """Standard D-Bus PropertiesChanged() signal, see D-Bus
1377
 
        standard.
1378
 
        """
1379
 
        pass
 
647
            all[name] = type(value)(value, variant_level=
 
648
                                    value.variant_level+1)
 
649
        return dbus.Dictionary(all, signature=u"sv")
1380
650
    
1381
651
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1382
 
                         out_signature="s",
 
652
                         out_signature=u"s",
1383
653
                         path_keyword='object_path',
1384
654
                         connection_keyword='connection')
1385
655
    def Introspect(self, object_path, connection):
1386
 
        """Overloading of standard D-Bus method.
1387
 
        
1388
 
        Inserts property tags and interface annotation tags.
 
656
        """Standard D-Bus method, overloaded to insert property tags.
1389
657
        """
1390
 
        xmlstring = DBusObjectWithAnnotations.Introspect(self,
1391
 
                                                         object_path,
1392
 
                                                         connection)
 
658
        xmlstring = dbus.service.Object.Introspect(self, object_path,
 
659
                                                   connection)
1393
660
        try:
1394
661
            document = xml.dom.minidom.parseString(xmlstring)
1395
 
            
1396
662
            def make_tag(document, name, prop):
1397
 
                e = document.createElement("property")
1398
 
                e.setAttribute("name", name)
1399
 
                e.setAttribute("type", prop._dbus_signature)
1400
 
                e.setAttribute("access", prop._dbus_access)
 
663
                e = document.createElement(u"property")
 
664
                e.setAttribute(u"name", name)
 
665
                e.setAttribute(u"type", prop._dbus_signature)
 
666
                e.setAttribute(u"access", prop._dbus_access)
1401
667
                return e
1402
 
            
1403
 
            for if_tag in document.getElementsByTagName("interface"):
1404
 
                # Add property tags
 
668
            for if_tag in document.getElementsByTagName(u"interface"):
1405
669
                for tag in (make_tag(document, name, prop)
1406
670
                            for name, prop
1407
 
                            in self._get_all_dbus_things("property")
 
671
                            in self._get_all_dbus_properties()
1408
672
                            if prop._dbus_interface
1409
 
                            == if_tag.getAttribute("name")):
 
673
                            == if_tag.getAttribute(u"name")):
1410
674
                    if_tag.appendChild(tag)
1411
 
                # Add annotation tags for properties
1412
 
                for tag in if_tag.getElementsByTagName("property"):
1413
 
                    annots = dict()
1414
 
                    for name, prop in self._get_all_dbus_things(
1415
 
                            "property"):
1416
 
                        if (name == tag.getAttribute("name")
1417
 
                            and prop._dbus_interface
1418
 
                            == if_tag.getAttribute("name")):
1419
 
                            annots.update(getattr(
1420
 
                                prop, "_dbus_annotations", {}))
1421
 
                    for name, value in annots.items():
1422
 
                        ann_tag = document.createElement(
1423
 
                            "annotation")
1424
 
                        ann_tag.setAttribute("name", name)
1425
 
                        ann_tag.setAttribute("value", value)
1426
 
                        tag.appendChild(ann_tag)
1427
675
                # Add the names to the return values for the
1428
676
                # "org.freedesktop.DBus.Properties" methods
1429
 
                if (if_tag.getAttribute("name")
1430
 
                    == "org.freedesktop.DBus.Properties"):
1431
 
                    for cn in if_tag.getElementsByTagName("method"):
1432
 
                        if cn.getAttribute("name") == "Get":
1433
 
                            for arg in cn.getElementsByTagName("arg"):
1434
 
                                if (arg.getAttribute("direction")
1435
 
                                    == "out"):
1436
 
                                    arg.setAttribute("name", "value")
1437
 
                        elif cn.getAttribute("name") == "GetAll":
1438
 
                            for arg in cn.getElementsByTagName("arg"):
1439
 
                                if (arg.getAttribute("direction")
1440
 
                                    == "out"):
1441
 
                                    arg.setAttribute("name", "props")
1442
 
            xmlstring = document.toxml("utf-8")
1443
 
            document.unlink()
1444
 
        except (AttributeError, xml.dom.DOMException,
1445
 
                xml.parsers.expat.ExpatError) as error:
1446
 
            logger.error("Failed to override Introspection method",
1447
 
                         exc_info=error)
1448
 
        return xmlstring
1449
 
 
1450
 
try:
1451
 
    dbus.OBJECT_MANAGER_IFACE
1452
 
except AttributeError:
1453
 
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1454
 
 
1455
 
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1456
 
    """A D-Bus object with an ObjectManager.
1457
 
    
1458
 
    Classes inheriting from this exposes the standard
1459
 
    GetManagedObjects call and the InterfacesAdded and
1460
 
    InterfacesRemoved signals on the standard
1461
 
    "org.freedesktop.DBus.ObjectManager" interface.
1462
 
    
1463
 
    Note: No signals are sent automatically; they must be sent
1464
 
    manually.
1465
 
    """
1466
 
    @dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1467
 
                         out_signature = "a{oa{sa{sv}}}")
1468
 
    def GetManagedObjects(self):
1469
 
        """This function must be overridden"""
1470
 
        raise NotImplementedError()
1471
 
    
1472
 
    @dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1473
 
                         signature = "oa{sa{sv}}")
1474
 
    def InterfacesAdded(self, object_path, interfaces_and_properties):
1475
 
        pass
1476
 
    
1477
 
    @dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1478
 
    def InterfacesRemoved(self, object_path, interfaces):
1479
 
        pass
1480
 
    
1481
 
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1482
 
                         out_signature = "s",
1483
 
                         path_keyword = 'object_path',
1484
 
                         connection_keyword = 'connection')
1485
 
    def Introspect(self, object_path, connection):
1486
 
        """Overloading of standard D-Bus method.
1487
 
        
1488
 
        Override return argument name of GetManagedObjects to be
1489
 
        "objpath_interfaces_and_properties"
1490
 
        """
1491
 
        xmlstring = DBusObjectWithAnnotations.Introspect(self,
1492
 
                                                         object_path,
1493
 
                                                         connection)
1494
 
        try:
1495
 
            document = xml.dom.minidom.parseString(xmlstring)
1496
 
            
1497
 
            for if_tag in document.getElementsByTagName("interface"):
1498
 
                # Fix argument name for the GetManagedObjects method
1499
 
                if (if_tag.getAttribute("name")
1500
 
                                == dbus.OBJECT_MANAGER_IFACE):
1501
 
                    for cn in if_tag.getElementsByTagName("method"):
1502
 
                        if (cn.getAttribute("name")
1503
 
                            == "GetManagedObjects"):
1504
 
                            for arg in cn.getElementsByTagName("arg"):
1505
 
                                if (arg.getAttribute("direction")
1506
 
                                    == "out"):
1507
 
                                    arg.setAttribute(
1508
 
                                        "name",
1509
 
                                        "objpath_interfaces"
1510
 
                                        "_and_properties")
1511
 
            xmlstring = document.toxml("utf-8")
1512
 
            document.unlink()
1513
 
        except (AttributeError, xml.dom.DOMException,
1514
 
                xml.parsers.expat.ExpatError) as error:
1515
 
            logger.error("Failed to override Introspection method",
1516
 
                         exc_info = error)
1517
 
        return xmlstring
1518
 
 
1519
 
def datetime_to_dbus(dt, variant_level=0):
1520
 
    """Convert a UTC datetime.datetime() to a D-Bus type."""
1521
 
    if dt is None:
1522
 
        return dbus.String("", variant_level = variant_level)
1523
 
    return dbus.String(dt.isoformat(), variant_level=variant_level)
1524
 
 
1525
 
 
1526
 
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1527
 
    """A class decorator; applied to a subclass of
1528
 
    dbus.service.Object, it will add alternate D-Bus attributes with
1529
 
    interface names according to the "alt_interface_names" mapping.
1530
 
    Usage:
1531
 
    
1532
 
    @alternate_dbus_interfaces({"org.example.Interface":
1533
 
                                    "net.example.AlternateInterface"})
1534
 
    class SampleDBusObject(dbus.service.Object):
1535
 
        @dbus.service.method("org.example.Interface")
1536
 
        def SampleDBusMethod():
1537
 
            pass
1538
 
    
1539
 
    The above "SampleDBusMethod" on "SampleDBusObject" will be
1540
 
    reachable via two interfaces: "org.example.Interface" and
1541
 
    "net.example.AlternateInterface", the latter of which will have
1542
 
    its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1543
 
    "true", unless "deprecate" is passed with a False value.
1544
 
    
1545
 
    This works for methods and signals, and also for D-Bus properties
1546
 
    (from DBusObjectWithProperties) and interfaces (from the
1547
 
    dbus_interface_annotations decorator).
1548
 
    """
1549
 
    
1550
 
    def wrapper(cls):
1551
 
        for orig_interface_name, alt_interface_name in (
1552
 
                alt_interface_names.items()):
1553
 
            attr = {}
1554
 
            interface_names = set()
1555
 
            # Go though all attributes of the class
1556
 
            for attrname, attribute in inspect.getmembers(cls):
1557
 
                # Ignore non-D-Bus attributes, and D-Bus attributes
1558
 
                # with the wrong interface name
1559
 
                if (not hasattr(attribute, "_dbus_interface")
1560
 
                    or not attribute._dbus_interface.startswith(
1561
 
                        orig_interface_name)):
1562
 
                    continue
1563
 
                # Create an alternate D-Bus interface name based on
1564
 
                # the current name
1565
 
                alt_interface = attribute._dbus_interface.replace(
1566
 
                    orig_interface_name, alt_interface_name)
1567
 
                interface_names.add(alt_interface)
1568
 
                # Is this a D-Bus signal?
1569
 
                if getattr(attribute, "_dbus_is_signal", False):
1570
 
                    # Extract the original non-method undecorated
1571
 
                    # function by black magic
1572
 
                    if sys.version_info.major == 2:
1573
 
                        nonmethod_func = (dict(
1574
 
                            zip(attribute.func_code.co_freevars,
1575
 
                                attribute.__closure__))
1576
 
                                          ["func"].cell_contents)
1577
 
                    else:
1578
 
                        nonmethod_func = (dict(
1579
 
                            zip(attribute.__code__.co_freevars,
1580
 
                                attribute.__closure__))
1581
 
                                          ["func"].cell_contents)
1582
 
                    # Create a new, but exactly alike, function
1583
 
                    # object, and decorate it to be a new D-Bus signal
1584
 
                    # with the alternate D-Bus interface name
1585
 
                    new_function = copy_function(nonmethod_func)
1586
 
                    new_function = (dbus.service.signal(
1587
 
                        alt_interface,
1588
 
                        attribute._dbus_signature)(new_function))
1589
 
                    # Copy annotations, if any
1590
 
                    try:
1591
 
                        new_function._dbus_annotations = dict(
1592
 
                            attribute._dbus_annotations)
1593
 
                    except AttributeError:
1594
 
                        pass
1595
 
                    # Define a creator of a function to call both the
1596
 
                    # original and alternate functions, so both the
1597
 
                    # original and alternate signals gets sent when
1598
 
                    # the function is called
1599
 
                    def fixscope(func1, func2):
1600
 
                        """This function is a scope container to pass
1601
 
                        func1 and func2 to the "call_both" function
1602
 
                        outside of its arguments"""
1603
 
                        
1604
 
                        @functools.wraps(func2)
1605
 
                        def call_both(*args, **kwargs):
1606
 
                            """This function will emit two D-Bus
1607
 
                            signals by calling func1 and func2"""
1608
 
                            func1(*args, **kwargs)
1609
 
                            func2(*args, **kwargs)
1610
 
                        # Make wrapper function look like a D-Bus signal
1611
 
                        for name, attr in inspect.getmembers(func2):
1612
 
                            if name.startswith("_dbus_"):
1613
 
                                setattr(call_both, name, attr)
1614
 
                        
1615
 
                        return call_both
1616
 
                    # Create the "call_both" function and add it to
1617
 
                    # the class
1618
 
                    attr[attrname] = fixscope(attribute, new_function)
1619
 
                # Is this a D-Bus method?
1620
 
                elif getattr(attribute, "_dbus_is_method", False):
1621
 
                    # Create a new, but exactly alike, function
1622
 
                    # object.  Decorate it to be a new D-Bus method
1623
 
                    # with the alternate D-Bus interface name.  Add it
1624
 
                    # to the class.
1625
 
                    attr[attrname] = (
1626
 
                        dbus.service.method(
1627
 
                            alt_interface,
1628
 
                            attribute._dbus_in_signature,
1629
 
                            attribute._dbus_out_signature)
1630
 
                        (copy_function(attribute)))
1631
 
                    # Copy annotations, if any
1632
 
                    try:
1633
 
                        attr[attrname]._dbus_annotations = dict(
1634
 
                            attribute._dbus_annotations)
1635
 
                    except AttributeError:
1636
 
                        pass
1637
 
                # Is this a D-Bus property?
1638
 
                elif getattr(attribute, "_dbus_is_property", False):
1639
 
                    # Create a new, but exactly alike, function
1640
 
                    # object, and decorate it to be a new D-Bus
1641
 
                    # property with the alternate D-Bus interface
1642
 
                    # name.  Add it to the class.
1643
 
                    attr[attrname] = (dbus_service_property(
1644
 
                        alt_interface, attribute._dbus_signature,
1645
 
                        attribute._dbus_access,
1646
 
                        attribute._dbus_get_args_options
1647
 
                        ["byte_arrays"])
1648
 
                                      (copy_function(attribute)))
1649
 
                    # Copy annotations, if any
1650
 
                    try:
1651
 
                        attr[attrname]._dbus_annotations = dict(
1652
 
                            attribute._dbus_annotations)
1653
 
                    except AttributeError:
1654
 
                        pass
1655
 
                # Is this a D-Bus interface?
1656
 
                elif getattr(attribute, "_dbus_is_interface", False):
1657
 
                    # Create a new, but exactly alike, function
1658
 
                    # object.  Decorate it to be a new D-Bus interface
1659
 
                    # with the alternate D-Bus interface name.  Add it
1660
 
                    # to the class.
1661
 
                    attr[attrname] = (
1662
 
                        dbus_interface_annotations(alt_interface)
1663
 
                        (copy_function(attribute)))
1664
 
            if deprecate:
1665
 
                # Deprecate all alternate interfaces
1666
 
                iname="_AlternateDBusNames_interface_annotation{}"
1667
 
                for interface_name in interface_names:
1668
 
                    
1669
 
                    @dbus_interface_annotations(interface_name)
1670
 
                    def func(self):
1671
 
                        return { "org.freedesktop.DBus.Deprecated":
1672
 
                                 "true" }
1673
 
                    # Find an unused name
1674
 
                    for aname in (iname.format(i)
1675
 
                                  for i in itertools.count()):
1676
 
                        if aname not in attr:
1677
 
                            attr[aname] = func
1678
 
                            break
1679
 
            if interface_names:
1680
 
                # Replace the class with a new subclass of it with
1681
 
                # methods, signals, etc. as created above.
1682
 
                if sys.version_info.major == 2:
1683
 
                    cls = type(b"{}Alternate".format(cls.__name__),
1684
 
                               (cls, ), attr)
1685
 
                else:
1686
 
                    cls = type("{}Alternate".format(cls.__name__),
1687
 
                               (cls, ), attr)
1688
 
        return cls
1689
 
    
1690
 
    return wrapper
1691
 
 
1692
 
 
1693
 
@alternate_dbus_interfaces({"se.recompile.Mandos":
1694
 
                            "se.bsnet.fukt.Mandos"})
 
677
                if (if_tag.getAttribute(u"name")
 
678
                    == u"org.freedesktop.DBus.Properties"):
 
679
                    for cn in if_tag.getElementsByTagName(u"method"):
 
680
                        if cn.getAttribute(u"name") == u"Get":
 
681
                            for arg in cn.getElementsByTagName(u"arg"):
 
682
                                if (arg.getAttribute(u"direction")
 
683
                                    == u"out"):
 
684
                                    arg.setAttribute(u"name", u"value")
 
685
                        elif cn.getAttribute(u"name") == u"GetAll":
 
686
                            for arg in cn.getElementsByTagName(u"arg"):
 
687
                                if (arg.getAttribute(u"direction")
 
688
                                    == u"out"):
 
689
                                    arg.setAttribute(u"name", u"props")
 
690
            xmlstring = document.toxml(u"utf-8")
 
691
            document.unlink()
 
692
        except (AttributeError, xml.dom.DOMException,
 
693
                xml.parsers.expat.ExpatError), error:
 
694
            logger.error(u"Failed to override Introspection method",
 
695
                         error)
 
696
        return xmlstring
 
697
 
 
698
 
1695
699
class ClientDBus(Client, DBusObjectWithProperties):
1696
700
    """A Client class using D-Bus
1697
701
    
1699
703
    dbus_object_path: dbus.ObjectPath
1700
704
    bus: dbus.SystemBus()
1701
705
    """
1702
 
    
1703
 
    runtime_expansions = (Client.runtime_expansions
1704
 
                          + ("dbus_object_path", ))
1705
 
    
1706
 
    _interface = "se.recompile.Mandos.Client"
1707
 
    
1708
706
    # dbus.service.Object doesn't use super(), so we can't either.
1709
707
    
1710
708
    def __init__(self, bus = None, *args, **kwargs):
 
709
        self._approvals_pending = 0
1711
710
        self.bus = bus
1712
711
        Client.__init__(self, *args, **kwargs)
1713
712
        # Only now, when this client is initialized, can it show up on
1714
713
        # the D-Bus
1715
 
        client_object_name = str(self.name).translate(
1716
 
            {ord("."): ord("_"),
1717
 
             ord("-"): ord("_")})
1718
 
        self.dbus_object_path = dbus.ObjectPath(
1719
 
            "/clients/" + client_object_name)
 
714
        self.dbus_object_path = (dbus.ObjectPath
 
715
                                 (u"/clients/"
 
716
                                  + self.name.replace(u".", u"_")))
1720
717
        DBusObjectWithProperties.__init__(self, self.bus,
1721
718
                                          self.dbus_object_path)
1722
 
    
1723
 
    def notifychangeproperty(transform_func, dbus_name,
1724
 
                             type_func=lambda x: x,
1725
 
                             variant_level=1,
1726
 
                             invalidate_only=False,
1727
 
                             _interface=_interface):
1728
 
        """ Modify a variable so that it's a property which announces
1729
 
        its changes to DBus.
1730
 
        
1731
 
        transform_fun: Function that takes a value and a variant_level
1732
 
                       and transforms it to a D-Bus type.
1733
 
        dbus_name: D-Bus name of the variable
1734
 
        type_func: Function that transform the value before sending it
1735
 
                   to the D-Bus.  Default: no transform
1736
 
        variant_level: D-Bus variant level.  Default: 1
1737
 
        """
1738
 
        attrname = "_{}".format(dbus_name)
1739
 
        
1740
 
        def setter(self, value):
1741
 
            if hasattr(self, "dbus_object_path"):
1742
 
                if (not hasattr(self, attrname) or
1743
 
                    type_func(getattr(self, attrname, None))
1744
 
                    != type_func(value)):
1745
 
                    if invalidate_only:
1746
 
                        self.PropertiesChanged(
1747
 
                            _interface, dbus.Dictionary(),
1748
 
                            dbus.Array((dbus_name, )))
1749
 
                    else:
1750
 
                        dbus_value = transform_func(
1751
 
                            type_func(value),
1752
 
                            variant_level = variant_level)
1753
 
                        self.PropertyChanged(dbus.String(dbus_name),
1754
 
                                             dbus_value)
1755
 
                        self.PropertiesChanged(
1756
 
                            _interface,
1757
 
                            dbus.Dictionary({ dbus.String(dbus_name):
1758
 
                                              dbus_value }),
1759
 
                            dbus.Array())
1760
 
            setattr(self, attrname, value)
1761
 
        
1762
 
        return property(lambda self: getattr(self, attrname), setter)
1763
 
    
1764
 
    expires = notifychangeproperty(datetime_to_dbus, "Expires")
1765
 
    approvals_pending = notifychangeproperty(dbus.Boolean,
1766
 
                                             "ApprovalPending",
1767
 
                                             type_func = bool)
1768
 
    enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1769
 
    last_enabled = notifychangeproperty(datetime_to_dbus,
1770
 
                                        "LastEnabled")
1771
 
    checker = notifychangeproperty(
1772
 
        dbus.Boolean, "CheckerRunning",
1773
 
        type_func = lambda checker: checker is not None)
1774
 
    last_checked_ok = notifychangeproperty(datetime_to_dbus,
1775
 
                                           "LastCheckedOK")
1776
 
    last_checker_status = notifychangeproperty(dbus.Int16,
1777
 
                                               "LastCheckerStatus")
1778
 
    last_approval_request = notifychangeproperty(
1779
 
        datetime_to_dbus, "LastApprovalRequest")
1780
 
    approved_by_default = notifychangeproperty(dbus.Boolean,
1781
 
                                               "ApprovedByDefault")
1782
 
    approval_delay = notifychangeproperty(
1783
 
        dbus.UInt64, "ApprovalDelay",
1784
 
        type_func = lambda td: td.total_seconds() * 1000)
1785
 
    approval_duration = notifychangeproperty(
1786
 
        dbus.UInt64, "ApprovalDuration",
1787
 
        type_func = lambda td: td.total_seconds() * 1000)
1788
 
    host = notifychangeproperty(dbus.String, "Host")
1789
 
    timeout = notifychangeproperty(
1790
 
        dbus.UInt64, "Timeout",
1791
 
        type_func = lambda td: td.total_seconds() * 1000)
1792
 
    extended_timeout = notifychangeproperty(
1793
 
        dbus.UInt64, "ExtendedTimeout",
1794
 
        type_func = lambda td: td.total_seconds() * 1000)
1795
 
    interval = notifychangeproperty(
1796
 
        dbus.UInt64, "Interval",
1797
 
        type_func = lambda td: td.total_seconds() * 1000)
1798
 
    checker_command = notifychangeproperty(dbus.String, "Checker")
1799
 
    secret = notifychangeproperty(dbus.ByteArray, "Secret",
1800
 
                                  invalidate_only=True)
1801
 
    
1802
 
    del notifychangeproperty
 
719
        
 
720
    def _get_approvals_pending(self):
 
721
        return self._approvals_pending
 
722
    def _set_approvals_pending(self, value):
 
723
        old_value = self._approvals_pending
 
724
        self._approvals_pending = value
 
725
        bval = bool(value)
 
726
        if (hasattr(self, "dbus_object_path")
 
727
            and bval is not bool(old_value)):
 
728
            dbus_bool = dbus.Boolean(bval, variant_level=1)
 
729
            self.PropertyChanged(dbus.String(u"ApprovalPending"),
 
730
                                 dbus_bool)
 
731
 
 
732
    approvals_pending = property(_get_approvals_pending,
 
733
                                 _set_approvals_pending)
 
734
    del _get_approvals_pending, _set_approvals_pending
 
735
    
 
736
    @staticmethod
 
737
    def _datetime_to_dbus(dt, variant_level=0):
 
738
        """Convert a UTC datetime.datetime() to a D-Bus type."""
 
739
        return dbus.String(dt.isoformat(),
 
740
                           variant_level=variant_level)
 
741
    
 
742
    def enable(self):
 
743
        oldstate = getattr(self, u"enabled", False)
 
744
        r = Client.enable(self)
 
745
        if oldstate != self.enabled:
 
746
            # Emit D-Bus signals
 
747
            self.PropertyChanged(dbus.String(u"Enabled"),
 
748
                                 dbus.Boolean(True, variant_level=1))
 
749
            self.PropertyChanged(
 
750
                dbus.String(u"LastEnabled"),
 
751
                self._datetime_to_dbus(self.last_enabled,
 
752
                                       variant_level=1))
 
753
        return r
 
754
    
 
755
    def disable(self, quiet = False):
 
756
        oldstate = getattr(self, u"enabled", False)
 
757
        r = Client.disable(self, quiet=quiet)
 
758
        if not quiet and oldstate != self.enabled:
 
759
            # Emit D-Bus signal
 
760
            self.PropertyChanged(dbus.String(u"Enabled"),
 
761
                                 dbus.Boolean(False, variant_level=1))
 
762
        return r
1803
763
    
1804
764
    def __del__(self, *args, **kwargs):
1805
765
        try:
1806
766
            self.remove_from_connection()
1807
767
        except LookupError:
1808
768
            pass
1809
 
        if hasattr(DBusObjectWithProperties, "__del__"):
 
769
        if hasattr(DBusObjectWithProperties, u"__del__"):
1810
770
            DBusObjectWithProperties.__del__(self, *args, **kwargs)
1811
771
        Client.__del__(self, *args, **kwargs)
1812
772
    
1813
 
    def checker_callback(self, source, condition,
1814
 
                         connection, command, *args, **kwargs):
1815
 
        ret = Client.checker_callback(self, source, condition,
1816
 
                                      connection, command, *args,
1817
 
                                      **kwargs)
1818
 
        exitstatus = self.last_checker_status
1819
 
        if exitstatus >= 0:
 
773
    def checker_callback(self, pid, condition, command,
 
774
                         *args, **kwargs):
 
775
        self.checker_callback_tag = None
 
776
        self.checker = None
 
777
        # Emit D-Bus signal
 
778
        self.PropertyChanged(dbus.String(u"CheckerRunning"),
 
779
                             dbus.Boolean(False, variant_level=1))
 
780
        if os.WIFEXITED(condition):
 
781
            exitstatus = os.WEXITSTATUS(condition)
1820
782
            # Emit D-Bus signal
1821
783
            self.CheckerCompleted(dbus.Int16(exitstatus),
1822
 
                                  # This is specific to GNU libC
1823
 
                                  dbus.Int64(exitstatus << 8),
 
784
                                  dbus.Int64(condition),
1824
785
                                  dbus.String(command))
1825
786
        else:
1826
787
            # Emit D-Bus signal
1827
788
            self.CheckerCompleted(dbus.Int16(-1),
1828
 
                                  dbus.Int64(
1829
 
                                      # This is specific to GNU libC
1830
 
                                      (exitstatus << 8)
1831
 
                                      | self.last_checker_signal),
 
789
                                  dbus.Int64(condition),
1832
790
                                  dbus.String(command))
1833
 
        return ret
 
791
        
 
792
        return Client.checker_callback(self, pid, condition, command,
 
793
                                       *args, **kwargs)
 
794
    
 
795
    def checked_ok(self, *args, **kwargs):
 
796
        r = Client.checked_ok(self, *args, **kwargs)
 
797
        # Emit D-Bus signal
 
798
        self.PropertyChanged(
 
799
            dbus.String(u"LastCheckedOK"),
 
800
            (self._datetime_to_dbus(self.last_checked_ok,
 
801
                                    variant_level=1)))
 
802
        return r
1834
803
    
1835
804
    def start_checker(self, *args, **kwargs):
1836
 
        old_checker_pid = getattr(self.checker, "pid", None)
 
805
        old_checker = self.checker
 
806
        if self.checker is not None:
 
807
            old_checker_pid = self.checker.pid
 
808
        else:
 
809
            old_checker_pid = None
1837
810
        r = Client.start_checker(self, *args, **kwargs)
1838
811
        # Only if new checker process was started
1839
812
        if (self.checker is not None
1840
813
            and old_checker_pid != self.checker.pid):
1841
814
            # Emit D-Bus signal
1842
815
            self.CheckerStarted(self.current_checker_command)
 
816
            self.PropertyChanged(
 
817
                dbus.String(u"CheckerRunning"),
 
818
                dbus.Boolean(True, variant_level=1))
1843
819
        return r
1844
820
    
 
821
    def stop_checker(self, *args, **kwargs):
 
822
        old_checker = getattr(self, u"checker", None)
 
823
        r = Client.stop_checker(self, *args, **kwargs)
 
824
        if (old_checker is not None
 
825
            and getattr(self, u"checker", None) is None):
 
826
            self.PropertyChanged(dbus.String(u"CheckerRunning"),
 
827
                                 dbus.Boolean(False, variant_level=1))
 
828
        return r
 
829
 
1845
830
    def _reset_approved(self):
1846
 
        self.approved = None
 
831
        self._approved = None
1847
832
        return False
1848
833
    
1849
834
    def approve(self, value=True):
1850
 
        self.approved = value
1851
 
        GLib.timeout_add(int(self.approval_duration.total_seconds()
1852
 
                             * 1000), self._reset_approved)
1853
835
        self.send_changedstate()
 
836
        self._approved = value
 
837
        gobject.timeout_add(self._timedelta_to_milliseconds
 
838
                            (self.approval_duration),
 
839
                            self._reset_approved)
 
840
    
1854
841
    
1855
842
    ## D-Bus methods, signals & properties
1856
 
    
1857
 
    ## Interfaces
 
843
    _interface = u"se.bsnet.fukt.Mandos.Client"
1858
844
    
1859
845
    ## Signals
1860
846
    
1861
847
    # CheckerCompleted - signal
1862
 
    @dbus.service.signal(_interface, signature="nxs")
 
848
    @dbus.service.signal(_interface, signature=u"nxs")
1863
849
    def CheckerCompleted(self, exitcode, waitstatus, command):
1864
850
        "D-Bus signal"
1865
851
        pass
1866
852
    
1867
853
    # CheckerStarted - signal
1868
 
    @dbus.service.signal(_interface, signature="s")
 
854
    @dbus.service.signal(_interface, signature=u"s")
1869
855
    def CheckerStarted(self, command):
1870
856
        "D-Bus signal"
1871
857
        pass
1872
858
    
1873
859
    # PropertyChanged - signal
1874
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1875
 
    @dbus.service.signal(_interface, signature="sv")
 
860
    @dbus.service.signal(_interface, signature=u"sv")
1876
861
    def PropertyChanged(self, property, value):
1877
862
        "D-Bus signal"
1878
863
        pass
1887
872
        pass
1888
873
    
1889
874
    # Rejected - signal
1890
 
    @dbus.service.signal(_interface, signature="s")
 
875
    @dbus.service.signal(_interface, signature=u"s")
1891
876
    def Rejected(self, reason):
1892
877
        "D-Bus signal"
1893
878
        pass
1894
879
    
1895
880
    # NeedApproval - signal
1896
 
    @dbus.service.signal(_interface, signature="tb")
 
881
    @dbus.service.signal(_interface, signature=u"tb")
1897
882
    def NeedApproval(self, timeout, default):
1898
883
        "D-Bus signal"
1899
 
        return self.need_approval()
 
884
        pass
1900
885
    
1901
886
    ## Methods
1902
 
    
 
887
 
1903
888
    # Approve - method
1904
 
    @dbus.service.method(_interface, in_signature="b")
 
889
    @dbus.service.method(_interface, in_signature=u"b")
1905
890
    def Approve(self, value):
1906
891
        self.approve(value)
1907
 
    
 
892
 
1908
893
    # CheckedOK - method
1909
894
    @dbus.service.method(_interface)
1910
895
    def CheckedOK(self):
1911
 
        self.checked_ok()
 
896
        return self.checked_ok()
1912
897
    
1913
898
    # Enable - method
1914
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1915
899
    @dbus.service.method(_interface)
1916
900
    def Enable(self):
1917
901
        "D-Bus method"
1918
902
        self.enable()
1919
903
    
1920
904
    # StartChecker - method
1921
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1922
905
    @dbus.service.method(_interface)
1923
906
    def StartChecker(self):
1924
907
        "D-Bus method"
1925
908
        self.start_checker()
1926
909
    
1927
910
    # Disable - method
1928
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1929
911
    @dbus.service.method(_interface)
1930
912
    def Disable(self):
1931
913
        "D-Bus method"
1932
914
        self.disable()
1933
915
    
1934
916
    # StopChecker - method
1935
 
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1936
917
    @dbus.service.method(_interface)
1937
918
    def StopChecker(self):
1938
919
        self.stop_checker()
1940
921
    ## Properties
1941
922
    
1942
923
    # ApprovalPending - property
1943
 
    @dbus_service_property(_interface, signature="b", access="read")
 
924
    @dbus_service_property(_interface, signature=u"b", access=u"read")
1944
925
    def ApprovalPending_dbus_property(self):
1945
926
        return dbus.Boolean(bool(self.approvals_pending))
1946
927
    
1947
928
    # ApprovedByDefault - property
1948
 
    @dbus_service_property(_interface,
1949
 
                           signature="b",
1950
 
                           access="readwrite")
 
929
    @dbus_service_property(_interface, signature=u"b",
 
930
                           access=u"readwrite")
1951
931
    def ApprovedByDefault_dbus_property(self, value=None):
1952
932
        if value is None:       # get
1953
933
            return dbus.Boolean(self.approved_by_default)
1954
934
        self.approved_by_default = bool(value)
 
935
        # Emit D-Bus signal
 
936
        self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
 
937
                             dbus.Boolean(value, variant_level=1))
1955
938
    
1956
939
    # ApprovalDelay - property
1957
 
    @dbus_service_property(_interface,
1958
 
                           signature="t",
1959
 
                           access="readwrite")
 
940
    @dbus_service_property(_interface, signature=u"t",
 
941
                           access=u"readwrite")
1960
942
    def ApprovalDelay_dbus_property(self, value=None):
1961
943
        if value is None:       # get
1962
 
            return dbus.UInt64(self.approval_delay.total_seconds()
1963
 
                               * 1000)
 
944
            return dbus.UInt64(self.approval_delay_milliseconds())
1964
945
        self.approval_delay = datetime.timedelta(0, 0, 0, value)
 
946
        # Emit D-Bus signal
 
947
        self.PropertyChanged(dbus.String(u"ApprovalDelay"),
 
948
                             dbus.UInt64(value, variant_level=1))
1965
949
    
1966
950
    # ApprovalDuration - property
1967
 
    @dbus_service_property(_interface,
1968
 
                           signature="t",
1969
 
                           access="readwrite")
 
951
    @dbus_service_property(_interface, signature=u"t",
 
952
                           access=u"readwrite")
1970
953
    def ApprovalDuration_dbus_property(self, value=None):
1971
954
        if value is None:       # get
1972
 
            return dbus.UInt64(self.approval_duration.total_seconds()
1973
 
                               * 1000)
 
955
            return dbus.UInt64(self._timedelta_to_milliseconds(
 
956
                    self.approval_duration))
1974
957
        self.approval_duration = datetime.timedelta(0, 0, 0, value)
 
958
        # Emit D-Bus signal
 
959
        self.PropertyChanged(dbus.String(u"ApprovalDuration"),
 
960
                             dbus.UInt64(value, variant_level=1))
1975
961
    
1976
962
    # Name - property
1977
 
    @dbus_annotations(
1978
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1979
 
    @dbus_service_property(_interface, signature="s", access="read")
 
963
    @dbus_service_property(_interface, signature=u"s", access=u"read")
1980
964
    def Name_dbus_property(self):
1981
965
        return dbus.String(self.name)
1982
966
    
1983
967
    # Fingerprint - property
1984
 
    @dbus_annotations(
1985
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1986
 
    @dbus_service_property(_interface, signature="s", access="read")
 
968
    @dbus_service_property(_interface, signature=u"s", access=u"read")
1987
969
    def Fingerprint_dbus_property(self):
1988
970
        return dbus.String(self.fingerprint)
1989
971
    
1990
972
    # Host - property
1991
 
    @dbus_service_property(_interface,
1992
 
                           signature="s",
1993
 
                           access="readwrite")
 
973
    @dbus_service_property(_interface, signature=u"s",
 
974
                           access=u"readwrite")
1994
975
    def Host_dbus_property(self, value=None):
1995
976
        if value is None:       # get
1996
977
            return dbus.String(self.host)
1997
 
        self.host = str(value)
 
978
        self.host = value
 
979
        # Emit D-Bus signal
 
980
        self.PropertyChanged(dbus.String(u"Host"),
 
981
                             dbus.String(value, variant_level=1))
1998
982
    
1999
983
    # Created - property
2000
 
    @dbus_annotations(
2001
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2002
 
    @dbus_service_property(_interface, signature="s", access="read")
 
984
    @dbus_service_property(_interface, signature=u"s", access=u"read")
2003
985
    def Created_dbus_property(self):
2004
 
        return datetime_to_dbus(self.created)
 
986
        return dbus.String(self._datetime_to_dbus(self.created))
2005
987
    
2006
988
    # LastEnabled - property
2007
 
    @dbus_service_property(_interface, signature="s", access="read")
 
989
    @dbus_service_property(_interface, signature=u"s", access=u"read")
2008
990
    def LastEnabled_dbus_property(self):
2009
 
        return datetime_to_dbus(self.last_enabled)
 
991
        if self.last_enabled is None:
 
992
            return dbus.String(u"")
 
993
        return dbus.String(self._datetime_to_dbus(self.last_enabled))
2010
994
    
2011
995
    # Enabled - property
2012
 
    @dbus_service_property(_interface,
2013
 
                           signature="b",
2014
 
                           access="readwrite")
 
996
    @dbus_service_property(_interface, signature=u"b",
 
997
                           access=u"readwrite")
2015
998
    def Enabled_dbus_property(self, value=None):
2016
999
        if value is None:       # get
2017
1000
            return dbus.Boolean(self.enabled)
2021
1004
            self.disable()
2022
1005
    
2023
1006
    # LastCheckedOK - property
2024
 
    @dbus_service_property(_interface,
2025
 
                           signature="s",
2026
 
                           access="readwrite")
 
1007
    @dbus_service_property(_interface, signature=u"s",
 
1008
                           access=u"readwrite")
2027
1009
    def LastCheckedOK_dbus_property(self, value=None):
2028
1010
        if value is not None:
2029
1011
            self.checked_ok()
2030
1012
            return
2031
 
        return datetime_to_dbus(self.last_checked_ok)
2032
 
    
2033
 
    # LastCheckerStatus - property
2034
 
    @dbus_service_property(_interface, signature="n", access="read")
2035
 
    def LastCheckerStatus_dbus_property(self):
2036
 
        return dbus.Int16(self.last_checker_status)
2037
 
    
2038
 
    # Expires - property
2039
 
    @dbus_service_property(_interface, signature="s", access="read")
2040
 
    def Expires_dbus_property(self):
2041
 
        return datetime_to_dbus(self.expires)
2042
 
    
2043
 
    # LastApprovalRequest - property
2044
 
    @dbus_service_property(_interface, signature="s", access="read")
2045
 
    def LastApprovalRequest_dbus_property(self):
2046
 
        return datetime_to_dbus(self.last_approval_request)
 
1013
        if self.last_checked_ok is None:
 
1014
            return dbus.String(u"")
 
1015
        return dbus.String(self._datetime_to_dbus(self
 
1016
                                                  .last_checked_ok))
2047
1017
    
2048
1018
    # Timeout - property
2049
 
    @dbus_service_property(_interface,
2050
 
                           signature="t",
2051
 
                           access="readwrite")
 
1019
    @dbus_service_property(_interface, signature=u"t",
 
1020
                           access=u"readwrite")
2052
1021
    def Timeout_dbus_property(self, value=None):
2053
1022
        if value is None:       # get
2054
 
            return dbus.UInt64(self.timeout.total_seconds() * 1000)
2055
 
        old_timeout = self.timeout
 
1023
            return dbus.UInt64(self.timeout_milliseconds())
2056
1024
        self.timeout = datetime.timedelta(0, 0, 0, value)
2057
 
        # Reschedule disabling
2058
 
        if self.enabled:
2059
 
            now = datetime.datetime.utcnow()
2060
 
            self.expires += self.timeout - old_timeout
2061
 
            if self.expires <= now:
2062
 
                # The timeout has passed
2063
 
                self.disable()
2064
 
            else:
2065
 
                if (getattr(self, "disable_initiator_tag", None)
2066
 
                    is None):
2067
 
                    return
2068
 
                GLib.source_remove(self.disable_initiator_tag)
2069
 
                self.disable_initiator_tag = GLib.timeout_add(
2070
 
                    int((self.expires - now).total_seconds() * 1000),
2071
 
                    self.disable)
2072
 
    
2073
 
    # ExtendedTimeout - property
2074
 
    @dbus_service_property(_interface,
2075
 
                           signature="t",
2076
 
                           access="readwrite")
2077
 
    def ExtendedTimeout_dbus_property(self, value=None):
2078
 
        if value is None:       # get
2079
 
            return dbus.UInt64(self.extended_timeout.total_seconds()
2080
 
                               * 1000)
2081
 
        self.extended_timeout = datetime.timedelta(0, 0, 0, value)
 
1025
        # Emit D-Bus signal
 
1026
        self.PropertyChanged(dbus.String(u"Timeout"),
 
1027
                             dbus.UInt64(value, variant_level=1))
 
1028
        if getattr(self, u"disable_initiator_tag", None) is None:
 
1029
            return
 
1030
        # Reschedule timeout
 
1031
        gobject.source_remove(self.disable_initiator_tag)
 
1032
        self.disable_initiator_tag = None
 
1033
        time_to_die = (self.
 
1034
                       _timedelta_to_milliseconds((self
 
1035
                                                   .last_checked_ok
 
1036
                                                   + self.timeout)
 
1037
                                                  - datetime.datetime
 
1038
                                                  .utcnow()))
 
1039
        if time_to_die <= 0:
 
1040
            # The timeout has passed
 
1041
            self.disable()
 
1042
        else:
 
1043
            self.disable_initiator_tag = (gobject.timeout_add
 
1044
                                          (time_to_die, self.disable))
2082
1045
    
2083
1046
    # Interval - property
2084
 
    @dbus_service_property(_interface,
2085
 
                           signature="t",
2086
 
                           access="readwrite")
 
1047
    @dbus_service_property(_interface, signature=u"t",
 
1048
                           access=u"readwrite")
2087
1049
    def Interval_dbus_property(self, value=None):
2088
1050
        if value is None:       # get
2089
 
            return dbus.UInt64(self.interval.total_seconds() * 1000)
 
1051
            return dbus.UInt64(self.interval_milliseconds())
2090
1052
        self.interval = datetime.timedelta(0, 0, 0, value)
2091
 
        if getattr(self, "checker_initiator_tag", None) is None:
 
1053
        # Emit D-Bus signal
 
1054
        self.PropertyChanged(dbus.String(u"Interval"),
 
1055
                             dbus.UInt64(value, variant_level=1))
 
1056
        if getattr(self, u"checker_initiator_tag", None) is None:
2092
1057
            return
2093
 
        if self.enabled:
2094
 
            # Reschedule checker run
2095
 
            GLib.source_remove(self.checker_initiator_tag)
2096
 
            self.checker_initiator_tag = GLib.timeout_add(
2097
 
                value, self.start_checker)
2098
 
            self.start_checker() # Start one now, too
2099
 
    
 
1058
        # Reschedule checker run
 
1059
        gobject.source_remove(self.checker_initiator_tag)
 
1060
        self.checker_initiator_tag = (gobject.timeout_add
 
1061
                                      (value, self.start_checker))
 
1062
        self.start_checker()    # Start one now, too
 
1063
 
2100
1064
    # Checker - property
2101
 
    @dbus_service_property(_interface,
2102
 
                           signature="s",
2103
 
                           access="readwrite")
 
1065
    @dbus_service_property(_interface, signature=u"s",
 
1066
                           access=u"readwrite")
2104
1067
    def Checker_dbus_property(self, value=None):
2105
1068
        if value is None:       # get
2106
1069
            return dbus.String(self.checker_command)
2107
 
        self.checker_command = str(value)
 
1070
        self.checker_command = value
 
1071
        # Emit D-Bus signal
 
1072
        self.PropertyChanged(dbus.String(u"Checker"),
 
1073
                             dbus.String(self.checker_command,
 
1074
                                         variant_level=1))
2108
1075
    
2109
1076
    # CheckerRunning - property
2110
 
    @dbus_service_property(_interface,
2111
 
                           signature="b",
2112
 
                           access="readwrite")
 
1077
    @dbus_service_property(_interface, signature=u"b",
 
1078
                           access=u"readwrite")
2113
1079
    def CheckerRunning_dbus_property(self, value=None):
2114
1080
        if value is None:       # get
2115
1081
            return dbus.Boolean(self.checker is not None)
2119
1085
            self.stop_checker()
2120
1086
    
2121
1087
    # ObjectPath - property
2122
 
    @dbus_annotations(
2123
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2124
 
         "org.freedesktop.DBus.Deprecated": "true"})
2125
 
    @dbus_service_property(_interface, signature="o", access="read")
 
1088
    @dbus_service_property(_interface, signature=u"o", access=u"read")
2126
1089
    def ObjectPath_dbus_property(self):
2127
1090
        return self.dbus_object_path # is already a dbus.ObjectPath
2128
1091
    
2129
1092
    # Secret = property
2130
 
    @dbus_annotations(
2131
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal":
2132
 
         "invalidates"})
2133
 
    @dbus_service_property(_interface,
2134
 
                           signature="ay",
2135
 
                           access="write",
2136
 
                           byte_arrays=True)
 
1093
    @dbus_service_property(_interface, signature=u"ay",
 
1094
                           access=u"write", byte_arrays=True)
2137
1095
    def Secret_dbus_property(self, value):
2138
 
        self.secret = bytes(value)
 
1096
        self.secret = str(value)
2139
1097
    
2140
1098
    del _interface
2141
1099
 
2145
1103
        self._pipe = child_pipe
2146
1104
        self._pipe.send(('init', fpr, address))
2147
1105
        if not self._pipe.recv():
2148
 
            raise KeyError(fpr)
2149
 
    
 
1106
            raise KeyError()
 
1107
 
2150
1108
    def __getattribute__(self, name):
2151
 
        if name == '_pipe':
 
1109
        if(name == '_pipe'):
2152
1110
            return super(ProxyClient, self).__getattribute__(name)
2153
1111
        self._pipe.send(('getattr', name))
2154
1112
        data = self._pipe.recv()
2155
1113
        if data[0] == 'data':
2156
1114
            return data[1]
2157
1115
        if data[0] == 'function':
2158
 
            
2159
1116
            def func(*args, **kwargs):
2160
1117
                self._pipe.send(('funcall', name, args, kwargs))
2161
1118
                return self._pipe.recv()[1]
2162
 
            
2163
1119
            return func
2164
 
    
 
1120
 
2165
1121
    def __setattr__(self, name, value):
2166
 
        if name == '_pipe':
 
1122
        if(name == '_pipe'):
2167
1123
            return super(ProxyClient, self).__setattr__(name, value)
2168
1124
        self._pipe.send(('setattr', name, value))
2169
1125
 
2176
1132
    
2177
1133
    def handle(self):
2178
1134
        with contextlib.closing(self.server.child_pipe) as child_pipe:
2179
 
            logger.info("TCP connection from: %s",
2180
 
                        str(self.client_address))
2181
 
            logger.debug("Pipe FD: %d",
 
1135
            logger.info(u"TCP connection from: %s",
 
1136
                        unicode(self.client_address))
 
1137
            logger.debug(u"Pipe FD: %d",
2182
1138
                         self.server.child_pipe.fileno())
2183
 
            
2184
 
            session = gnutls.ClientSession(self.request)
2185
 
            
2186
 
            #priority = ':'.join(("NONE", "+VERS-TLS1.1",
2187
 
            #                      "+AES-256-CBC", "+SHA1",
2188
 
            #                      "+COMP-NULL", "+CTYPE-OPENPGP",
2189
 
            #                      "+DHE-DSS"))
 
1139
 
 
1140
            session = (gnutls.connection
 
1141
                       .ClientSession(self.request,
 
1142
                                      gnutls.connection
 
1143
                                      .X509Credentials()))
 
1144
 
 
1145
            # Note: gnutls.connection.X509Credentials is really a
 
1146
            # generic GnuTLS certificate credentials object so long as
 
1147
            # no X.509 keys are added to it.  Therefore, we can use it
 
1148
            # here despite using OpenPGP certificates.
 
1149
 
 
1150
            #priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
 
1151
            #                      u"+AES-256-CBC", u"+SHA1",
 
1152
            #                      u"+COMP-NULL", u"+CTYPE-OPENPGP",
 
1153
            #                      u"+DHE-DSS"))
2190
1154
            # Use a fallback default, since this MUST be set.
2191
1155
            priority = self.server.gnutls_priority
2192
1156
            if priority is None:
2193
 
                priority = "NORMAL"
2194
 
            gnutls.priority_set_direct(session._c_object,
2195
 
                                       priority.encode("utf-8"),
2196
 
                                       None)
2197
 
            
 
1157
                priority = u"NORMAL"
 
1158
            (gnutls.library.functions
 
1159
             .gnutls_priority_set_direct(session._c_object,
 
1160
                                         priority, None))
 
1161
 
2198
1162
            # Start communication using the Mandos protocol
2199
1163
            # Get protocol number
2200
1164
            line = self.request.makefile().readline()
2201
 
            logger.debug("Protocol version: %r", line)
 
1165
            logger.debug(u"Protocol version: %r", line)
2202
1166
            try:
2203
1167
                if int(line.strip().split()[0]) > 1:
2204
 
                    raise RuntimeError(line)
2205
 
            except (ValueError, IndexError, RuntimeError) as error:
2206
 
                logger.error("Unknown protocol version: %s", error)
 
1168
                    raise RuntimeError
 
1169
            except (ValueError, IndexError, RuntimeError), error:
 
1170
                logger.error(u"Unknown protocol version: %s", error)
2207
1171
                return
2208
 
            
 
1172
 
2209
1173
            # Start GnuTLS connection
2210
1174
            try:
2211
1175
                session.handshake()
2212
 
            except gnutls.Error as error:
2213
 
                logger.warning("Handshake failed: %s", error)
 
1176
            except gnutls.errors.GNUTLSError, error:
 
1177
                logger.warning(u"Handshake failed: %s", error)
2214
1178
                # Do not run session.bye() here: the session is not
2215
1179
                # established.  Just abandon the request.
2216
1180
                return
2217
 
            logger.debug("Handshake succeeded")
2218
 
            
 
1181
            logger.debug(u"Handshake succeeded")
 
1182
 
2219
1183
            approval_required = False
2220
1184
            try:
2221
1185
                try:
2222
 
                    fpr = self.fingerprint(
2223
 
                        self.peer_certificate(session))
2224
 
                except (TypeError, gnutls.Error) as error:
2225
 
                    logger.warning("Bad certificate: %s", error)
 
1186
                    fpr = self.fingerprint(self.peer_certificate
 
1187
                                           (session))
 
1188
                except (TypeError, gnutls.errors.GNUTLSError), error:
 
1189
                    logger.warning(u"Bad certificate: %s", error)
2226
1190
                    return
2227
 
                logger.debug("Fingerprint: %s", fpr)
2228
 
                
 
1191
                logger.debug(u"Fingerprint: %s", fpr)
 
1192
 
2229
1193
                try:
2230
1194
                    client = ProxyClient(child_pipe, fpr,
2231
1195
                                         self.client_address)
2239
1203
                
2240
1204
                while True:
2241
1205
                    if not client.enabled:
2242
 
                        logger.info("Client %s is disabled",
2243
 
                                    client.name)
 
1206
                        logger.warning(u"Client %s is disabled",
 
1207
                                       client.name)
2244
1208
                        if self.server.use_dbus:
2245
1209
                            # Emit D-Bus signal
2246
 
                            client.Rejected("Disabled")
 
1210
                            client.Rejected("Disabled")                    
2247
1211
                        return
2248
1212
                    
2249
 
                    if client.approved or not client.approval_delay:
 
1213
                    if client._approved or not client.approval_delay:
2250
1214
                        #We are approved or approval is disabled
2251
1215
                        break
2252
 
                    elif client.approved is None:
2253
 
                        logger.info("Client %s needs approval",
 
1216
                    elif client._approved is None:
 
1217
                        logger.info(u"Client %s needs approval",
2254
1218
                                    client.name)
2255
1219
                        if self.server.use_dbus:
2256
1220
                            # Emit D-Bus signal
2257
1221
                            client.NeedApproval(
2258
 
                                client.approval_delay.total_seconds()
2259
 
                                * 1000, client.approved_by_default)
 
1222
                                client.approval_delay_milliseconds(),
 
1223
                                client.approved_by_default)
2260
1224
                    else:
2261
 
                        logger.warning("Client %s was not approved",
 
1225
                        logger.warning(u"Client %s was not approved",
2262
1226
                                       client.name)
2263
1227
                        if self.server.use_dbus:
2264
1228
                            # Emit D-Bus signal
2266
1230
                        return
2267
1231
                    
2268
1232
                    #wait until timeout or approved
 
1233
                    #x = float(client._timedelta_to_milliseconds(delay))
2269
1234
                    time = datetime.datetime.now()
2270
1235
                    client.changedstate.acquire()
2271
 
                    client.changedstate.wait(delay.total_seconds())
 
1236
                    client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2272
1237
                    client.changedstate.release()
2273
1238
                    time2 = datetime.datetime.now()
2274
1239
                    if (time2 - time) >= delay:
2278
1243
                                           client.name)
2279
1244
                            if self.server.use_dbus:
2280
1245
                                # Emit D-Bus signal
2281
 
                                client.Rejected("Approval timed out")
 
1246
                                client.Rejected("Timed out")
2282
1247
                            return
2283
1248
                        else:
2284
1249
                            break
2285
1250
                    else:
2286
1251
                        delay -= time2 - time
2287
1252
                
2288
 
                try:
2289
 
                    session.send(client.secret)
2290
 
                except gnutls.Error as error:
2291
 
                    logger.warning("gnutls send failed",
2292
 
                                   exc_info = error)
2293
 
                    return
2294
 
                
2295
 
                logger.info("Sending secret to %s", client.name)
2296
 
                # bump the timeout using extended_timeout
2297
 
                client.bump_timeout(client.extended_timeout)
 
1253
                sent_size = 0
 
1254
                while sent_size < len(client.secret):
 
1255
                    try:
 
1256
                        sent = session.send(client.secret[sent_size:])
 
1257
                    except (gnutls.errors.GNUTLSError), error:
 
1258
                        logger.warning("gnutls send failed")
 
1259
                        return
 
1260
                    logger.debug(u"Sent: %d, remaining: %d",
 
1261
                                 sent, len(client.secret)
 
1262
                                 - (sent_size + sent))
 
1263
                    sent_size += sent
 
1264
 
 
1265
                logger.info(u"Sending secret to %s", client.name)
 
1266
                # bump the timeout as if seen
 
1267
                client.checked_ok()
2298
1268
                if self.server.use_dbus:
2299
1269
                    # Emit D-Bus signal
2300
1270
                    client.GotSecret()
2304
1274
                    client.approvals_pending -= 1
2305
1275
                try:
2306
1276
                    session.bye()
2307
 
                except gnutls.Error as error:
2308
 
                    logger.warning("GnuTLS bye failed",
2309
 
                                   exc_info=error)
 
1277
                except (gnutls.errors.GNUTLSError), error:
 
1278
                    logger.warning("GnuTLS bye failed")
2310
1279
    
2311
1280
    @staticmethod
2312
1281
    def peer_certificate(session):
2313
1282
        "Return the peer's OpenPGP certificate as a bytestring"
2314
1283
        # If not an OpenPGP certificate...
2315
 
        if (gnutls.certificate_type_get(session._c_object)
2316
 
            != gnutls.CRT_OPENPGP):
2317
 
            # ...return invalid data
2318
 
            return b""
 
1284
        if (gnutls.library.functions
 
1285
            .gnutls_certificate_type_get(session._c_object)
 
1286
            != gnutls.library.constants.GNUTLS_CRT_OPENPGP):
 
1287
            # ...do the normal thing
 
1288
            return session.peer_certificate
2319
1289
        list_size = ctypes.c_uint(1)
2320
 
        cert_list = (gnutls.certificate_get_peers
 
1290
        cert_list = (gnutls.library.functions
 
1291
                     .gnutls_certificate_get_peers
2321
1292
                     (session._c_object, ctypes.byref(list_size)))
2322
1293
        if not bool(cert_list) and list_size.value != 0:
2323
 
            raise gnutls.Error("error getting peer certificate")
 
1294
            raise gnutls.errors.GNUTLSError(u"error getting peer"
 
1295
                                            u" certificate")
2324
1296
        if list_size.value == 0:
2325
1297
            return None
2326
1298
        cert = cert_list[0]
2330
1302
    def fingerprint(openpgp):
2331
1303
        "Convert an OpenPGP bytestring to a hexdigit fingerprint"
2332
1304
        # New GnuTLS "datum" with the OpenPGP public key
2333
 
        datum = gnutls.datum_t(
2334
 
            ctypes.cast(ctypes.c_char_p(openpgp),
2335
 
                        ctypes.POINTER(ctypes.c_ubyte)),
2336
 
            ctypes.c_uint(len(openpgp)))
 
1305
        datum = (gnutls.library.types
 
1306
                 .gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
 
1307
                                             ctypes.POINTER
 
1308
                                             (ctypes.c_ubyte)),
 
1309
                                 ctypes.c_uint(len(openpgp))))
2337
1310
        # New empty GnuTLS certificate
2338
 
        crt = gnutls.openpgp_crt_t()
2339
 
        gnutls.openpgp_crt_init(ctypes.byref(crt))
 
1311
        crt = gnutls.library.types.gnutls_openpgp_crt_t()
 
1312
        (gnutls.library.functions
 
1313
         .gnutls_openpgp_crt_init(ctypes.byref(crt)))
2340
1314
        # Import the OpenPGP public key into the certificate
2341
 
        gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2342
 
                                  gnutls.OPENPGP_FMT_RAW)
 
1315
        (gnutls.library.functions
 
1316
         .gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
 
1317
                                    gnutls.library.constants
 
1318
                                    .GNUTLS_OPENPGP_FMT_RAW))
2343
1319
        # Verify the self signature in the key
2344
1320
        crtverify = ctypes.c_uint()
2345
 
        gnutls.openpgp_crt_verify_self(crt, 0,
2346
 
                                       ctypes.byref(crtverify))
 
1321
        (gnutls.library.functions
 
1322
         .gnutls_openpgp_crt_verify_self(crt, 0,
 
1323
                                         ctypes.byref(crtverify)))
2347
1324
        if crtverify.value != 0:
2348
 
            gnutls.openpgp_crt_deinit(crt)
2349
 
            raise gnutls.CertificateSecurityError("Verify failed")
 
1325
            gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
 
1326
            raise (gnutls.errors.CertificateSecurityError
 
1327
                   (u"Verify failed"))
2350
1328
        # New buffer for the fingerprint
2351
1329
        buf = ctypes.create_string_buffer(20)
2352
1330
        buf_len = ctypes.c_size_t()
2353
1331
        # Get the fingerprint from the certificate into the buffer
2354
 
        gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2355
 
                                           ctypes.byref(buf_len))
 
1332
        (gnutls.library.functions
 
1333
         .gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
 
1334
                                             ctypes.byref(buf_len)))
2356
1335
        # Deinit the certificate
2357
 
        gnutls.openpgp_crt_deinit(crt)
 
1336
        gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2358
1337
        # Convert the buffer to a Python bytestring
2359
1338
        fpr = ctypes.string_at(buf, buf_len.value)
2360
1339
        # Convert the bytestring to hexadecimal notation
2361
 
        hex_fpr = binascii.hexlify(fpr).upper()
 
1340
        hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2362
1341
        return hex_fpr
2363
1342
 
2364
1343
 
2365
1344
class MultiprocessingMixIn(object):
2366
1345
    """Like socketserver.ThreadingMixIn, but with multiprocessing"""
2367
 
    
2368
1346
    def sub_process_main(self, request, address):
2369
1347
        try:
2370
1348
            self.finish_request(request, address)
2371
 
        except Exception:
 
1349
        except:
2372
1350
            self.handle_error(request, address)
2373
1351
        self.close_request(request)
2374
 
    
 
1352
            
2375
1353
    def process_request(self, request, address):
2376
1354
        """Start a new process to process the request."""
2377
 
        proc = multiprocessing.Process(target = self.sub_process_main,
2378
 
                                       args = (request, address))
2379
 
        proc.start()
2380
 
        return proc
2381
 
 
 
1355
        multiprocessing.Process(target = self.sub_process_main,
 
1356
                                args = (request, address)).start()
2382
1357
 
2383
1358
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2384
1359
    """ adds a pipe to the MixIn """
2385
 
    
2386
1360
    def process_request(self, request, client_address):
2387
1361
        """Overrides and wraps the original process_request().
2388
1362
        
2389
1363
        This function creates a new pipe in self.pipe
2390
1364
        """
2391
1365
        parent_pipe, self.child_pipe = multiprocessing.Pipe()
2392
 
        
2393
 
        proc = MultiprocessingMixIn.process_request(self, request,
2394
 
                                                    client_address)
 
1366
 
 
1367
        super(MultiprocessingMixInWithPipe,
 
1368
              self).process_request(request, client_address)
2395
1369
        self.child_pipe.close()
2396
 
        self.add_pipe(parent_pipe, proc)
2397
 
    
2398
 
    def add_pipe(self, parent_pipe, proc):
 
1370
        self.add_pipe(parent_pipe)
 
1371
 
 
1372
    def add_pipe(self, parent_pipe):
2399
1373
        """Dummy function; override as necessary"""
2400
 
        raise NotImplementedError()
2401
 
 
 
1374
        pass
2402
1375
 
2403
1376
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2404
1377
                     socketserver.TCPServer, object):
2409
1382
        interface:      None or a network interface name (string)
2410
1383
        use_ipv6:       Boolean; to use IPv6 or not
2411
1384
    """
2412
 
    
2413
1385
    def __init__(self, server_address, RequestHandlerClass,
2414
 
                 interface=None,
2415
 
                 use_ipv6=True,
2416
 
                 socketfd=None):
2417
 
        """If socketfd is set, use that file descriptor instead of
2418
 
        creating a new one with socket.socket().
2419
 
        """
 
1386
                 interface=None, use_ipv6=True):
2420
1387
        self.interface = interface
2421
1388
        if use_ipv6:
2422
1389
            self.address_family = socket.AF_INET6
2423
 
        if socketfd is not None:
2424
 
            # Save the file descriptor
2425
 
            self.socketfd = socketfd
2426
 
            # Save the original socket.socket() function
2427
 
            self.socket_socket = socket.socket
2428
 
            # To implement --socket, we monkey patch socket.socket.
2429
 
            # 
2430
 
            # (When socketserver.TCPServer is a new-style class, we
2431
 
            # could make self.socket into a property instead of monkey
2432
 
            # patching socket.socket.)
2433
 
            # 
2434
 
            # Create a one-time-only replacement for socket.socket()
2435
 
            @functools.wraps(socket.socket)
2436
 
            def socket_wrapper(*args, **kwargs):
2437
 
                # Restore original function so subsequent calls are
2438
 
                # not affected.
2439
 
                socket.socket = self.socket_socket
2440
 
                del self.socket_socket
2441
 
                # This time only, return a new socket object from the
2442
 
                # saved file descriptor.
2443
 
                return socket.fromfd(self.socketfd, *args, **kwargs)
2444
 
            # Replace socket.socket() function with wrapper
2445
 
            socket.socket = socket_wrapper
2446
 
        # The socketserver.TCPServer.__init__ will call
2447
 
        # socket.socket(), which might be our replacement,
2448
 
        # socket_wrapper(), if socketfd was set.
2449
1390
        socketserver.TCPServer.__init__(self, server_address,
2450
1391
                                        RequestHandlerClass)
2451
 
    
2452
1392
    def server_bind(self):
2453
1393
        """This overrides the normal server_bind() function
2454
1394
        to bind to an interface if one was specified, and also NOT to
2455
1395
        bind to an address or port if they were not specified."""
2456
 
        global SO_BINDTODEVICE
2457
1396
        if self.interface is not None:
2458
1397
            if SO_BINDTODEVICE is None:
2459
 
                # Fall back to a hard-coded value which seems to be
2460
 
                # common enough.
2461
 
                logger.warning("SO_BINDTODEVICE not found, trying 25")
2462
 
                SO_BINDTODEVICE = 25
2463
 
            try:
2464
 
                self.socket.setsockopt(
2465
 
                    socket.SOL_SOCKET, SO_BINDTODEVICE,
2466
 
                    (self.interface + "\0").encode("utf-8"))
2467
 
            except socket.error as error:
2468
 
                if error.errno == errno.EPERM:
2469
 
                    logger.error("No permission to bind to"
2470
 
                                 " interface %s", self.interface)
2471
 
                elif error.errno == errno.ENOPROTOOPT:
2472
 
                    logger.error("SO_BINDTODEVICE not available;"
2473
 
                                 " cannot bind to interface %s",
2474
 
                                 self.interface)
2475
 
                elif error.errno == errno.ENODEV:
2476
 
                    logger.error("Interface %s does not exist,"
2477
 
                                 " cannot bind", self.interface)
2478
 
                else:
2479
 
                    raise
 
1398
                logger.error(u"SO_BINDTODEVICE does not exist;"
 
1399
                             u" cannot bind to interface %s",
 
1400
                             self.interface)
 
1401
            else:
 
1402
                try:
 
1403
                    self.socket.setsockopt(socket.SOL_SOCKET,
 
1404
                                           SO_BINDTODEVICE,
 
1405
                                           str(self.interface
 
1406
                                               + u'\0'))
 
1407
                except socket.error, error:
 
1408
                    if error[0] == errno.EPERM:
 
1409
                        logger.error(u"No permission to"
 
1410
                                     u" bind to interface %s",
 
1411
                                     self.interface)
 
1412
                    elif error[0] == errno.ENOPROTOOPT:
 
1413
                        logger.error(u"SO_BINDTODEVICE not available;"
 
1414
                                     u" cannot bind to interface %s",
 
1415
                                     self.interface)
 
1416
                    else:
 
1417
                        raise
2480
1418
        # Only bind(2) the socket if we really need to.
2481
1419
        if self.server_address[0] or self.server_address[1]:
2482
1420
            if not self.server_address[0]:
2483
1421
                if self.address_family == socket.AF_INET6:
2484
 
                    any_address = "::" # in6addr_any
 
1422
                    any_address = u"::" # in6addr_any
2485
1423
                else:
2486
 
                    any_address = "0.0.0.0" # INADDR_ANY
 
1424
                    any_address = socket.INADDR_ANY
2487
1425
                self.server_address = (any_address,
2488
1426
                                       self.server_address[1])
2489
1427
            elif not self.server_address[1]:
2490
 
                self.server_address = (self.server_address[0], 0)
 
1428
                self.server_address = (self.server_address[0],
 
1429
                                       0)
2491
1430
#                 if self.interface:
2492
1431
#                     self.server_address = (self.server_address[0],
2493
1432
#                                            0, # port
2505
1444
        gnutls_priority GnuTLS priority string
2506
1445
        use_dbus:       Boolean; to emit D-Bus signals or not
2507
1446
    
2508
 
    Assumes a GLib.MainLoop event loop.
 
1447
    Assumes a gobject.MainLoop event loop.
2509
1448
    """
2510
 
    
2511
1449
    def __init__(self, server_address, RequestHandlerClass,
2512
 
                 interface=None,
2513
 
                 use_ipv6=True,
2514
 
                 clients=None,
2515
 
                 gnutls_priority=None,
2516
 
                 use_dbus=True,
2517
 
                 socketfd=None):
 
1450
                 interface=None, use_ipv6=True, clients=None,
 
1451
                 gnutls_priority=None, use_dbus=True):
2518
1452
        self.enabled = False
2519
1453
        self.clients = clients
2520
1454
        if self.clients is None:
2521
 
            self.clients = {}
 
1455
            self.clients = set()
2522
1456
        self.use_dbus = use_dbus
2523
1457
        self.gnutls_priority = gnutls_priority
2524
1458
        IPv6_TCPServer.__init__(self, server_address,
2525
1459
                                RequestHandlerClass,
2526
1460
                                interface = interface,
2527
 
                                use_ipv6 = use_ipv6,
2528
 
                                socketfd = socketfd)
2529
 
    
 
1461
                                use_ipv6 = use_ipv6)
2530
1462
    def server_activate(self):
2531
1463
        if self.enabled:
2532
1464
            return socketserver.TCPServer.server_activate(self)
2533
 
    
2534
1465
    def enable(self):
2535
1466
        self.enabled = True
2536
 
    
2537
 
    def add_pipe(self, parent_pipe, proc):
 
1467
    def add_pipe(self, parent_pipe):
2538
1468
        # Call "handle_ipc" for both data and EOF events
2539
 
        GLib.io_add_watch(
2540
 
            parent_pipe.fileno(),
2541
 
            GLib.IO_IN | GLib.IO_HUP,
2542
 
            functools.partial(self.handle_ipc,
2543
 
                              parent_pipe = parent_pipe,
2544
 
                              proc = proc))
2545
 
    
2546
 
    def handle_ipc(self, source, condition,
2547
 
                   parent_pipe=None,
2548
 
                   proc = None,
 
1469
        gobject.io_add_watch(parent_pipe.fileno(),
 
1470
                             gobject.IO_IN | gobject.IO_HUP,
 
1471
                             functools.partial(self.handle_ipc,
 
1472
                                               parent_pipe = parent_pipe))
 
1473
        
 
1474
    def handle_ipc(self, source, condition, parent_pipe=None,
2549
1475
                   client_object=None):
2550
 
        # error, or the other end of multiprocessing.Pipe has closed
2551
 
        if condition & (GLib.IO_ERR | GLib.IO_HUP):
2552
 
            # Wait for other process to exit
2553
 
            proc.join()
 
1476
        condition_names = {
 
1477
            gobject.IO_IN: u"IN",   # There is data to read.
 
1478
            gobject.IO_OUT: u"OUT", # Data can be written (without
 
1479
                                    # blocking).
 
1480
            gobject.IO_PRI: u"PRI", # There is urgent data to read.
 
1481
            gobject.IO_ERR: u"ERR", # Error condition.
 
1482
            gobject.IO_HUP: u"HUP"  # Hung up (the connection has been
 
1483
                                    # broken, usually for pipes and
 
1484
                                    # sockets).
 
1485
            }
 
1486
        conditions_string = ' | '.join(name
 
1487
                                       for cond, name in
 
1488
                                       condition_names.iteritems()
 
1489
                                       if cond & condition)
 
1490
        logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
 
1491
                     conditions_string)
 
1492
 
 
1493
        # error or the other end of multiprocessing.Pipe has closed
 
1494
        if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2554
1495
            return False
2555
1496
        
2556
1497
        # Read a request from the child
2557
1498
        request = parent_pipe.recv()
 
1499
        logger.debug(u"IPC request: %s", repr(request))
2558
1500
        command = request[0]
2559
1501
        
2560
1502
        if command == 'init':
2561
1503
            fpr = request[1]
2562
1504
            address = request[2]
2563
1505
            
2564
 
            for c in self.clients.values():
 
1506
            for c in self.clients:
2565
1507
                if c.fingerprint == fpr:
2566
1508
                    client = c
2567
1509
                    break
2568
1510
            else:
2569
 
                logger.info("Client not found for fingerprint: %s, ad"
2570
 
                            "dress: %s", fpr, address)
 
1511
                logger.warning(u"Client not found for fingerprint: %s, ad"
 
1512
                               u"dress: %s", fpr, address)
2571
1513
                if self.use_dbus:
2572
1514
                    # Emit D-Bus signal
2573
 
                    mandos_dbus_service.ClientNotFound(fpr,
2574
 
                                                       address[0])
 
1515
                    mandos_dbus_service.ClientNotFound(fpr, address)
2575
1516
                parent_pipe.send(False)
2576
1517
                return False
2577
1518
            
2578
 
            GLib.io_add_watch(
2579
 
                parent_pipe.fileno(),
2580
 
                GLib.IO_IN | GLib.IO_HUP,
2581
 
                functools.partial(self.handle_ipc,
2582
 
                                  parent_pipe = parent_pipe,
2583
 
                                  proc = proc,
2584
 
                                  client_object = client))
 
1519
            gobject.io_add_watch(parent_pipe.fileno(),
 
1520
                                 gobject.IO_IN | gobject.IO_HUP,
 
1521
                                 functools.partial(self.handle_ipc,
 
1522
                                                   parent_pipe = parent_pipe,
 
1523
                                                   client_object = client))
2585
1524
            parent_pipe.send(True)
2586
 
            # remove the old hook in favor of the new above hook on
2587
 
            # same fileno
 
1525
            # remove the old hook in favor of the new above hook on same fileno
2588
1526
            return False
2589
1527
        if command == 'funcall':
2590
1528
            funcname = request[1]
2591
1529
            args = request[2]
2592
1530
            kwargs = request[3]
2593
1531
            
2594
 
            parent_pipe.send(('data', getattr(client_object,
2595
 
                                              funcname)(*args,
2596
 
                                                        **kwargs)))
2597
 
        
 
1532
            parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
 
1533
 
2598
1534
        if command == 'getattr':
2599
1535
            attrname = request[1]
2600
 
            if isinstance(client_object.__getattribute__(attrname),
2601
 
                          collections.Callable):
2602
 
                parent_pipe.send(('function', ))
 
1536
            if callable(client_object.__getattribute__(attrname)):
 
1537
                parent_pipe.send(('function',))
2603
1538
            else:
2604
 
                parent_pipe.send((
2605
 
                    'data', client_object.__getattribute__(attrname)))
 
1539
                parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2606
1540
        
2607
1541
        if command == 'setattr':
2608
1542
            attrname = request[1]
2609
1543
            value = request[2]
2610
1544
            setattr(client_object, attrname, value)
2611
 
        
 
1545
 
2612
1546
        return True
2613
1547
 
2614
1548
 
2615
 
def rfc3339_duration_to_delta(duration):
2616
 
    """Parse an RFC 3339 "duration" and return a datetime.timedelta
2617
 
    
2618
 
    >>> rfc3339_duration_to_delta("P7D")
2619
 
    datetime.timedelta(7)
2620
 
    >>> rfc3339_duration_to_delta("PT60S")
2621
 
    datetime.timedelta(0, 60)
2622
 
    >>> rfc3339_duration_to_delta("PT60M")
2623
 
    datetime.timedelta(0, 3600)
2624
 
    >>> rfc3339_duration_to_delta("PT24H")
2625
 
    datetime.timedelta(1)
2626
 
    >>> rfc3339_duration_to_delta("P1W")
2627
 
    datetime.timedelta(7)
2628
 
    >>> rfc3339_duration_to_delta("PT5M30S")
2629
 
    datetime.timedelta(0, 330)
2630
 
    >>> rfc3339_duration_to_delta("P1DT3M20S")
2631
 
    datetime.timedelta(1, 200)
2632
 
    """
2633
 
    
2634
 
    # Parsing an RFC 3339 duration with regular expressions is not
2635
 
    # possible - there would have to be multiple places for the same
2636
 
    # values, like seconds.  The current code, while more esoteric, is
2637
 
    # cleaner without depending on a parsing library.  If Python had a
2638
 
    # built-in library for parsing we would use it, but we'd like to
2639
 
    # avoid excessive use of external libraries.
2640
 
    
2641
 
    # New type for defining tokens, syntax, and semantics all-in-one
2642
 
    Token = collections.namedtuple("Token", (
2643
 
        "regexp",  # To match token; if "value" is not None, must have
2644
 
                   # a "group" containing digits
2645
 
        "value",   # datetime.timedelta or None
2646
 
        "followers"))           # Tokens valid after this token
2647
 
    # RFC 3339 "duration" tokens, syntax, and semantics; taken from
2648
 
    # the "duration" ABNF definition in RFC 3339, Appendix A.
2649
 
    token_end = Token(re.compile(r"$"), None, frozenset())
2650
 
    token_second = Token(re.compile(r"(\d+)S"),
2651
 
                         datetime.timedelta(seconds=1),
2652
 
                         frozenset((token_end, )))
2653
 
    token_minute = Token(re.compile(r"(\d+)M"),
2654
 
                         datetime.timedelta(minutes=1),
2655
 
                         frozenset((token_second, token_end)))
2656
 
    token_hour = Token(re.compile(r"(\d+)H"),
2657
 
                       datetime.timedelta(hours=1),
2658
 
                       frozenset((token_minute, token_end)))
2659
 
    token_time = Token(re.compile(r"T"),
2660
 
                       None,
2661
 
                       frozenset((token_hour, token_minute,
2662
 
                                  token_second)))
2663
 
    token_day = Token(re.compile(r"(\d+)D"),
2664
 
                      datetime.timedelta(days=1),
2665
 
                      frozenset((token_time, token_end)))
2666
 
    token_month = Token(re.compile(r"(\d+)M"),
2667
 
                        datetime.timedelta(weeks=4),
2668
 
                        frozenset((token_day, token_end)))
2669
 
    token_year = Token(re.compile(r"(\d+)Y"),
2670
 
                       datetime.timedelta(weeks=52),
2671
 
                       frozenset((token_month, token_end)))
2672
 
    token_week = Token(re.compile(r"(\d+)W"),
2673
 
                       datetime.timedelta(weeks=1),
2674
 
                       frozenset((token_end, )))
2675
 
    token_duration = Token(re.compile(r"P"), None,
2676
 
                           frozenset((token_year, token_month,
2677
 
                                      token_day, token_time,
2678
 
                                      token_week)))
2679
 
    # Define starting values
2680
 
    value = datetime.timedelta() # Value so far
2681
 
    found_token = None
2682
 
    followers = frozenset((token_duration, )) # Following valid tokens
2683
 
    s = duration                # String left to parse
2684
 
    # Loop until end token is found
2685
 
    while found_token is not token_end:
2686
 
        # Search for any currently valid tokens
2687
 
        for token in followers:
2688
 
            match = token.regexp.match(s)
2689
 
            if match is not None:
2690
 
                # Token found
2691
 
                if token.value is not None:
2692
 
                    # Value found, parse digits
2693
 
                    factor = int(match.group(1), 10)
2694
 
                    # Add to value so far
2695
 
                    value += factor * token.value
2696
 
                # Strip token from string
2697
 
                s = token.regexp.sub("", s, 1)
2698
 
                # Go to found token
2699
 
                found_token = token
2700
 
                # Set valid next tokens
2701
 
                followers = found_token.followers
2702
 
                break
2703
 
        else:
2704
 
            # No currently valid tokens were found
2705
 
            raise ValueError("Invalid RFC 3339 duration: {!r}"
2706
 
                             .format(duration))
2707
 
    # End token found
2708
 
    return value
2709
 
 
2710
 
 
2711
1549
def string_to_delta(interval):
2712
1550
    """Parse a string and return a datetime.timedelta
2713
1551
    
2714
 
    >>> string_to_delta('7d')
 
1552
    >>> string_to_delta(u'7d')
2715
1553
    datetime.timedelta(7)
2716
 
    >>> string_to_delta('60s')
 
1554
    >>> string_to_delta(u'60s')
2717
1555
    datetime.timedelta(0, 60)
2718
 
    >>> string_to_delta('60m')
 
1556
    >>> string_to_delta(u'60m')
2719
1557
    datetime.timedelta(0, 3600)
2720
 
    >>> string_to_delta('24h')
 
1558
    >>> string_to_delta(u'24h')
2721
1559
    datetime.timedelta(1)
2722
 
    >>> string_to_delta('1w')
 
1560
    >>> string_to_delta(u'1w')
2723
1561
    datetime.timedelta(7)
2724
 
    >>> string_to_delta('5m 30s')
 
1562
    >>> string_to_delta(u'5m 30s')
2725
1563
    datetime.timedelta(0, 330)
2726
1564
    """
2727
 
    
2728
 
    try:
2729
 
        return rfc3339_duration_to_delta(interval)
2730
 
    except ValueError:
2731
 
        pass
2732
 
    
2733
1565
    timevalue = datetime.timedelta(0)
2734
1566
    for s in interval.split():
2735
1567
        try:
2736
 
            suffix = s[-1]
 
1568
            suffix = unicode(s[-1])
2737
1569
            value = int(s[:-1])
2738
 
            if suffix == "d":
 
1570
            if suffix == u"d":
2739
1571
                delta = datetime.timedelta(value)
2740
 
            elif suffix == "s":
 
1572
            elif suffix == u"s":
2741
1573
                delta = datetime.timedelta(0, value)
2742
 
            elif suffix == "m":
 
1574
            elif suffix == u"m":
2743
1575
                delta = datetime.timedelta(0, 0, 0, 0, value)
2744
 
            elif suffix == "h":
 
1576
            elif suffix == u"h":
2745
1577
                delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2746
 
            elif suffix == "w":
 
1578
            elif suffix == u"w":
2747
1579
                delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2748
1580
            else:
2749
 
                raise ValueError("Unknown suffix {!r}".format(suffix))
2750
 
        except IndexError as e:
2751
 
            raise ValueError(*(e.args))
 
1581
                raise ValueError(u"Unknown suffix %r" % suffix)
 
1582
        except (ValueError, IndexError), e:
 
1583
            raise ValueError(e.message)
2752
1584
        timevalue += delta
2753
1585
    return timevalue
2754
1586
 
2755
1587
 
 
1588
def if_nametoindex(interface):
 
1589
    """Call the C function if_nametoindex(), or equivalent
 
1590
    
 
1591
    Note: This function cannot accept a unicode string."""
 
1592
    global if_nametoindex
 
1593
    try:
 
1594
        if_nametoindex = (ctypes.cdll.LoadLibrary
 
1595
                          (ctypes.util.find_library(u"c"))
 
1596
                          .if_nametoindex)
 
1597
    except (OSError, AttributeError):
 
1598
        logger.warning(u"Doing if_nametoindex the hard way")
 
1599
        def if_nametoindex(interface):
 
1600
            "Get an interface index the hard way, i.e. using fcntl()"
 
1601
            SIOCGIFINDEX = 0x8933  # From /usr/include/linux/sockios.h
 
1602
            with contextlib.closing(socket.socket()) as s:
 
1603
                ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
 
1604
                                    struct.pack(str(u"16s16x"),
 
1605
                                                interface))
 
1606
            interface_index = struct.unpack(str(u"I"),
 
1607
                                            ifreq[16:20])[0]
 
1608
            return interface_index
 
1609
    return if_nametoindex(interface)
 
1610
 
 
1611
 
2756
1612
def daemon(nochdir = False, noclose = False):
2757
1613
    """See daemon(3).  Standard BSD Unix function.
2758
1614
    
2761
1617
        sys.exit()
2762
1618
    os.setsid()
2763
1619
    if not nochdir:
2764
 
        os.chdir("/")
 
1620
        os.chdir(u"/")
2765
1621
    if os.fork():
2766
1622
        sys.exit()
2767
1623
    if not noclose:
2768
1624
        # Close all standard open file descriptors
2769
 
        null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
 
1625
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2770
1626
        if not stat.S_ISCHR(os.fstat(null).st_mode):
2771
1627
            raise OSError(errno.ENODEV,
2772
 
                          "{} not a character device"
2773
 
                          .format(os.devnull))
 
1628
                          u"%s not a character device"
 
1629
                          % os.path.devnull)
2774
1630
        os.dup2(null, sys.stdin.fileno())
2775
1631
        os.dup2(null, sys.stdout.fileno())
2776
1632
        os.dup2(null, sys.stderr.fileno())
2783
1639
    ##################################################################
2784
1640
    # Parsing of options, both command line and config file
2785
1641
    
2786
 
    parser = argparse.ArgumentParser()
2787
 
    parser.add_argument("-v", "--version", action="version",
2788
 
                        version = "%(prog)s {}".format(version),
2789
 
                        help="show version number and exit")
2790
 
    parser.add_argument("-i", "--interface", metavar="IF",
2791
 
                        help="Bind to interface IF")
2792
 
    parser.add_argument("-a", "--address",
2793
 
                        help="Address to listen for requests on")
2794
 
    parser.add_argument("-p", "--port", type=int,
2795
 
                        help="Port number to receive requests on")
2796
 
    parser.add_argument("--check", action="store_true",
2797
 
                        help="Run self-test")
2798
 
    parser.add_argument("--debug", action="store_true",
2799
 
                        help="Debug mode; run in foreground and log"
2800
 
                        " to terminal", default=None)
2801
 
    parser.add_argument("--debuglevel", metavar="LEVEL",
2802
 
                        help="Debug level for stdout output")
2803
 
    parser.add_argument("--priority", help="GnuTLS"
2804
 
                        " priority string (see GnuTLS documentation)")
2805
 
    parser.add_argument("--servicename",
2806
 
                        metavar="NAME", help="Zeroconf service name")
2807
 
    parser.add_argument("--configdir",
2808
 
                        default="/etc/mandos", metavar="DIR",
2809
 
                        help="Directory to search for configuration"
2810
 
                        " files")
2811
 
    parser.add_argument("--no-dbus", action="store_false",
2812
 
                        dest="use_dbus", help="Do not provide D-Bus"
2813
 
                        " system bus interface", default=None)
2814
 
    parser.add_argument("--no-ipv6", action="store_false",
2815
 
                        dest="use_ipv6", help="Do not use IPv6",
2816
 
                        default=None)
2817
 
    parser.add_argument("--no-restore", action="store_false",
2818
 
                        dest="restore", help="Do not restore stored"
2819
 
                        " state", default=None)
2820
 
    parser.add_argument("--socket", type=int,
2821
 
                        help="Specify a file descriptor to a network"
2822
 
                        " socket to use instead of creating one")
2823
 
    parser.add_argument("--statedir", metavar="DIR",
2824
 
                        help="Directory to save/restore state in")
2825
 
    parser.add_argument("--foreground", action="store_true",
2826
 
                        help="Run in foreground", default=None)
2827
 
    parser.add_argument("--no-zeroconf", action="store_false",
2828
 
                        dest="zeroconf", help="Do not use Zeroconf",
2829
 
                        default=None)
2830
 
    
2831
 
    options = parser.parse_args()
 
1642
    parser = optparse.OptionParser(version = "%%prog %s" % version)
 
1643
    parser.add_option("-i", u"--interface", type=u"string",
 
1644
                      metavar="IF", help=u"Bind to interface IF")
 
1645
    parser.add_option("-a", u"--address", type=u"string",
 
1646
                      help=u"Address to listen for requests on")
 
1647
    parser.add_option("-p", u"--port", type=u"int",
 
1648
                      help=u"Port number to receive requests on")
 
1649
    parser.add_option("--check", action=u"store_true",
 
1650
                      help=u"Run self-test")
 
1651
    parser.add_option("--debug", action=u"store_true",
 
1652
                      help=u"Debug mode; run in foreground and log to"
 
1653
                      u" terminal")
 
1654
    parser.add_option("--debuglevel", type=u"string", metavar="Level",
 
1655
                      help=u"Debug level for stdout output")
 
1656
    parser.add_option("--priority", type=u"string", help=u"GnuTLS"
 
1657
                      u" priority string (see GnuTLS documentation)")
 
1658
    parser.add_option("--servicename", type=u"string",
 
1659
                      metavar=u"NAME", help=u"Zeroconf service name")
 
1660
    parser.add_option("--configdir", type=u"string",
 
1661
                      default=u"/etc/mandos", metavar=u"DIR",
 
1662
                      help=u"Directory to search for configuration"
 
1663
                      u" files")
 
1664
    parser.add_option("--no-dbus", action=u"store_false",
 
1665
                      dest=u"use_dbus", help=u"Do not provide D-Bus"
 
1666
                      u" system bus interface")
 
1667
    parser.add_option("--no-ipv6", action=u"store_false",
 
1668
                      dest=u"use_ipv6", help=u"Do not use IPv6")
 
1669
    options = parser.parse_args()[0]
2832
1670
    
2833
1671
    if options.check:
2834
1672
        import doctest
2835
 
        fail_count, test_count = doctest.testmod()
2836
 
        sys.exit(os.EX_OK if fail_count == 0 else 1)
 
1673
        doctest.testmod()
 
1674
        sys.exit()
2837
1675
    
2838
1676
    # Default values for config file for server-global settings
2839
 
    server_defaults = { "interface": "",
2840
 
                        "address": "",
2841
 
                        "port": "",
2842
 
                        "debug": "False",
2843
 
                        "priority":
2844
 
                        "SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2845
 
                        ":+SIGN-DSA-SHA256",
2846
 
                        "servicename": "Mandos",
2847
 
                        "use_dbus": "True",
2848
 
                        "use_ipv6": "True",
2849
 
                        "debuglevel": "",
2850
 
                        "restore": "True",
2851
 
                        "socket": "",
2852
 
                        "statedir": "/var/lib/mandos",
2853
 
                        "foreground": "False",
2854
 
                        "zeroconf": "True",
2855
 
                    }
 
1677
    server_defaults = { u"interface": u"",
 
1678
                        u"address": u"",
 
1679
                        u"port": u"",
 
1680
                        u"debug": u"False",
 
1681
                        u"priority":
 
1682
                        u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
 
1683
                        u"servicename": u"Mandos",
 
1684
                        u"use_dbus": u"True",
 
1685
                        u"use_ipv6": u"True",
 
1686
                        u"debuglevel": u"",
 
1687
                        }
2856
1688
    
2857
1689
    # Parse config file for server-global settings
2858
1690
    server_config = configparser.SafeConfigParser(server_defaults)
2859
1691
    del server_defaults
2860
 
    server_config.read(os.path.join(options.configdir, "mandos.conf"))
 
1692
    server_config.read(os.path.join(options.configdir,
 
1693
                                    u"mandos.conf"))
2861
1694
    # Convert the SafeConfigParser object to a dict
2862
1695
    server_settings = server_config.defaults()
2863
1696
    # Use the appropriate methods on the non-string config options
2864
 
    for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2865
 
        server_settings[option] = server_config.getboolean("DEFAULT",
 
1697
    for option in (u"debug", u"use_dbus", u"use_ipv6"):
 
1698
        server_settings[option] = server_config.getboolean(u"DEFAULT",
2866
1699
                                                           option)
2867
1700
    if server_settings["port"]:
2868
 
        server_settings["port"] = server_config.getint("DEFAULT",
2869
 
                                                       "port")
2870
 
    if server_settings["socket"]:
2871
 
        server_settings["socket"] = server_config.getint("DEFAULT",
2872
 
                                                         "socket")
2873
 
        # Later, stdin will, and stdout and stderr might, be dup'ed
2874
 
        # over with an opened os.devnull.  But we don't want this to
2875
 
        # happen with a supplied network socket.
2876
 
        if 0 <= server_settings["socket"] <= 2:
2877
 
            server_settings["socket"] = os.dup(server_settings
2878
 
                                               ["socket"])
 
1701
        server_settings["port"] = server_config.getint(u"DEFAULT",
 
1702
                                                       u"port")
2879
1703
    del server_config
2880
1704
    
2881
1705
    # Override the settings from the config file with command line
2882
1706
    # options, if set.
2883
 
    for option in ("interface", "address", "port", "debug",
2884
 
                   "priority", "servicename", "configdir", "use_dbus",
2885
 
                   "use_ipv6", "debuglevel", "restore", "statedir",
2886
 
                   "socket", "foreground", "zeroconf"):
 
1707
    for option in (u"interface", u"address", u"port", u"debug",
 
1708
                   u"priority", u"servicename", u"configdir",
 
1709
                   u"use_dbus", u"use_ipv6", u"debuglevel"):
2887
1710
        value = getattr(options, option)
2888
1711
        if value is not None:
2889
1712
            server_settings[option] = value
2890
1713
    del options
2891
1714
    # Force all strings to be unicode
2892
1715
    for option in server_settings.keys():
2893
 
        if isinstance(server_settings[option], bytes):
2894
 
            server_settings[option] = (server_settings[option]
2895
 
                                       .decode("utf-8"))
2896
 
    # Force all boolean options to be boolean
2897
 
    for option in ("debug", "use_dbus", "use_ipv6", "restore",
2898
 
                   "foreground", "zeroconf"):
2899
 
        server_settings[option] = bool(server_settings[option])
2900
 
    # Debug implies foreground
2901
 
    if server_settings["debug"]:
2902
 
        server_settings["foreground"] = True
 
1716
        if type(server_settings[option]) is str:
 
1717
            server_settings[option] = unicode(server_settings[option])
2903
1718
    # Now we have our good server settings in "server_settings"
2904
1719
    
2905
1720
    ##################################################################
2906
1721
    
2907
 
    if (not server_settings["zeroconf"]
2908
 
        and not (server_settings["port"]
2909
 
                 or server_settings["socket"] != "")):
2910
 
        parser.error("Needs port or socket to work without Zeroconf")
2911
 
    
2912
1722
    # For convenience
2913
 
    debug = server_settings["debug"]
2914
 
    debuglevel = server_settings["debuglevel"]
2915
 
    use_dbus = server_settings["use_dbus"]
2916
 
    use_ipv6 = server_settings["use_ipv6"]
2917
 
    stored_state_path = os.path.join(server_settings["statedir"],
2918
 
                                     stored_state_file)
2919
 
    foreground = server_settings["foreground"]
2920
 
    zeroconf = server_settings["zeroconf"]
2921
 
    
2922
 
    if debug:
2923
 
        initlogger(debug, logging.DEBUG)
2924
 
    else:
2925
 
        if not debuglevel:
2926
 
            initlogger(debug)
2927
 
        else:
2928
 
            level = getattr(logging, debuglevel.upper())
2929
 
            initlogger(debug, level)
2930
 
    
2931
 
    if server_settings["servicename"] != "Mandos":
2932
 
        syslogger.setFormatter(
2933
 
            logging.Formatter('Mandos ({}) [%(process)d]:'
2934
 
                              ' %(levelname)s: %(message)s'.format(
2935
 
                                  server_settings["servicename"])))
 
1723
    debug = server_settings[u"debug"]
 
1724
    debuglevel = server_settings[u"debuglevel"]
 
1725
    use_dbus = server_settings[u"use_dbus"]
 
1726
    use_ipv6 = server_settings[u"use_ipv6"]
 
1727
 
 
1728
    if server_settings[u"servicename"] != u"Mandos":
 
1729
        syslogger.setFormatter(logging.Formatter
 
1730
                               (u'Mandos (%s) [%%(process)d]:'
 
1731
                                u' %%(levelname)s: %%(message)s'
 
1732
                                % server_settings[u"servicename"]))
2936
1733
    
2937
1734
    # Parse config file with clients
2938
 
    client_config = configparser.SafeConfigParser(Client
2939
 
                                                  .client_defaults)
2940
 
    client_config.read(os.path.join(server_settings["configdir"],
2941
 
                                    "clients.conf"))
 
1735
    client_defaults = { u"timeout": u"1h",
 
1736
                        u"interval": u"5m",
 
1737
                        u"checker": u"fping -q -- %%(host)s",
 
1738
                        u"host": u"",
 
1739
                        u"approval_delay": u"0s",
 
1740
                        u"approval_duration": u"1s",
 
1741
                        }
 
1742
    client_config = configparser.SafeConfigParser(client_defaults)
 
1743
    client_config.read(os.path.join(server_settings[u"configdir"],
 
1744
                                    u"clients.conf"))
2942
1745
    
2943
1746
    global mandos_dbus_service
2944
1747
    mandos_dbus_service = None
2945
1748
    
2946
 
    socketfd = None
2947
 
    if server_settings["socket"] != "":
2948
 
        socketfd = server_settings["socket"]
2949
 
    tcp_server = MandosServer(
2950
 
        (server_settings["address"], server_settings["port"]),
2951
 
        ClientHandler,
2952
 
        interface=(server_settings["interface"] or None),
2953
 
        use_ipv6=use_ipv6,
2954
 
        gnutls_priority=server_settings["priority"],
2955
 
        use_dbus=use_dbus,
2956
 
        socketfd=socketfd)
2957
 
    if not foreground:
2958
 
        pidfilename = "/run/mandos.pid"
2959
 
        if not os.path.isdir("/run/."):
2960
 
            pidfilename = "/var/run/mandos.pid"
2961
 
        pidfile = None
2962
 
        try:
2963
 
            pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2964
 
        except IOError as e:
2965
 
            logger.error("Could not open file %r", pidfilename,
2966
 
                         exc_info=e)
 
1749
    tcp_server = MandosServer((server_settings[u"address"],
 
1750
                               server_settings[u"port"]),
 
1751
                              ClientHandler,
 
1752
                              interface=(server_settings[u"interface"]
 
1753
                                         or None),
 
1754
                              use_ipv6=use_ipv6,
 
1755
                              gnutls_priority=
 
1756
                              server_settings[u"priority"],
 
1757
                              use_dbus=use_dbus)
 
1758
    pidfilename = u"/var/run/mandos.pid"
 
1759
    try:
 
1760
        pidfile = open(pidfilename, u"w")
 
1761
    except IOError:
 
1762
        logger.error(u"Could not open file %r", pidfilename)
2967
1763
    
2968
 
    for name, group in (("_mandos", "_mandos"),
2969
 
                        ("mandos", "mandos"),
2970
 
                        ("nobody", "nogroup")):
 
1764
    try:
 
1765
        uid = pwd.getpwnam(u"_mandos").pw_uid
 
1766
        gid = pwd.getpwnam(u"_mandos").pw_gid
 
1767
    except KeyError:
2971
1768
        try:
2972
 
            uid = pwd.getpwnam(name).pw_uid
2973
 
            gid = pwd.getpwnam(group).pw_gid
2974
 
            break
 
1769
            uid = pwd.getpwnam(u"mandos").pw_uid
 
1770
            gid = pwd.getpwnam(u"mandos").pw_gid
2975
1771
        except KeyError:
2976
 
            continue
2977
 
    else:
2978
 
        uid = 65534
2979
 
        gid = 65534
 
1772
            try:
 
1773
                uid = pwd.getpwnam(u"nobody").pw_uid
 
1774
                gid = pwd.getpwnam(u"nobody").pw_gid
 
1775
            except KeyError:
 
1776
                uid = 65534
 
1777
                gid = 65534
2980
1778
    try:
2981
1779
        os.setgid(gid)
2982
1780
        os.setuid(uid)
2983
 
        if debug:
2984
 
            logger.debug("Did setuid/setgid to {}:{}".format(uid,
2985
 
                                                             gid))
2986
 
    except OSError as error:
2987
 
        logger.warning("Failed to setuid/setgid to {}:{}: {}"
2988
 
                       .format(uid, gid, os.strerror(error.errno)))
2989
 
        if error.errno != errno.EPERM:
2990
 
            raise
 
1781
    except OSError, error:
 
1782
        if error[0] != errno.EPERM:
 
1783
            raise error
2991
1784
    
 
1785
    if not debug and not debuglevel:
 
1786
        syslogger.setLevel(logging.WARNING)
 
1787
        console.setLevel(logging.WARNING)
 
1788
    if debuglevel:
 
1789
        level = getattr(logging, debuglevel.upper())
 
1790
        syslogger.setLevel(level)
 
1791
        console.setLevel(level)
 
1792
 
2992
1793
    if debug:
2993
1794
        # Enable all possible GnuTLS debugging
2994
1795
        
2995
1796
        # "Use a log level over 10 to enable all debugging options."
2996
1797
        # - GnuTLS manual
2997
 
        gnutls.global_set_log_level(11)
 
1798
        gnutls.library.functions.gnutls_global_set_log_level(11)
2998
1799
        
2999
 
        @gnutls.log_func
 
1800
        @gnutls.library.types.gnutls_log_func
3000
1801
        def debug_gnutls(level, string):
3001
 
            logger.debug("GnuTLS: %s", string[:-1])
 
1802
            logger.debug(u"GnuTLS: %s", string[:-1])
3002
1803
        
3003
 
        gnutls.global_set_log_function(debug_gnutls)
 
1804
        (gnutls.library.functions
 
1805
         .gnutls_global_set_log_function(debug_gnutls))
3004
1806
        
3005
1807
        # Redirect stdin so all checkers get /dev/null
3006
 
        null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
 
1808
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3007
1809
        os.dup2(null, sys.stdin.fileno())
3008
1810
        if null > 2:
3009
1811
            os.close(null)
3010
 
    
3011
 
    # Need to fork before connecting to D-Bus
3012
 
    if not foreground:
3013
 
        # Close all input and output, do double fork, etc.
3014
 
        daemon()
3015
 
    
3016
 
    # multiprocessing will use threads, so before we use GLib we need
3017
 
    # to inform GLib that threads will be used.
3018
 
    GLib.threads_init()
 
1812
    else:
 
1813
        # No console logging
 
1814
        logger.removeHandler(console)
 
1815
    
3019
1816
    
3020
1817
    global main_loop
3021
1818
    # From the Avahi example code
3022
 
    DBusGMainLoop(set_as_default=True)
3023
 
    main_loop = GLib.MainLoop()
 
1819
    DBusGMainLoop(set_as_default=True )
 
1820
    main_loop = gobject.MainLoop()
3024
1821
    bus = dbus.SystemBus()
3025
1822
    # End of Avahi example code
3026
1823
    if use_dbus:
3027
1824
        try:
3028
 
            bus_name = dbus.service.BusName("se.recompile.Mandos",
3029
 
                                            bus,
3030
 
                                            do_not_queue=True)
3031
 
            old_bus_name = dbus.service.BusName(
3032
 
                "se.bsnet.fukt.Mandos", bus,
3033
 
                do_not_queue=True)
3034
 
        except dbus.exceptions.DBusException as e:
3035
 
            logger.error("Disabling D-Bus:", exc_info=e)
 
1825
            bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
 
1826
                                            bus, do_not_queue=True)
 
1827
        except dbus.exceptions.NameExistsException, e:
 
1828
            logger.error(unicode(e) + u", disabling D-Bus")
3036
1829
            use_dbus = False
3037
 
            server_settings["use_dbus"] = False
 
1830
            server_settings[u"use_dbus"] = False
3038
1831
            tcp_server.use_dbus = False
3039
 
    if zeroconf:
3040
 
        protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3041
 
        service = AvahiServiceToSyslog(
3042
 
            name = server_settings["servicename"],
3043
 
            servicetype = "_mandos._tcp",
3044
 
            protocol = protocol,
3045
 
            bus = bus)
3046
 
        if server_settings["interface"]:
3047
 
            service.interface = if_nametoindex(
3048
 
                server_settings["interface"].encode("utf-8"))
3049
 
    
 
1832
    protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
 
1833
    service = AvahiService(name = server_settings[u"servicename"],
 
1834
                           servicetype = u"_mandos._tcp",
 
1835
                           protocol = protocol, bus = bus)
 
1836
    if server_settings["interface"]:
 
1837
        service.interface = (if_nametoindex
 
1838
                             (str(server_settings[u"interface"])))
 
1839
 
 
1840
    if not debug:
 
1841
        # Close all input and output, do double fork, etc.
 
1842
        daemon()
 
1843
        
3050
1844
    global multiprocessing_manager
3051
1845
    multiprocessing_manager = multiprocessing.Manager()
3052
1846
    
3053
1847
    client_class = Client
3054
1848
    if use_dbus:
3055
1849
        client_class = functools.partial(ClientDBus, bus = bus)
3056
 
    
3057
 
    client_settings = Client.config_parser(client_config)
3058
 
    old_client_settings = {}
3059
 
    clients_data = {}
3060
 
    
3061
 
    # This is used to redirect stdout and stderr for checker processes
3062
 
    global wnull
3063
 
    wnull = open(os.devnull, "w") # A writable /dev/null
3064
 
    # Only used if server is running in foreground but not in debug
3065
 
    # mode
3066
 
    if debug or not foreground:
3067
 
        wnull.close()
3068
 
    
3069
 
    # Get client data and settings from last running state.
3070
 
    if server_settings["restore"]:
3071
 
        try:
3072
 
            with open(stored_state_path, "rb") as stored_state:
3073
 
                if sys.version_info.major == 2:                
3074
 
                    clients_data, old_client_settings = pickle.load(
3075
 
                        stored_state)
3076
 
                else:
3077
 
                    bytes_clients_data, bytes_old_client_settings = (
3078
 
                        pickle.load(stored_state, encoding = "bytes"))
3079
 
                    ### Fix bytes to strings
3080
 
                    ## clients_data
3081
 
                    # .keys()
3082
 
                    clients_data = { (key.decode("utf-8")
3083
 
                                      if isinstance(key, bytes)
3084
 
                                      else key): value
3085
 
                                     for key, value in
3086
 
                                     bytes_clients_data.items() }
3087
 
                    del bytes_clients_data
3088
 
                    for key in clients_data:
3089
 
                        value = { (k.decode("utf-8")
3090
 
                                   if isinstance(k, bytes) else k): v
3091
 
                                  for k, v in
3092
 
                                  clients_data[key].items() }
3093
 
                        clients_data[key] = value
3094
 
                        # .client_structure
3095
 
                        value["client_structure"] = [
3096
 
                            (s.decode("utf-8")
3097
 
                             if isinstance(s, bytes)
3098
 
                             else s) for s in
3099
 
                            value["client_structure"] ]
3100
 
                        # .name & .host
3101
 
                        for k in ("name", "host"):
3102
 
                            if isinstance(value[k], bytes):
3103
 
                                value[k] = value[k].decode("utf-8")
3104
 
                    ## old_client_settings
3105
 
                    # .keys()
3106
 
                    old_client_settings = {
3107
 
                        (key.decode("utf-8")
3108
 
                         if isinstance(key, bytes)
3109
 
                         else key): value
3110
 
                        for key, value in
3111
 
                        bytes_old_client_settings.items() }
3112
 
                    del bytes_old_client_settings
3113
 
                    # .host
3114
 
                    for value in old_client_settings.values():
3115
 
                        if isinstance(value["host"], bytes):
3116
 
                            value["host"] = (value["host"]
3117
 
                                             .decode("utf-8"))
3118
 
            os.remove(stored_state_path)
3119
 
        except IOError as e:
3120
 
            if e.errno == errno.ENOENT:
3121
 
                logger.warning("Could not load persistent state:"
3122
 
                               " {}".format(os.strerror(e.errno)))
3123
 
            else:
3124
 
                logger.critical("Could not load persistent state:",
3125
 
                                exc_info=e)
3126
 
                raise
3127
 
        except EOFError as e:
3128
 
            logger.warning("Could not load persistent state: "
3129
 
                           "EOFError:",
3130
 
                           exc_info=e)
3131
 
    
3132
 
    with PGPEngine() as pgp:
3133
 
        for client_name, client in clients_data.items():
3134
 
            # Skip removed clients
3135
 
            if client_name not in client_settings:
3136
 
                continue
3137
 
            
3138
 
            # Decide which value to use after restoring saved state.
3139
 
            # We have three different values: Old config file,
3140
 
            # new config file, and saved state.
3141
 
            # New config value takes precedence if it differs from old
3142
 
            # config value, otherwise use saved state.
3143
 
            for name, value in client_settings[client_name].items():
3144
 
                try:
3145
 
                    # For each value in new config, check if it
3146
 
                    # differs from the old config value (Except for
3147
 
                    # the "secret" attribute)
3148
 
                    if (name != "secret"
3149
 
                        and (value !=
3150
 
                             old_client_settings[client_name][name])):
3151
 
                        client[name] = value
3152
 
                except KeyError:
3153
 
                    pass
3154
 
            
3155
 
            # Clients who has passed its expire date can still be
3156
 
            # enabled if its last checker was successful.  A Client
3157
 
            # whose checker succeeded before we stored its state is
3158
 
            # assumed to have successfully run all checkers during
3159
 
            # downtime.
3160
 
            if client["enabled"]:
3161
 
                if datetime.datetime.utcnow() >= client["expires"]:
3162
 
                    if not client["last_checked_ok"]:
3163
 
                        logger.warning(
3164
 
                            "disabling client {} - Client never "
3165
 
                            "performed a successful checker".format(
3166
 
                                client_name))
3167
 
                        client["enabled"] = False
3168
 
                    elif client["last_checker_status"] != 0:
3169
 
                        logger.warning(
3170
 
                            "disabling client {} - Client last"
3171
 
                            " checker failed with error code"
3172
 
                            " {}".format(
3173
 
                                client_name,
3174
 
                                client["last_checker_status"]))
3175
 
                        client["enabled"] = False
3176
 
                    else:
3177
 
                        client["expires"] = (
3178
 
                            datetime.datetime.utcnow()
3179
 
                            + client["timeout"])
3180
 
                        logger.debug("Last checker succeeded,"
3181
 
                                     " keeping {} enabled".format(
3182
 
                                         client_name))
 
1850
    def client_config_items(config, section):
 
1851
        special_settings = {
 
1852
            "approved_by_default":
 
1853
                lambda: config.getboolean(section,
 
1854
                                          "approved_by_default"),
 
1855
            }
 
1856
        for name, value in config.items(section):
3183
1857
            try:
3184
 
                client["secret"] = pgp.decrypt(
3185
 
                    client["encrypted_secret"],
3186
 
                    client_settings[client_name]["secret"])
3187
 
            except PGPError:
3188
 
                # If decryption fails, we use secret from new settings
3189
 
                logger.debug("Failed to decrypt {} old secret".format(
3190
 
                    client_name))
3191
 
                client["secret"] = (client_settings[client_name]
3192
 
                                    ["secret"])
3193
 
    
3194
 
    # Add/remove clients based on new changes made to config
3195
 
    for client_name in (set(old_client_settings)
3196
 
                        - set(client_settings)):
3197
 
        del clients_data[client_name]
3198
 
    for client_name in (set(client_settings)
3199
 
                        - set(old_client_settings)):
3200
 
        clients_data[client_name] = client_settings[client_name]
3201
 
    
3202
 
    # Create all client objects
3203
 
    for client_name, client in clients_data.items():
3204
 
        tcp_server.clients[client_name] = client_class(
3205
 
            name = client_name,
3206
 
            settings = client,
3207
 
            server_settings = server_settings)
3208
 
    
 
1858
                yield (name, special_settings[name]())
 
1859
            except KeyError:
 
1860
                yield (name, value)
 
1861
    
 
1862
    tcp_server.clients.update(set(
 
1863
            client_class(name = section,
 
1864
                         config= dict(client_config_items(
 
1865
                        client_config, section)))
 
1866
            for section in client_config.sections()))
3209
1867
    if not tcp_server.clients:
3210
 
        logger.warning("No clients defined")
3211
 
    
3212
 
    if not foreground:
3213
 
        if pidfile is not None:
 
1868
        logger.warning(u"No clients defined")
 
1869
        
 
1870
    try:
 
1871
        with pidfile:
3214
1872
            pid = os.getpid()
3215
 
            try:
3216
 
                with pidfile:
3217
 
                    print(pid, file=pidfile)
3218
 
            except IOError:
3219
 
                logger.error("Could not write to file %r with PID %d",
3220
 
                             pidfilename, pid)
 
1873
            pidfile.write(str(pid) + "\n")
3221
1874
        del pidfile
3222
 
        del pidfilename
 
1875
    except IOError:
 
1876
        logger.error(u"Could not write to file %r with PID %d",
 
1877
                     pidfilename, pid)
 
1878
    except NameError:
 
1879
        # "pidfile" was never created
 
1880
        pass
 
1881
    del pidfilename
3223
1882
    
3224
 
    for termsig in (signal.SIGHUP, signal.SIGTERM):
3225
 
        GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3226
 
                             lambda: main_loop.quit() and False)
 
1883
    if not debug:
 
1884
        signal.signal(signal.SIGINT, signal.SIG_IGN)
 
1885
    signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
 
1886
    signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3227
1887
    
3228
1888
    if use_dbus:
3229
 
        
3230
 
        @alternate_dbus_interfaces(
3231
 
            { "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3232
 
        class MandosDBusService(DBusObjectWithObjectManager):
 
1889
        class MandosDBusService(dbus.service.Object):
3233
1890
            """A D-Bus proxy object"""
3234
 
            
3235
1891
            def __init__(self):
3236
 
                dbus.service.Object.__init__(self, bus, "/")
3237
 
            
3238
 
            _interface = "se.recompile.Mandos"
3239
 
            
3240
 
            @dbus.service.signal(_interface, signature="o")
 
1892
                dbus.service.Object.__init__(self, bus, u"/")
 
1893
            _interface = u"se.bsnet.fukt.Mandos"
 
1894
            
 
1895
            @dbus.service.signal(_interface, signature=u"o")
3241
1896
            def ClientAdded(self, objpath):
3242
1897
                "D-Bus signal"
3243
1898
                pass
3244
1899
            
3245
 
            @dbus.service.signal(_interface, signature="ss")
 
1900
            @dbus.service.signal(_interface, signature=u"ss")
3246
1901
            def ClientNotFound(self, fingerprint, address):
3247
1902
                "D-Bus signal"
3248
1903
                pass
3249
1904
            
3250
 
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
3251
 
                               "true"})
3252
 
            @dbus.service.signal(_interface, signature="os")
 
1905
            @dbus.service.signal(_interface, signature=u"os")
3253
1906
            def ClientRemoved(self, objpath, name):
3254
1907
                "D-Bus signal"
3255
1908
                pass
3256
1909
            
3257
 
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
3258
 
                               "true"})
3259
 
            @dbus.service.method(_interface, out_signature="ao")
 
1910
            @dbus.service.method(_interface, out_signature=u"ao")
3260
1911
            def GetAllClients(self):
3261
1912
                "D-Bus method"
3262
 
                return dbus.Array(c.dbus_object_path for c in
3263
 
                                  tcp_server.clients.values())
 
1913
                return dbus.Array(c.dbus_object_path
 
1914
                                  for c in tcp_server.clients)
3264
1915
            
3265
 
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
3266
 
                               "true"})
3267
1916
            @dbus.service.method(_interface,
3268
 
                                 out_signature="a{oa{sv}}")
 
1917
                                 out_signature=u"a{oa{sv}}")
3269
1918
            def GetAllClientsWithProperties(self):
3270
1919
                "D-Bus method"
3271
1920
                return dbus.Dictionary(
3272
 
                    { c.dbus_object_path: c.GetAll(
3273
 
                        "se.recompile.Mandos.Client")
3274
 
                      for c in tcp_server.clients.values() },
3275
 
                    signature="oa{sv}")
 
1921
                    ((c.dbus_object_path, c.GetAll(u""))
 
1922
                     for c in tcp_server.clients),
 
1923
                    signature=u"oa{sv}")
3276
1924
            
3277
 
            @dbus.service.method(_interface, in_signature="o")
 
1925
            @dbus.service.method(_interface, in_signature=u"o")
3278
1926
            def RemoveClient(self, object_path):
3279
1927
                "D-Bus method"
3280
 
                for c in tcp_server.clients.values():
 
1928
                for c in tcp_server.clients:
3281
1929
                    if c.dbus_object_path == object_path:
3282
 
                        del tcp_server.clients[c.name]
 
1930
                        tcp_server.clients.remove(c)
3283
1931
                        c.remove_from_connection()
3284
 
                        # Don't signal the disabling
 
1932
                        # Don't signal anything except ClientRemoved
3285
1933
                        c.disable(quiet=True)
3286
 
                        # Emit D-Bus signal for removal
3287
 
                        self.client_removed_signal(c)
 
1934
                        # Emit D-Bus signal
 
1935
                        self.ClientRemoved(object_path, c.name)
3288
1936
                        return
3289
1937
                raise KeyError(object_path)
3290
1938
            
3291
1939
            del _interface
3292
 
            
3293
 
            @dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3294
 
                                 out_signature = "a{oa{sa{sv}}}")
3295
 
            def GetManagedObjects(self):
3296
 
                """D-Bus method"""
3297
 
                return dbus.Dictionary(
3298
 
                    { client.dbus_object_path:
3299
 
                      dbus.Dictionary(
3300
 
                          { interface: client.GetAll(interface)
3301
 
                            for interface in
3302
 
                                 client._get_all_interface_names()})
3303
 
                      for client in tcp_server.clients.values()})
3304
 
            
3305
 
            def client_added_signal(self, client):
3306
 
                """Send the new standard signal and the old signal"""
3307
 
                if use_dbus:
3308
 
                    # New standard signal
3309
 
                    self.InterfacesAdded(
3310
 
                        client.dbus_object_path,
3311
 
                        dbus.Dictionary(
3312
 
                            { interface: client.GetAll(interface)
3313
 
                              for interface in
3314
 
                              client._get_all_interface_names()}))
3315
 
                    # Old signal
3316
 
                    self.ClientAdded(client.dbus_object_path)
3317
 
            
3318
 
            def client_removed_signal(self, client):
3319
 
                """Send the new standard signal and the old signal"""
3320
 
                if use_dbus:
3321
 
                    # New standard signal
3322
 
                    self.InterfacesRemoved(
3323
 
                        client.dbus_object_path,
3324
 
                        client._get_all_interface_names())
3325
 
                    # Old signal
3326
 
                    self.ClientRemoved(client.dbus_object_path,
3327
 
                                       client.name)
3328
1940
        
3329
1941
        mandos_dbus_service = MandosDBusService()
3330
1942
    
3331
 
    # Save modules to variables to exempt the modules from being
3332
 
    # unloaded before the function registered with atexit() is run.
3333
 
    mp = multiprocessing
3334
 
    wn = wnull
3335
1943
    def cleanup():
3336
1944
        "Cleanup function; run on exit"
3337
 
        if zeroconf:
3338
 
            service.cleanup()
3339
 
        
3340
 
        mp.active_children()
3341
 
        wn.close()
3342
 
        if not (tcp_server.clients or client_settings):
3343
 
            return
3344
 
        
3345
 
        # Store client before exiting. Secrets are encrypted with key
3346
 
        # based on what config file has. If config file is
3347
 
        # removed/edited, old secret will thus be unrecovable.
3348
 
        clients = {}
3349
 
        with PGPEngine() as pgp:
3350
 
            for client in tcp_server.clients.values():
3351
 
                key = client_settings[client.name]["secret"]
3352
 
                client.encrypted_secret = pgp.encrypt(client.secret,
3353
 
                                                      key)
3354
 
                client_dict = {}
3355
 
                
3356
 
                # A list of attributes that can not be pickled
3357
 
                # + secret.
3358
 
                exclude = { "bus", "changedstate", "secret",
3359
 
                            "checker", "server_settings" }
3360
 
                for name, typ in inspect.getmembers(dbus.service
3361
 
                                                    .Object):
3362
 
                    exclude.add(name)
3363
 
                
3364
 
                client_dict["encrypted_secret"] = (client
3365
 
                                                   .encrypted_secret)
3366
 
                for attr in client.client_structure:
3367
 
                    if attr not in exclude:
3368
 
                        client_dict[attr] = getattr(client, attr)
3369
 
                
3370
 
                clients[client.name] = client_dict
3371
 
                del client_settings[client.name]["secret"]
3372
 
        
3373
 
        try:
3374
 
            with tempfile.NamedTemporaryFile(
3375
 
                    mode='wb',
3376
 
                    suffix=".pickle",
3377
 
                    prefix='clients-',
3378
 
                    dir=os.path.dirname(stored_state_path),
3379
 
                    delete=False) as stored_state:
3380
 
                pickle.dump((clients, client_settings), stored_state,
3381
 
                            protocol = 2)
3382
 
                tempname = stored_state.name
3383
 
            os.rename(tempname, stored_state_path)
3384
 
        except (IOError, OSError) as e:
3385
 
            if not debug:
3386
 
                try:
3387
 
                    os.remove(tempname)
3388
 
                except NameError:
3389
 
                    pass
3390
 
            if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3391
 
                logger.warning("Could not save persistent state: {}"
3392
 
                               .format(os.strerror(e.errno)))
3393
 
            else:
3394
 
                logger.warning("Could not save persistent state:",
3395
 
                               exc_info=e)
3396
 
                raise
3397
 
        
3398
 
        # Delete all clients, and settings from config
 
1945
        service.cleanup()
 
1946
        
3399
1947
        while tcp_server.clients:
3400
 
            name, client = tcp_server.clients.popitem()
 
1948
            client = tcp_server.clients.pop()
3401
1949
            if use_dbus:
3402
1950
                client.remove_from_connection()
3403
 
            # Don't signal the disabling
 
1951
            client.disable_hook = None
 
1952
            # Don't signal anything except ClientRemoved
3404
1953
            client.disable(quiet=True)
3405
 
            # Emit D-Bus signal for removal
3406
1954
            if use_dbus:
3407
 
                mandos_dbus_service.client_removed_signal(client)
3408
 
        client_settings.clear()
 
1955
                # Emit D-Bus signal
 
1956
                mandos_dbus_service.ClientRemoved(client.dbus_object_path,
 
1957
                                                  client.name)
3409
1958
    
3410
1959
    atexit.register(cleanup)
3411
1960
    
3412
 
    for client in tcp_server.clients.values():
 
1961
    for client in tcp_server.clients:
3413
1962
        if use_dbus:
3414
 
            # Emit D-Bus signal for adding
3415
 
            mandos_dbus_service.client_added_signal(client)
3416
 
        # Need to initiate checking of clients
3417
 
        if client.enabled:
3418
 
            client.init_checker()
 
1963
            # Emit D-Bus signal
 
1964
            mandos_dbus_service.ClientAdded(client.dbus_object_path)
 
1965
        client.enable()
3419
1966
    
3420
1967
    tcp_server.enable()
3421
1968
    tcp_server.server_activate()
3422
1969
    
3423
1970
    # Find out what port we got
3424
 
    if zeroconf:
3425
 
        service.port = tcp_server.socket.getsockname()[1]
 
1971
    service.port = tcp_server.socket.getsockname()[1]
3426
1972
    if use_ipv6:
3427
 
        logger.info("Now listening on address %r, port %d,"
3428
 
                    " flowinfo %d, scope_id %d",
3429
 
                    *tcp_server.socket.getsockname())
 
1973
        logger.info(u"Now listening on address %r, port %d,"
 
1974
                    " flowinfo %d, scope_id %d"
 
1975
                    % tcp_server.socket.getsockname())
3430
1976
    else:                       # IPv4
3431
 
        logger.info("Now listening on address %r, port %d",
3432
 
                    *tcp_server.socket.getsockname())
 
1977
        logger.info(u"Now listening on address %r, port %d"
 
1978
                    % tcp_server.socket.getsockname())
3433
1979
    
3434
1980
    #service.interface = tcp_server.socket.getsockname()[3]
3435
1981
    
3436
1982
    try:
3437
 
        if zeroconf:
3438
 
            # From the Avahi example code
3439
 
            try:
3440
 
                service.activate()
3441
 
            except dbus.exceptions.DBusException as error:
3442
 
                logger.critical("D-Bus Exception", exc_info=error)
3443
 
                cleanup()
3444
 
                sys.exit(1)
3445
 
            # End of Avahi example code
3446
 
        
3447
 
        GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3448
 
                          lambda *args, **kwargs:
3449
 
                          (tcp_server.handle_request
3450
 
                           (*args[2:], **kwargs) or True))
3451
 
        
3452
 
        logger.debug("Starting main loop")
 
1983
        # From the Avahi example code
 
1984
        try:
 
1985
            service.activate()
 
1986
        except dbus.exceptions.DBusException, error:
 
1987
            logger.critical(u"DBusException: %s", error)
 
1988
            cleanup()
 
1989
            sys.exit(1)
 
1990
        # End of Avahi example code
 
1991
        
 
1992
        gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
 
1993
                             lambda *args, **kwargs:
 
1994
                             (tcp_server.handle_request
 
1995
                              (*args[2:], **kwargs) or True))
 
1996
        
 
1997
        logger.debug(u"Starting main loop")
3453
1998
        main_loop.run()
3454
 
    except AvahiError as error:
3455
 
        logger.critical("Avahi Error", exc_info=error)
 
1999
    except AvahiError, error:
 
2000
        logger.critical(u"AvahiError: %s", error)
3456
2001
        cleanup()
3457
2002
        sys.exit(1)
3458
2003
    except KeyboardInterrupt:
3459
2004
        if debug:
3460
 
            print("", file=sys.stderr)
3461
 
        logger.debug("Server received KeyboardInterrupt")
3462
 
    logger.debug("Server exiting")
 
2005
            print >> sys.stderr
 
2006
        logger.debug(u"Server received KeyboardInterrupt")
 
2007
    logger.debug(u"Server exiting")
3463
2008
    # Must run before the D-Bus bus name gets deregistered
3464
2009
    cleanup()
3465
2010
 
3466
 
 
3467
2011
if __name__ == '__main__':
3468
2012
    main()