/mandos/trunk

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  • Committer: Teddy Hogeborn
  • Date: 2019-07-27 10:11:45 UTC
  • Revision ID: teddy@recompile.se-20190727101145-jnpbpf8220gldbcd
Add dracut(8) support

Add support for the dracut(8) system for generating initramfs image
files; dracut is an alternative to the "initramfs-tools" package.

* .bzrignore (dracut-module/password-agent): Ignore new binary file.
* dracut-module: New directory for the dracut module.
* INSTALL (Prerequisites/Libraries/Mandos Client): Add dracut as an
                                                   alternative to
                                                   initramfs-tools,
                                                   and also add GLib.
* Makefile (DRACUTMODULE, GLIB_CFLAGS, GLIB_LIBS): New.
  (CPROGS): Add "dracut-module/password-agent".
  (DOCS): Add "dracut-module/password-agent.8mandos".
  (dracut-module/password-agent.8mandos): New.
  (dracut-module/password-agent.8mandos.xhtml): - '' -
  (dracut-module/password-agent): - '' -
  (check): Add command to run tests of password-agent(8mandos).
  (install-client-nokey): Also install the dracut module directory,
                          its files, and the password-agent(8mandos)
                          manual page.
  (install-client): To update the initramfs image file, run
                    update-initramfs or dracut depending on what is
                    installed.
  (uninstall-client): - '' - and also uninstall the the files in the
                      dracut module directory, that directory itself,
                      and the password-agent(8mandos) manual page.
* debian/control (Build-Depends): Add "libglib2.0-dev (>=2.40)".
  (Package: mandos-client/Depends): Add "dracut (>= 044+241-3)" as an
                                    alternative dependency to
                                    initramfs-tools.
  (Package: mandos-client/Conflicts): New; set to
                                      "dracut-config-generic".
  (debian/mandos-client.README.Debian): Document alternative commands
                                        to update the initramfs image
                                        for when dracut is used.
* debian/mandos-client.postinst (update_initramfs): Use alternative
                                                    commands to update
                                                    the initramfs
                                                    image for when
                                                    dracut is used.
* debian/tests/control (password-agent, password-agent-suid): Add two
                                                              new tests.
* dracut-module/ask-password-mandos.path: New.
* dracut-module/ask-password-mandos.service: - '' -
* dracut-module/cmdline-mandos.sh: - '' -
* dracut-module/module-setup.sh: - '' -
* dracut-module/password-agent.c: - '' -
* dracut-module/password-agent.xml: - '' -
* initramfs-unpack: Use the dracut "skipcpio" command, if available.
                    Also be more flexible and try hard to detect where
                    compressed data starts.
* plugins.d/mandos-client.xml (SECURITY): Be more precise that the
                                          mandos-client binary might
                                          not always be setuid, but
                                          that the program assumes
                                          that it has been started
                                          that way.
* plugins.d/password-prompt.c: Add new "--prompt" option.
  (conflict_detection): First try to detect the new PID file of
                        plymouth.
  (main): Define and use new "prompt" variable.
* plugins.d/password-prompt.xml (SYNOPSIS): Show new --prompt option.
  (DESCRIPTION): Describe new behavior of looking for plymouth PID
                 file.
  (OPTIONS): Document new "--prompt" option.
  (ENVIRONMENT): Clarify that the CRYPTTAB_SOURCE and CRYPTTAB_NAME
                 environment variables are not used if the --prompt
                 option is used.  Remove unnecessarily specific
                 details about where the CRYPTTAB_SOURCE and
                 CRYPTTAB_NAME comes from, since this can now be
                 either initramfs-tools or dracut.
  (SEE ALSO): Remove superfluous crypttab(5) reference, and add commas
              to separate the other references.
* plugins.d/plymouth.c: Add new "--prompt" and "--debug" options.
  (debug): New global flag.
  (fprintf_plus): New function, used for debug output.
  (exec_and_wait): Add extra "const" to "argv" argument.
  (main): Define and use new "prompt" variable.  Add debug output.
  (main/options, main/parse_opt): New; used to parse options.
* plugins.d/plymouth.xml (SYNOPSIS): Show new options.
  (OPTIONS): Document new options.
  (ENVIRONMENT): Clarify that the cryptsource and crypttarget
                 environment variables are not used if the --prompt
                 option is used.  Remove unnecessarily specific
                 details about where the cryptsource and crypttarget
                 comes from, since this can now be either
                 initramfs-tools or dracut.
  (EXAMPLE): Add an example using an option.
  (SEE ALSO): Remove superfluous crypttab(5) reference.
* plugins.d/splashy.xml (ENVIRONMENT): Clarify that the cryptsource
                                       and crypttarget environment
                                       variables are not used if the
                                       --prompt option is used.
                                       Remove unnecessarily specific
                                       details about where the
                                       cryptsource and crypttarget
                                       comes from, since this can now
                                       be either initramfs-tools or
                                       dracut.
  (SEE ALSO): Remove superfluous crypttab(5) reference.
* plugins.d/usplash.xml (ENVIRONMENT): Clarify that the cryptsource
                                       and crypttarget environment
                                       variables are not used if the
                                       --prompt option is used.
                                       Remove unnecessarily specific
                                       details about where the
                                       cryptsource and crypttarget
                                       comes from, since this can now
                                       be either initramfs-tools or
                                       dracut.
  (SEE ALSO): Remove superfluous crypttab(5) reference.

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Lines of Context:
mandos
1
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
 
# 
 
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
 
# 
 
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>.  This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
 
# 
 
12
#
13
13
# Everything else is
14
 
# Copyright © 2008-2011 Teddy Hogeborn
15
 
# Copyright © 2008-2011 Björn Påhlsson
16
 
# 
17
 
# This program is free software: you can redistribute it and/or modify
18
 
# it under the terms of the GNU General Public License as published by
 
14
# Copyright © 2008-2019 Teddy Hogeborn
 
15
# Copyright © 2008-2019 Björn Påhlsson
 
16
#
 
17
# This file is part of Mandos.
 
18
#
 
19
# Mandos is free software: you can redistribute it and/or modify it
 
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
 
#     This program is distributed in the hope that it will be useful,
23
 
#     but WITHOUT ANY WARRANTY; without even the implied warranty of
 
24
#     Mandos is distributed in the hope that it will be useful, but
 
25
#     WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
25
27
#     GNU General Public License for more details.
26
 
# 
 
28
#
27
29
# You should have received a copy of the GNU General Public License
28
 
# along with this program.  If not, see
29
 
# <http://www.gnu.org/licenses/>.
30
 
# 
31
 
# Contact the authors at <mandos@fukt.bsnet.se>.
32
 
# 
 
30
# along with Mandos.  If not, see <http://www.gnu.org/licenses/>.
 
31
#
 
32
# Contact the authors at <mandos@recompile.se>.
 
33
#
33
34
 
34
35
from __future__ import (division, absolute_import, print_function,
35
36
                        unicode_literals)
36
37
 
37
 
import SocketServer as socketserver
 
38
try:
 
39
    from future_builtins import *
 
40
except ImportError:
 
41
    pass
 
42
 
 
43
try:
 
44
    import SocketServer as socketserver
 
45
except ImportError:
 
46
    import socketserver
38
47
import socket
39
48
import argparse
40
49
import datetime
41
50
import errno
42
 
import gnutls.crypto
43
 
import gnutls.connection
44
 
import gnutls.errors
45
 
import gnutls.library.functions
46
 
import gnutls.library.constants
47
 
import gnutls.library.types
48
 
import ConfigParser as configparser
 
51
try:
 
52
    import ConfigParser as configparser
 
53
except ImportError:
 
54
    import configparser
49
55
import sys
50
56
import re
51
57
import os
60
66
import struct
61
67
import fcntl
62
68
import functools
63
 
import cPickle as pickle
 
69
try:
 
70
    import cPickle as pickle
 
71
except ImportError:
 
72
    import pickle
64
73
import multiprocessing
 
74
import types
 
75
import binascii
 
76
import tempfile
 
77
import itertools
 
78
import collections
 
79
import codecs
65
80
 
66
81
import dbus
67
82
import dbus.service
68
 
import gobject
69
 
import avahi
 
83
from gi.repository import GLib
70
84
from dbus.mainloop.glib import DBusGMainLoop
71
85
import ctypes
72
86
import ctypes.util
73
87
import xml.dom.minidom
74
88
import inspect
75
89
 
 
90
# Try to find the value of SO_BINDTODEVICE:
76
91
try:
 
92
    # This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
 
93
    # newer, and it is also the most natural place for it:
77
94
    SO_BINDTODEVICE = socket.SO_BINDTODEVICE
78
95
except AttributeError:
79
96
    try:
 
97
        # This is where SO_BINDTODEVICE was up to and including Python
 
98
        # 2.6, and also 3.2:
80
99
        from IN import SO_BINDTODEVICE
81
100
    except ImportError:
82
 
        SO_BINDTODEVICE = None
83
 
 
84
 
 
85
 
version = "1.3.1"
86
 
 
87
 
#logger = logging.getLogger('mandos')
88
 
logger = logging.Logger('mandos')
89
 
syslogger = (logging.handlers.SysLogHandler
90
 
             (facility = logging.handlers.SysLogHandler.LOG_DAEMON,
91
 
              address = str("/dev/log")))
92
 
syslogger.setFormatter(logging.Formatter
93
 
                       ('Mandos [%(process)d]: %(levelname)s:'
94
 
                        ' %(message)s'))
95
 
logger.addHandler(syslogger)
96
 
 
97
 
console = logging.StreamHandler()
98
 
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
99
 
                                       ' %(levelname)s:'
100
 
                                       ' %(message)s'))
101
 
logger.addHandler(console)
 
101
        # In Python 2.7 it seems to have been removed entirely.
 
102
        # Try running the C preprocessor:
 
103
        try:
 
104
            cc = subprocess.Popen(["cc", "--language=c", "-E",
 
105
                                   "/dev/stdin"],
 
106
                                  stdin=subprocess.PIPE,
 
107
                                  stdout=subprocess.PIPE)
 
108
            stdout = cc.communicate(
 
109
                "#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
 
110
            SO_BINDTODEVICE = int(stdout.splitlines()[-1])
 
111
        except (OSError, ValueError, IndexError):
 
112
            # No value found
 
113
            SO_BINDTODEVICE = None
 
114
 
 
115
if sys.version_info.major == 2:
 
116
    str = unicode
 
117
 
 
118
version = "1.8.4"
 
119
stored_state_file = "clients.pickle"
 
120
 
 
121
logger = logging.getLogger()
 
122
syslogger = None
 
123
 
 
124
try:
 
125
    if_nametoindex = ctypes.cdll.LoadLibrary(
 
126
        ctypes.util.find_library("c")).if_nametoindex
 
127
except (OSError, AttributeError):
 
128
 
 
129
    def if_nametoindex(interface):
 
130
        "Get an interface index the hard way, i.e. using fcntl()"
 
131
        SIOCGIFINDEX = 0x8933  # From /usr/include/linux/sockios.h
 
132
        with contextlib.closing(socket.socket()) as s:
 
133
            ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
 
134
                                struct.pack(b"16s16x", interface))
 
135
        interface_index = struct.unpack("I", ifreq[16:20])[0]
 
136
        return interface_index
 
137
 
 
138
 
 
139
def copy_function(func):
 
140
    """Make a copy of a function"""
 
141
    if sys.version_info.major == 2:
 
142
        return types.FunctionType(func.func_code,
 
143
                                  func.func_globals,
 
144
                                  func.func_name,
 
145
                                  func.func_defaults,
 
146
                                  func.func_closure)
 
147
    else:
 
148
        return types.FunctionType(func.__code__,
 
149
                                  func.__globals__,
 
150
                                  func.__name__,
 
151
                                  func.__defaults__,
 
152
                                  func.__closure__)
 
153
 
 
154
 
 
155
def initlogger(debug, level=logging.WARNING):
 
156
    """init logger and add loglevel"""
 
157
 
 
158
    global syslogger
 
159
    syslogger = (logging.handlers.SysLogHandler(
 
160
        facility=logging.handlers.SysLogHandler.LOG_DAEMON,
 
161
        address="/dev/log"))
 
162
    syslogger.setFormatter(logging.Formatter
 
163
                           ('Mandos [%(process)d]: %(levelname)s:'
 
164
                            ' %(message)s'))
 
165
    logger.addHandler(syslogger)
 
166
 
 
167
    if debug:
 
168
        console = logging.StreamHandler()
 
169
        console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
 
170
                                               ' [%(process)d]:'
 
171
                                               ' %(levelname)s:'
 
172
                                               ' %(message)s'))
 
173
        logger.addHandler(console)
 
174
    logger.setLevel(level)
 
175
 
 
176
 
 
177
class PGPError(Exception):
 
178
    """Exception if encryption/decryption fails"""
 
179
    pass
 
180
 
 
181
 
 
182
class PGPEngine(object):
 
183
    """A simple class for OpenPGP symmetric encryption & decryption"""
 
184
 
 
185
    def __init__(self):
 
186
        self.tempdir = tempfile.mkdtemp(prefix="mandos-")
 
187
        self.gpg = "gpg"
 
188
        try:
 
189
            output = subprocess.check_output(["gpgconf"])
 
190
            for line in output.splitlines():
 
191
                name, text, path = line.split(b":")
 
192
                if name == "gpg":
 
193
                    self.gpg = path
 
194
                    break
 
195
        except OSError as e:
 
196
            if e.errno != errno.ENOENT:
 
197
                raise
 
198
        self.gnupgargs = ['--batch',
 
199
                          '--homedir', self.tempdir,
 
200
                          '--force-mdc',
 
201
                          '--quiet']
 
202
        # Only GPG version 1 has the --no-use-agent option.
 
203
        if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
 
204
            self.gnupgargs.append("--no-use-agent")
 
205
 
 
206
    def __enter__(self):
 
207
        return self
 
208
 
 
209
    def __exit__(self, exc_type, exc_value, traceback):
 
210
        self._cleanup()
 
211
        return False
 
212
 
 
213
    def __del__(self):
 
214
        self._cleanup()
 
215
 
 
216
    def _cleanup(self):
 
217
        if self.tempdir is not None:
 
218
            # Delete contents of tempdir
 
219
            for root, dirs, files in os.walk(self.tempdir,
 
220
                                             topdown=False):
 
221
                for filename in files:
 
222
                    os.remove(os.path.join(root, filename))
 
223
                for dirname in dirs:
 
224
                    os.rmdir(os.path.join(root, dirname))
 
225
            # Remove tempdir
 
226
            os.rmdir(self.tempdir)
 
227
            self.tempdir = None
 
228
 
 
229
    def password_encode(self, password):
 
230
        # Passphrase can not be empty and can not contain newlines or
 
231
        # NUL bytes.  So we prefix it and hex encode it.
 
232
        encoded = b"mandos" + binascii.hexlify(password)
 
233
        if len(encoded) > 2048:
 
234
            # GnuPG can't handle long passwords, so encode differently
 
235
            encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
 
236
                       .replace(b"\n", b"\\n")
 
237
                       .replace(b"\0", b"\\x00"))
 
238
        return encoded
 
239
 
 
240
    def encrypt(self, data, password):
 
241
        passphrase = self.password_encode(password)
 
242
        with tempfile.NamedTemporaryFile(
 
243
                dir=self.tempdir) as passfile:
 
244
            passfile.write(passphrase)
 
245
            passfile.flush()
 
246
            proc = subprocess.Popen([self.gpg, '--symmetric',
 
247
                                     '--passphrase-file',
 
248
                                     passfile.name]
 
249
                                    + self.gnupgargs,
 
250
                                    stdin=subprocess.PIPE,
 
251
                                    stdout=subprocess.PIPE,
 
252
                                    stderr=subprocess.PIPE)
 
253
            ciphertext, err = proc.communicate(input=data)
 
254
        if proc.returncode != 0:
 
255
            raise PGPError(err)
 
256
        return ciphertext
 
257
 
 
258
    def decrypt(self, data, password):
 
259
        passphrase = self.password_encode(password)
 
260
        with tempfile.NamedTemporaryFile(
 
261
                dir=self.tempdir) as passfile:
 
262
            passfile.write(passphrase)
 
263
            passfile.flush()
 
264
            proc = subprocess.Popen([self.gpg, '--decrypt',
 
265
                                     '--passphrase-file',
 
266
                                     passfile.name]
 
267
                                    + self.gnupgargs,
 
268
                                    stdin=subprocess.PIPE,
 
269
                                    stdout=subprocess.PIPE,
 
270
                                    stderr=subprocess.PIPE)
 
271
            decrypted_plaintext, err = proc.communicate(input=data)
 
272
        if proc.returncode != 0:
 
273
            raise PGPError(err)
 
274
        return decrypted_plaintext
 
275
 
 
276
 
 
277
# Pretend that we have an Avahi module
 
278
class avahi(object):
 
279
    """This isn't so much a class as it is a module-like namespace."""
 
280
    IF_UNSPEC = -1               # avahi-common/address.h
 
281
    PROTO_UNSPEC = -1            # avahi-common/address.h
 
282
    PROTO_INET = 0               # avahi-common/address.h
 
283
    PROTO_INET6 = 1              # avahi-common/address.h
 
284
    DBUS_NAME = "org.freedesktop.Avahi"
 
285
    DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
 
286
    DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
 
287
    DBUS_PATH_SERVER = "/"
 
288
 
 
289
    @staticmethod
 
290
    def string_array_to_txt_array(t):
 
291
        return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
 
292
                           for s in t), signature="ay")
 
293
    ENTRY_GROUP_ESTABLISHED = 2  # avahi-common/defs.h
 
294
    ENTRY_GROUP_COLLISION = 3    # avahi-common/defs.h
 
295
    ENTRY_GROUP_FAILURE = 4      # avahi-common/defs.h
 
296
    SERVER_INVALID = 0           # avahi-common/defs.h
 
297
    SERVER_REGISTERING = 1       # avahi-common/defs.h
 
298
    SERVER_RUNNING = 2           # avahi-common/defs.h
 
299
    SERVER_COLLISION = 3         # avahi-common/defs.h
 
300
    SERVER_FAILURE = 4           # avahi-common/defs.h
 
301
 
102
302
 
103
303
class AvahiError(Exception):
104
304
    def __init__(self, value, *args, **kwargs):
105
305
        self.value = value
106
 
        super(AvahiError, self).__init__(value, *args, **kwargs)
107
 
    def __unicode__(self):
108
 
        return unicode(repr(self.value))
 
306
        return super(AvahiError, self).__init__(value, *args,
 
307
                                                **kwargs)
 
308
 
109
309
 
110
310
class AvahiServiceError(AvahiError):
111
311
    pass
112
312
 
 
313
 
113
314
class AvahiGroupError(AvahiError):
114
315
    pass
115
316
 
116
317
 
117
318
class AvahiService(object):
118
319
    """An Avahi (Zeroconf) service.
119
 
    
 
320
 
120
321
    Attributes:
121
322
    interface: integer; avahi.IF_UNSPEC or an interface index.
122
323
               Used to optionally bind to the specified interface.
123
324
    name: string; Example: 'Mandos'
124
325
    type: string; Example: '_mandos._tcp'.
125
 
                  See <http://www.dns-sd.org/ServiceTypes.html>
 
326
     See <https://www.iana.org/assignments/service-names-port-numbers>
126
327
    port: integer; what port to announce
127
328
    TXT: list of strings; TXT record for the service
128
329
    domain: string; Domain to publish on, default to .local if empty.
134
335
    server: D-Bus Server
135
336
    bus: dbus.SystemBus()
136
337
    """
137
 
    def __init__(self, interface = avahi.IF_UNSPEC, name = None,
138
 
                 servicetype = None, port = None, TXT = None,
139
 
                 domain = "", host = "", max_renames = 32768,
140
 
                 protocol = avahi.PROTO_UNSPEC, bus = None):
 
338
 
 
339
    def __init__(self,
 
340
                 interface=avahi.IF_UNSPEC,
 
341
                 name=None,
 
342
                 servicetype=None,
 
343
                 port=None,
 
344
                 TXT=None,
 
345
                 domain="",
 
346
                 host="",
 
347
                 max_renames=32768,
 
348
                 protocol=avahi.PROTO_UNSPEC,
 
349
                 bus=None):
141
350
        self.interface = interface
142
351
        self.name = name
143
352
        self.type = servicetype
152
361
        self.server = None
153
362
        self.bus = bus
154
363
        self.entry_group_state_changed_match = None
155
 
    def rename(self):
 
364
 
 
365
    def rename(self, remove=True):
156
366
        """Derived from the Avahi example code"""
157
367
        if self.rename_count >= self.max_renames:
158
368
            logger.critical("No suitable Zeroconf service name found"
159
369
                            " after %i retries, exiting.",
160
370
                            self.rename_count)
161
371
            raise AvahiServiceError("Too many renames")
162
 
        self.name = unicode(self.server.GetAlternativeServiceName(self.name))
 
372
        self.name = str(
 
373
            self.server.GetAlternativeServiceName(self.name))
 
374
        self.rename_count += 1
163
375
        logger.info("Changing Zeroconf service name to %r ...",
164
376
                    self.name)
165
 
        syslogger.setFormatter(logging.Formatter
166
 
                               ('Mandos (%s) [%%(process)d]:'
167
 
                                ' %%(levelname)s: %%(message)s'
168
 
                                % self.name))
169
 
        self.remove()
 
377
        if remove:
 
378
            self.remove()
170
379
        try:
171
380
            self.add()
172
381
        except dbus.exceptions.DBusException as error:
173
 
            logger.critical("DBusException: %s", error)
174
 
            self.cleanup()
175
 
            os._exit(1)
176
 
        self.rename_count += 1
 
382
            if (error.get_dbus_name()
 
383
                == "org.freedesktop.Avahi.CollisionError"):
 
384
                logger.info("Local Zeroconf service name collision.")
 
385
                return self.rename(remove=False)
 
386
            else:
 
387
                logger.critical("D-Bus Exception", exc_info=error)
 
388
                self.cleanup()
 
389
                os._exit(1)
 
390
 
177
391
    def remove(self):
178
392
        """Derived from the Avahi example code"""
179
393
        if self.entry_group_state_changed_match is not None:
181
395
            self.entry_group_state_changed_match = None
182
396
        if self.group is not None:
183
397
            self.group.Reset()
 
398
 
184
399
    def add(self):
185
400
        """Derived from the Avahi example code"""
186
401
        self.remove()
191
406
                avahi.DBUS_INTERFACE_ENTRY_GROUP)
192
407
        self.entry_group_state_changed_match = (
193
408
            self.group.connect_to_signal(
194
 
                'StateChanged', self .entry_group_state_changed))
 
409
                'StateChanged', self.entry_group_state_changed))
195
410
        logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
196
411
                     self.name, self.type)
197
412
        self.group.AddService(
203
418
            dbus.UInt16(self.port),
204
419
            avahi.string_array_to_txt_array(self.TXT))
205
420
        self.group.Commit()
 
421
 
206
422
    def entry_group_state_changed(self, state, error):
207
423
        """Derived from the Avahi example code"""
208
424
        logger.debug("Avahi entry group state change: %i", state)
209
 
        
 
425
 
210
426
        if state == avahi.ENTRY_GROUP_ESTABLISHED:
211
427
            logger.debug("Zeroconf service established.")
212
428
        elif state == avahi.ENTRY_GROUP_COLLISION:
214
430
            self.rename()
215
431
        elif state == avahi.ENTRY_GROUP_FAILURE:
216
432
            logger.critical("Avahi: Error in group state changed %s",
217
 
                            unicode(error))
218
 
            raise AvahiGroupError("State changed: %s"
219
 
                                  % unicode(error))
 
433
                            str(error))
 
434
            raise AvahiGroupError("State changed: {!s}".format(error))
 
435
 
220
436
    def cleanup(self):
221
437
        """Derived from the Avahi example code"""
222
438
        if self.group is not None:
223
439
            try:
224
440
                self.group.Free()
225
441
            except (dbus.exceptions.UnknownMethodException,
226
 
                    dbus.exceptions.DBusException) as e:
 
442
                    dbus.exceptions.DBusException):
227
443
                pass
228
444
            self.group = None
229
445
        self.remove()
 
446
 
230
447
    def server_state_changed(self, state, error=None):
231
448
        """Derived from the Avahi example code"""
232
449
        logger.debug("Avahi server state change: %i", state)
233
 
        bad_states = { avahi.SERVER_INVALID:
234
 
                           "Zeroconf server invalid",
235
 
                       avahi.SERVER_REGISTERING: None,
236
 
                       avahi.SERVER_COLLISION:
237
 
                           "Zeroconf server name collision",
238
 
                       avahi.SERVER_FAILURE:
239
 
                           "Zeroconf server failure" }
 
450
        bad_states = {
 
451
            avahi.SERVER_INVALID: "Zeroconf server invalid",
 
452
            avahi.SERVER_REGISTERING: None,
 
453
            avahi.SERVER_COLLISION: "Zeroconf server name collision",
 
454
            avahi.SERVER_FAILURE: "Zeroconf server failure",
 
455
        }
240
456
        if state in bad_states:
241
457
            if bad_states[state] is not None:
242
458
                if error is None:
245
461
                    logger.error(bad_states[state] + ": %r", error)
246
462
            self.cleanup()
247
463
        elif state == avahi.SERVER_RUNNING:
248
 
            self.add()
 
464
            try:
 
465
                self.add()
 
466
            except dbus.exceptions.DBusException as error:
 
467
                if (error.get_dbus_name()
 
468
                    == "org.freedesktop.Avahi.CollisionError"):
 
469
                    logger.info("Local Zeroconf service name"
 
470
                                " collision.")
 
471
                    return self.rename(remove=False)
 
472
                else:
 
473
                    logger.critical("D-Bus Exception", exc_info=error)
 
474
                    self.cleanup()
 
475
                    os._exit(1)
249
476
        else:
250
477
            if error is None:
251
478
                logger.debug("Unknown state: %r", state)
252
479
            else:
253
480
                logger.debug("Unknown state: %r: %r", state, error)
 
481
 
254
482
    def activate(self):
255
483
        """Derived from the Avahi example code"""
256
484
        if self.server is None:
260
488
                                    follow_name_owner_changes=True),
261
489
                avahi.DBUS_INTERFACE_SERVER)
262
490
        self.server.connect_to_signal("StateChanged",
263
 
                                 self.server_state_changed)
 
491
                                      self.server_state_changed)
264
492
        self.server_state_changed(self.server.GetState())
265
493
 
266
494
 
267
 
def _timedelta_to_milliseconds(td):
268
 
    "Convert a datetime.timedelta() to milliseconds"
269
 
    return ((td.days * 24 * 60 * 60 * 1000)
270
 
            + (td.seconds * 1000)
271
 
            + (td.microseconds // 1000))
272
 
        
 
495
class AvahiServiceToSyslog(AvahiService):
 
496
    def rename(self, *args, **kwargs):
 
497
        """Add the new name to the syslog messages"""
 
498
        ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
 
499
        syslogger.setFormatter(logging.Formatter(
 
500
            'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
 
501
            .format(self.name)))
 
502
        return ret
 
503
 
 
504
 
 
505
# Pretend that we have a GnuTLS module
 
506
class gnutls(object):
 
507
    """This isn't so much a class as it is a module-like namespace."""
 
508
 
 
509
    library = ctypes.util.find_library("gnutls")
 
510
    if library is None:
 
511
        library = ctypes.util.find_library("gnutls-deb0")
 
512
    _library = ctypes.cdll.LoadLibrary(library)
 
513
    del library
 
514
 
 
515
    # Unless otherwise indicated, the constants and types below are
 
516
    # all from the gnutls/gnutls.h C header file.
 
517
 
 
518
    # Constants
 
519
    E_SUCCESS = 0
 
520
    E_INTERRUPTED = -52
 
521
    E_AGAIN = -28
 
522
    CRT_OPENPGP = 2
 
523
    CRT_RAWPK = 3
 
524
    CLIENT = 2
 
525
    SHUT_RDWR = 0
 
526
    CRD_CERTIFICATE = 1
 
527
    E_NO_CERTIFICATE_FOUND = -49
 
528
    X509_FMT_DER = 0
 
529
    NO_TICKETS = 1<<10
 
530
    ENABLE_RAWPK = 1<<18
 
531
    CTYPE_PEERS = 3
 
532
    KEYID_USE_SHA256 = 1        # gnutls/x509.h
 
533
    OPENPGP_FMT_RAW = 0         # gnutls/openpgp.h
 
534
 
 
535
    # Types
 
536
    class session_int(ctypes.Structure):
 
537
        _fields_ = []
 
538
    session_t = ctypes.POINTER(session_int)
 
539
 
 
540
    class certificate_credentials_st(ctypes.Structure):
 
541
        _fields_ = []
 
542
    certificate_credentials_t = ctypes.POINTER(
 
543
        certificate_credentials_st)
 
544
    certificate_type_t = ctypes.c_int
 
545
 
 
546
    class datum_t(ctypes.Structure):
 
547
        _fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
 
548
                    ('size', ctypes.c_uint)]
 
549
 
 
550
    class openpgp_crt_int(ctypes.Structure):
 
551
        _fields_ = []
 
552
    openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
 
553
    openpgp_crt_fmt_t = ctypes.c_int  # gnutls/openpgp.h
 
554
    log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
 
555
    credentials_type_t = ctypes.c_int
 
556
    transport_ptr_t = ctypes.c_void_p
 
557
    close_request_t = ctypes.c_int
 
558
 
 
559
    # Exceptions
 
560
    class Error(Exception):
 
561
        def __init__(self, message=None, code=None, args=()):
 
562
            # Default usage is by a message string, but if a return
 
563
            # code is passed, convert it to a string with
 
564
            # gnutls.strerror()
 
565
            self.code = code
 
566
            if message is None and code is not None:
 
567
                message = gnutls.strerror(code)
 
568
            return super(gnutls.Error, self).__init__(
 
569
                message, *args)
 
570
 
 
571
    class CertificateSecurityError(Error):
 
572
        pass
 
573
 
 
574
    # Classes
 
575
    class Credentials(object):
 
576
        def __init__(self):
 
577
            self._c_object = gnutls.certificate_credentials_t()
 
578
            gnutls.certificate_allocate_credentials(
 
579
                ctypes.byref(self._c_object))
 
580
            self.type = gnutls.CRD_CERTIFICATE
 
581
 
 
582
        def __del__(self):
 
583
            gnutls.certificate_free_credentials(self._c_object)
 
584
 
 
585
    class ClientSession(object):
 
586
        def __init__(self, socket, credentials=None):
 
587
            self._c_object = gnutls.session_t()
 
588
            gnutls_flags = gnutls.CLIENT
 
589
            if gnutls.check_version("3.5.6"):
 
590
                gnutls_flags |= gnutls.NO_TICKETS
 
591
            if gnutls.has_rawpk:
 
592
                gnutls_flags |= gnutls.ENABLE_RAWPK
 
593
            gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
 
594
            del gnutls_flags
 
595
            gnutls.set_default_priority(self._c_object)
 
596
            gnutls.transport_set_ptr(self._c_object, socket.fileno())
 
597
            gnutls.handshake_set_private_extensions(self._c_object,
 
598
                                                    True)
 
599
            self.socket = socket
 
600
            if credentials is None:
 
601
                credentials = gnutls.Credentials()
 
602
            gnutls.credentials_set(self._c_object, credentials.type,
 
603
                                   ctypes.cast(credentials._c_object,
 
604
                                               ctypes.c_void_p))
 
605
            self.credentials = credentials
 
606
 
 
607
        def __del__(self):
 
608
            gnutls.deinit(self._c_object)
 
609
 
 
610
        def handshake(self):
 
611
            return gnutls.handshake(self._c_object)
 
612
 
 
613
        def send(self, data):
 
614
            data = bytes(data)
 
615
            data_len = len(data)
 
616
            while data_len > 0:
 
617
                data_len -= gnutls.record_send(self._c_object,
 
618
                                               data[-data_len:],
 
619
                                               data_len)
 
620
 
 
621
        def bye(self):
 
622
            return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
 
623
 
 
624
    # Error handling functions
 
625
    def _error_code(result):
 
626
        """A function to raise exceptions on errors, suitable
 
627
        for the 'restype' attribute on ctypes functions"""
 
628
        if result >= 0:
 
629
            return result
 
630
        if result == gnutls.E_NO_CERTIFICATE_FOUND:
 
631
            raise gnutls.CertificateSecurityError(code=result)
 
632
        raise gnutls.Error(code=result)
 
633
 
 
634
    def _retry_on_error(result, func, arguments):
 
635
        """A function to retry on some errors, suitable
 
636
        for the 'errcheck' attribute on ctypes functions"""
 
637
        while result < 0:
 
638
            if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
 
639
                return _error_code(result)
 
640
            result = func(*arguments)
 
641
        return result
 
642
 
 
643
    # Unless otherwise indicated, the function declarations below are
 
644
    # all from the gnutls/gnutls.h C header file.
 
645
 
 
646
    # Functions
 
647
    priority_set_direct = _library.gnutls_priority_set_direct
 
648
    priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
 
649
                                    ctypes.POINTER(ctypes.c_char_p)]
 
650
    priority_set_direct.restype = _error_code
 
651
 
 
652
    init = _library.gnutls_init
 
653
    init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
 
654
    init.restype = _error_code
 
655
 
 
656
    set_default_priority = _library.gnutls_set_default_priority
 
657
    set_default_priority.argtypes = [session_t]
 
658
    set_default_priority.restype = _error_code
 
659
 
 
660
    record_send = _library.gnutls_record_send
 
661
    record_send.argtypes = [session_t, ctypes.c_void_p,
 
662
                            ctypes.c_size_t]
 
663
    record_send.restype = ctypes.c_ssize_t
 
664
    record_send.errcheck = _retry_on_error
 
665
 
 
666
    certificate_allocate_credentials = (
 
667
        _library.gnutls_certificate_allocate_credentials)
 
668
    certificate_allocate_credentials.argtypes = [
 
669
        ctypes.POINTER(certificate_credentials_t)]
 
670
    certificate_allocate_credentials.restype = _error_code
 
671
 
 
672
    certificate_free_credentials = (
 
673
        _library.gnutls_certificate_free_credentials)
 
674
    certificate_free_credentials.argtypes = [
 
675
        certificate_credentials_t]
 
676
    certificate_free_credentials.restype = None
 
677
 
 
678
    handshake_set_private_extensions = (
 
679
        _library.gnutls_handshake_set_private_extensions)
 
680
    handshake_set_private_extensions.argtypes = [session_t,
 
681
                                                 ctypes.c_int]
 
682
    handshake_set_private_extensions.restype = None
 
683
 
 
684
    credentials_set = _library.gnutls_credentials_set
 
685
    credentials_set.argtypes = [session_t, credentials_type_t,
 
686
                                ctypes.c_void_p]
 
687
    credentials_set.restype = _error_code
 
688
 
 
689
    strerror = _library.gnutls_strerror
 
690
    strerror.argtypes = [ctypes.c_int]
 
691
    strerror.restype = ctypes.c_char_p
 
692
 
 
693
    certificate_type_get = _library.gnutls_certificate_type_get
 
694
    certificate_type_get.argtypes = [session_t]
 
695
    certificate_type_get.restype = _error_code
 
696
 
 
697
    certificate_get_peers = _library.gnutls_certificate_get_peers
 
698
    certificate_get_peers.argtypes = [session_t,
 
699
                                      ctypes.POINTER(ctypes.c_uint)]
 
700
    certificate_get_peers.restype = ctypes.POINTER(datum_t)
 
701
 
 
702
    global_set_log_level = _library.gnutls_global_set_log_level
 
703
    global_set_log_level.argtypes = [ctypes.c_int]
 
704
    global_set_log_level.restype = None
 
705
 
 
706
    global_set_log_function = _library.gnutls_global_set_log_function
 
707
    global_set_log_function.argtypes = [log_func]
 
708
    global_set_log_function.restype = None
 
709
 
 
710
    deinit = _library.gnutls_deinit
 
711
    deinit.argtypes = [session_t]
 
712
    deinit.restype = None
 
713
 
 
714
    handshake = _library.gnutls_handshake
 
715
    handshake.argtypes = [session_t]
 
716
    handshake.restype = _error_code
 
717
    handshake.errcheck = _retry_on_error
 
718
 
 
719
    transport_set_ptr = _library.gnutls_transport_set_ptr
 
720
    transport_set_ptr.argtypes = [session_t, transport_ptr_t]
 
721
    transport_set_ptr.restype = None
 
722
 
 
723
    bye = _library.gnutls_bye
 
724
    bye.argtypes = [session_t, close_request_t]
 
725
    bye.restype = _error_code
 
726
    bye.errcheck = _retry_on_error
 
727
 
 
728
    check_version = _library.gnutls_check_version
 
729
    check_version.argtypes = [ctypes.c_char_p]
 
730
    check_version.restype = ctypes.c_char_p
 
731
 
 
732
    _need_version = b"3.3.0"
 
733
    if check_version(_need_version) is None:
 
734
        raise self.Error("Needs GnuTLS {} or later"
 
735
                         .format(_need_version))
 
736
 
 
737
    _tls_rawpk_version = b"3.6.6"
 
738
    has_rawpk = bool(check_version(_tls_rawpk_version))
 
739
 
 
740
    if has_rawpk:
 
741
        # Types
 
742
        class pubkey_st(ctypes.Structure):
 
743
            _fields = []
 
744
        pubkey_t = ctypes.POINTER(pubkey_st)
 
745
 
 
746
        x509_crt_fmt_t = ctypes.c_int
 
747
 
 
748
        # All the function declarations below are from gnutls/abstract.h
 
749
        pubkey_init = _library.gnutls_pubkey_init
 
750
        pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
 
751
        pubkey_init.restype = _error_code
 
752
 
 
753
        pubkey_import = _library.gnutls_pubkey_import
 
754
        pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
 
755
                                  x509_crt_fmt_t]
 
756
        pubkey_import.restype = _error_code
 
757
 
 
758
        pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
 
759
        pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
 
760
                                      ctypes.POINTER(ctypes.c_ubyte),
 
761
                                      ctypes.POINTER(ctypes.c_size_t)]
 
762
        pubkey_get_key_id.restype = _error_code
 
763
 
 
764
        pubkey_deinit = _library.gnutls_pubkey_deinit
 
765
        pubkey_deinit.argtypes = [pubkey_t]
 
766
        pubkey_deinit.restype = None
 
767
    else:
 
768
        # All the function declarations below are from gnutls/openpgp.h
 
769
 
 
770
        openpgp_crt_init = _library.gnutls_openpgp_crt_init
 
771
        openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
 
772
        openpgp_crt_init.restype = _error_code
 
773
 
 
774
        openpgp_crt_import = _library.gnutls_openpgp_crt_import
 
775
        openpgp_crt_import.argtypes = [openpgp_crt_t,
 
776
                                       ctypes.POINTER(datum_t),
 
777
                                       openpgp_crt_fmt_t]
 
778
        openpgp_crt_import.restype = _error_code
 
779
 
 
780
        openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
 
781
        openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
 
782
                                            ctypes.POINTER(ctypes.c_uint)]
 
783
        openpgp_crt_verify_self.restype = _error_code
 
784
 
 
785
        openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
 
786
        openpgp_crt_deinit.argtypes = [openpgp_crt_t]
 
787
        openpgp_crt_deinit.restype = None
 
788
 
 
789
        openpgp_crt_get_fingerprint = (
 
790
            _library.gnutls_openpgp_crt_get_fingerprint)
 
791
        openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
 
792
                                                ctypes.c_void_p,
 
793
                                                ctypes.POINTER(
 
794
                                                    ctypes.c_size_t)]
 
795
        openpgp_crt_get_fingerprint.restype = _error_code
 
796
 
 
797
    if check_version("3.6.4"):
 
798
        certificate_type_get2 = _library.gnutls_certificate_type_get2
 
799
        certificate_type_get2.argtypes = [session_t, ctypes.c_int]
 
800
        certificate_type_get2.restype = _error_code
 
801
 
 
802
    # Remove non-public functions
 
803
    del _error_code, _retry_on_error
 
804
 
 
805
 
 
806
def call_pipe(connection,       # : multiprocessing.Connection
 
807
              func, *args, **kwargs):
 
808
    """This function is meant to be called by multiprocessing.Process
 
809
 
 
810
    This function runs func(*args, **kwargs), and writes the resulting
 
811
    return value on the provided multiprocessing.Connection.
 
812
    """
 
813
    connection.send(func(*args, **kwargs))
 
814
    connection.close()
 
815
 
 
816
 
273
817
class Client(object):
274
818
    """A representation of a client host served by this server.
275
 
    
 
819
 
276
820
    Attributes:
277
 
    _approved:   bool(); 'None' if not yet approved/disapproved
 
821
    approved:   bool(); 'None' if not yet approved/disapproved
278
822
    approval_delay: datetime.timedelta(); Time to wait for approval
279
823
    approval_duration: datetime.timedelta(); Duration of one approval
280
824
    checker:    subprocess.Popen(); a running checker process used
281
825
                                    to see if the client lives.
282
826
                                    'None' if no process is running.
283
 
    checker_callback_tag: a gobject event source tag, or None
 
827
    checker_callback_tag: a GLib event source tag, or None
284
828
    checker_command: string; External command which is run to check
285
829
                     if client lives.  %() expansions are done at
286
830
                     runtime with vars(self) as dict, so that for
287
831
                     instance %(name)s can be used in the command.
288
 
    checker_initiator_tag: a gobject event source tag, or None
 
832
    checker_initiator_tag: a GLib event source tag, or None
289
833
    created:    datetime.datetime(); (UTC) object creation
 
834
    client_structure: Object describing what attributes a client has
 
835
                      and is used for storing the client at exit
290
836
    current_checker_command: string; current running checker_command
291
 
    disable_hook:  If set, called by disable() as disable_hook(self)
292
 
    disable_initiator_tag: a gobject event source tag, or None
 
837
    disable_initiator_tag: a GLib event source tag, or None
293
838
    enabled:    bool()
294
839
    fingerprint: string (40 or 32 hexadecimal digits); used to
295
 
                 uniquely identify the client
 
840
                 uniquely identify an OpenPGP client
 
841
    key_id: string (64 hexadecimal digits); used to uniquely identify
 
842
            a client using raw public keys
296
843
    host:       string; available for use by the checker command
297
844
    interval:   datetime.timedelta(); How often to start a new checker
298
845
    last_approval_request: datetime.datetime(); (UTC) or None
299
846
    last_checked_ok: datetime.datetime(); (UTC) or None
300
 
    last_enabled: datetime.datetime(); (UTC)
 
847
    last_checker_status: integer between 0 and 255 reflecting exit
 
848
                         status of last checker. -1 reflects crashed
 
849
                         checker, -2 means no checker completed yet.
 
850
    last_checker_signal: The signal which killed the last checker, if
 
851
                         last_checker_status is -1
 
852
    last_enabled: datetime.datetime(); (UTC) or None
301
853
    name:       string; from the config file, used in log messages and
302
854
                        D-Bus identifiers
303
855
    secret:     bytestring; sent verbatim (over TLS) to client
304
856
    timeout:    datetime.timedelta(); How long from last_checked_ok
305
857
                                      until this client is disabled
306
 
    extended_timeout:   extra long timeout when password has been sent
 
858
    extended_timeout:   extra long timeout when secret has been sent
307
859
    runtime_expansions: Allowed attributes for runtime expansion.
308
860
    expires:    datetime.datetime(); time (UTC) when a client will be
309
861
                disabled, or None
 
862
    server_settings: The server_settings dict from main()
310
863
    """
311
 
    
 
864
 
312
865
    runtime_expansions = ("approval_delay", "approval_duration",
313
 
                          "created", "enabled", "fingerprint",
314
 
                          "host", "interval", "last_checked_ok",
 
866
                          "created", "enabled", "expires", "key_id",
 
867
                          "fingerprint", "host", "interval",
 
868
                          "last_approval_request", "last_checked_ok",
315
869
                          "last_enabled", "name", "timeout")
316
 
    
317
 
    def timeout_milliseconds(self):
318
 
        "Return the 'timeout' attribute in milliseconds"
319
 
        return _timedelta_to_milliseconds(self.timeout)
320
 
    
321
 
    def extended_timeout_milliseconds(self):
322
 
        "Return the 'extended_timeout' attribute in milliseconds"
323
 
        return _timedelta_to_milliseconds(self.extended_timeout)    
324
 
    
325
 
    def interval_milliseconds(self):
326
 
        "Return the 'interval' attribute in milliseconds"
327
 
        return _timedelta_to_milliseconds(self.interval)
328
 
    
329
 
    def approval_delay_milliseconds(self):
330
 
        return _timedelta_to_milliseconds(self.approval_delay)
331
 
    
332
 
    def __init__(self, name = None, disable_hook=None, config=None):
333
 
        """Note: the 'checker' key in 'config' sets the
334
 
        'checker_command' attribute and *not* the 'checker'
335
 
        attribute."""
 
870
    client_defaults = {
 
871
        "timeout": "PT5M",
 
872
        "extended_timeout": "PT15M",
 
873
        "interval": "PT2M",
 
874
        "checker": "fping -q -- %%(host)s",
 
875
        "host": "",
 
876
        "approval_delay": "PT0S",
 
877
        "approval_duration": "PT1S",
 
878
        "approved_by_default": "True",
 
879
        "enabled": "True",
 
880
    }
 
881
 
 
882
    @staticmethod
 
883
    def config_parser(config):
 
884
        """Construct a new dict of client settings of this form:
 
885
        { client_name: {setting_name: value, ...}, ...}
 
886
        with exceptions for any special settings as defined above.
 
887
        NOTE: Must be a pure function. Must return the same result
 
888
        value given the same arguments.
 
889
        """
 
890
        settings = {}
 
891
        for client_name in config.sections():
 
892
            section = dict(config.items(client_name))
 
893
            client = settings[client_name] = {}
 
894
 
 
895
            client["host"] = section["host"]
 
896
            # Reformat values from string types to Python types
 
897
            client["approved_by_default"] = config.getboolean(
 
898
                client_name, "approved_by_default")
 
899
            client["enabled"] = config.getboolean(client_name,
 
900
                                                  "enabled")
 
901
 
 
902
            # Uppercase and remove spaces from key_id and fingerprint
 
903
            # for later comparison purposes with return value from the
 
904
            # key_id() and fingerprint() functions
 
905
            client["key_id"] = (section.get("key_id", "").upper()
 
906
                                .replace(" ", ""))
 
907
            client["fingerprint"] = (section["fingerprint"].upper()
 
908
                                     .replace(" ", ""))
 
909
            if "secret" in section:
 
910
                client["secret"] = codecs.decode(section["secret"]
 
911
                                                 .encode("utf-8"),
 
912
                                                 "base64")
 
913
            elif "secfile" in section:
 
914
                with open(os.path.expanduser(os.path.expandvars
 
915
                                             (section["secfile"])),
 
916
                          "rb") as secfile:
 
917
                    client["secret"] = secfile.read()
 
918
            else:
 
919
                raise TypeError("No secret or secfile for section {}"
 
920
                                .format(section))
 
921
            client["timeout"] = string_to_delta(section["timeout"])
 
922
            client["extended_timeout"] = string_to_delta(
 
923
                section["extended_timeout"])
 
924
            client["interval"] = string_to_delta(section["interval"])
 
925
            client["approval_delay"] = string_to_delta(
 
926
                section["approval_delay"])
 
927
            client["approval_duration"] = string_to_delta(
 
928
                section["approval_duration"])
 
929
            client["checker_command"] = section["checker"]
 
930
            client["last_approval_request"] = None
 
931
            client["last_checked_ok"] = None
 
932
            client["last_checker_status"] = -2
 
933
 
 
934
        return settings
 
935
 
 
936
    def __init__(self, settings, name=None, server_settings=None):
336
937
        self.name = name
337
 
        if config is None:
338
 
            config = {}
 
938
        if server_settings is None:
 
939
            server_settings = {}
 
940
        self.server_settings = server_settings
 
941
        # adding all client settings
 
942
        for setting, value in settings.items():
 
943
            setattr(self, setting, value)
 
944
 
 
945
        if self.enabled:
 
946
            if not hasattr(self, "last_enabled"):
 
947
                self.last_enabled = datetime.datetime.utcnow()
 
948
            if not hasattr(self, "expires"):
 
949
                self.expires = (datetime.datetime.utcnow()
 
950
                                + self.timeout)
 
951
        else:
 
952
            self.last_enabled = None
 
953
            self.expires = None
 
954
 
339
955
        logger.debug("Creating client %r", self.name)
340
 
        # Uppercase and remove spaces from fingerprint for later
341
 
        # comparison purposes with return value from the fingerprint()
342
 
        # function
343
 
        self.fingerprint = (config["fingerprint"].upper()
344
 
                            .replace(" ", ""))
 
956
        logger.debug("  Key ID: %s", self.key_id)
345
957
        logger.debug("  Fingerprint: %s", self.fingerprint)
346
 
        if "secret" in config:
347
 
            self.secret = config["secret"].decode("base64")
348
 
        elif "secfile" in config:
349
 
            with open(os.path.expanduser(os.path.expandvars
350
 
                                         (config["secfile"])),
351
 
                      "rb") as secfile:
352
 
                self.secret = secfile.read()
353
 
        else:
354
 
            raise TypeError("No secret or secfile for client %s"
355
 
                            % self.name)
356
 
        self.host = config.get("host", "")
357
 
        self.created = datetime.datetime.utcnow()
358
 
        self.enabled = False
359
 
        self.last_approval_request = None
360
 
        self.last_enabled = None
361
 
        self.last_checked_ok = None
362
 
        self.timeout = string_to_delta(config["timeout"])
363
 
        self.extended_timeout = string_to_delta(config["extended_timeout"])
364
 
        self.interval = string_to_delta(config["interval"])
365
 
        self.disable_hook = disable_hook
 
958
        self.created = settings.get("created",
 
959
                                    datetime.datetime.utcnow())
 
960
 
 
961
        # attributes specific for this server instance
366
962
        self.checker = None
367
963
        self.checker_initiator_tag = None
368
964
        self.disable_initiator_tag = None
369
 
        self.expires = None
370
965
        self.checker_callback_tag = None
371
 
        self.checker_command = config["checker"]
372
966
        self.current_checker_command = None
373
 
        self.last_connect = None
374
 
        self._approved = None
375
 
        self.approved_by_default = config.get("approved_by_default",
376
 
                                              True)
 
967
        self.approved = None
377
968
        self.approvals_pending = 0
378
 
        self.approval_delay = string_to_delta(
379
 
            config["approval_delay"])
380
 
        self.approval_duration = string_to_delta(
381
 
            config["approval_duration"])
382
 
        self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
383
 
    
 
969
        self.changedstate = multiprocessing_manager.Condition(
 
970
            multiprocessing_manager.Lock())
 
971
        self.client_structure = [attr
 
972
                                 for attr in self.__dict__.keys()
 
973
                                 if not attr.startswith("_")]
 
974
        self.client_structure.append("client_structure")
 
975
 
 
976
        for name, t in inspect.getmembers(
 
977
                type(self), lambda obj: isinstance(obj, property)):
 
978
            if not name.startswith("_"):
 
979
                self.client_structure.append(name)
 
980
 
 
981
    # Send notice to process children that client state has changed
384
982
    def send_changedstate(self):
385
 
        self.changedstate.acquire()
386
 
        self.changedstate.notify_all()
387
 
        self.changedstate.release()
388
 
        
 
983
        with self.changedstate:
 
984
            self.changedstate.notify_all()
 
985
 
389
986
    def enable(self):
390
987
        """Start this client's checker and timeout hooks"""
391
988
        if getattr(self, "enabled", False):
392
989
            # Already enabled
393
990
            return
394
 
        self.send_changedstate()
395
 
        # Schedule a new checker to be started an 'interval' from now,
396
 
        # and every interval from then on.
397
 
        self.checker_initiator_tag = (gobject.timeout_add
398
 
                                      (self.interval_milliseconds(),
399
 
                                       self.start_checker))
400
 
        # Schedule a disable() when 'timeout' has passed
401
991
        self.expires = datetime.datetime.utcnow() + self.timeout
402
 
        self.disable_initiator_tag = (gobject.timeout_add
403
 
                                   (self.timeout_milliseconds(),
404
 
                                    self.disable))
405
992
        self.enabled = True
406
993
        self.last_enabled = datetime.datetime.utcnow()
407
 
        # Also start a new checker *right now*.
408
 
        self.start_checker()
409
 
    
 
994
        self.init_checker()
 
995
        self.send_changedstate()
 
996
 
410
997
    def disable(self, quiet=True):
411
998
        """Disable this client."""
412
999
        if not getattr(self, "enabled", False):
413
1000
            return False
414
1001
        if not quiet:
415
 
            self.send_changedstate()
416
 
        if not quiet:
417
1002
            logger.info("Disabling client %s", self.name)
418
 
        if getattr(self, "disable_initiator_tag", False):
419
 
            gobject.source_remove(self.disable_initiator_tag)
 
1003
        if getattr(self, "disable_initiator_tag", None) is not None:
 
1004
            GLib.source_remove(self.disable_initiator_tag)
420
1005
            self.disable_initiator_tag = None
421
1006
        self.expires = None
422
 
        if getattr(self, "checker_initiator_tag", False):
423
 
            gobject.source_remove(self.checker_initiator_tag)
 
1007
        if getattr(self, "checker_initiator_tag", None) is not None:
 
1008
            GLib.source_remove(self.checker_initiator_tag)
424
1009
            self.checker_initiator_tag = None
425
1010
        self.stop_checker()
426
 
        if self.disable_hook:
427
 
            self.disable_hook(self)
428
1011
        self.enabled = False
429
 
        # Do not run this again if called by a gobject.timeout_add
 
1012
        if not quiet:
 
1013
            self.send_changedstate()
 
1014
        # Do not run this again if called by a GLib.timeout_add
430
1015
        return False
431
 
    
 
1016
 
432
1017
    def __del__(self):
433
 
        self.disable_hook = None
434
1018
        self.disable()
435
 
    
436
 
    def checker_callback(self, pid, condition, command):
 
1019
 
 
1020
    def init_checker(self):
 
1021
        # Schedule a new checker to be started an 'interval' from now,
 
1022
        # and every interval from then on.
 
1023
        if self.checker_initiator_tag is not None:
 
1024
            GLib.source_remove(self.checker_initiator_tag)
 
1025
        self.checker_initiator_tag = GLib.timeout_add(
 
1026
            int(self.interval.total_seconds() * 1000),
 
1027
            self.start_checker)
 
1028
        # Schedule a disable() when 'timeout' has passed
 
1029
        if self.disable_initiator_tag is not None:
 
1030
            GLib.source_remove(self.disable_initiator_tag)
 
1031
        self.disable_initiator_tag = GLib.timeout_add(
 
1032
            int(self.timeout.total_seconds() * 1000), self.disable)
 
1033
        # Also start a new checker *right now*.
 
1034
        self.start_checker()
 
1035
 
 
1036
    def checker_callback(self, source, condition, connection,
 
1037
                         command):
437
1038
        """The checker has completed, so take appropriate actions."""
438
1039
        self.checker_callback_tag = None
439
1040
        self.checker = None
440
 
        if os.WIFEXITED(condition):
441
 
            exitstatus = os.WEXITSTATUS(condition)
442
 
            if exitstatus == 0:
 
1041
        # Read return code from connection (see call_pipe)
 
1042
        returncode = connection.recv()
 
1043
        connection.close()
 
1044
 
 
1045
        if returncode >= 0:
 
1046
            self.last_checker_status = returncode
 
1047
            self.last_checker_signal = None
 
1048
            if self.last_checker_status == 0:
443
1049
                logger.info("Checker for %(name)s succeeded",
444
1050
                            vars(self))
445
1051
                self.checked_ok()
446
1052
            else:
447
 
                logger.info("Checker for %(name)s failed",
448
 
                            vars(self))
 
1053
                logger.info("Checker for %(name)s failed", vars(self))
449
1054
        else:
 
1055
            self.last_checker_status = -1
 
1056
            self.last_checker_signal = -returncode
450
1057
            logger.warning("Checker for %(name)s crashed?",
451
1058
                           vars(self))
452
 
    
453
 
    def checked_ok(self, timeout=None):
454
 
        """Bump up the timeout for this client.
455
 
        
456
 
        This should only be called when the client has been seen,
457
 
        alive and well.
458
 
        """
 
1059
        return False
 
1060
 
 
1061
    def checked_ok(self):
 
1062
        """Assert that the client has been seen, alive and well."""
 
1063
        self.last_checked_ok = datetime.datetime.utcnow()
 
1064
        self.last_checker_status = 0
 
1065
        self.last_checker_signal = None
 
1066
        self.bump_timeout()
 
1067
 
 
1068
    def bump_timeout(self, timeout=None):
 
1069
        """Bump up the timeout for this client."""
459
1070
        if timeout is None:
460
1071
            timeout = self.timeout
461
 
        self.last_checked_ok = datetime.datetime.utcnow()
462
 
        gobject.source_remove(self.disable_initiator_tag)
463
 
        self.expires = datetime.datetime.utcnow() + timeout
464
 
        self.disable_initiator_tag = (gobject.timeout_add
465
 
                                      (_timedelta_to_milliseconds(timeout),
466
 
                                       self.disable))
467
 
    
 
1072
        if self.disable_initiator_tag is not None:
 
1073
            GLib.source_remove(self.disable_initiator_tag)
 
1074
            self.disable_initiator_tag = None
 
1075
        if getattr(self, "enabled", False):
 
1076
            self.disable_initiator_tag = GLib.timeout_add(
 
1077
                int(timeout.total_seconds() * 1000), self.disable)
 
1078
            self.expires = datetime.datetime.utcnow() + timeout
 
1079
 
468
1080
    def need_approval(self):
469
1081
        self.last_approval_request = datetime.datetime.utcnow()
470
 
    
 
1082
 
471
1083
    def start_checker(self):
472
1084
        """Start a new checker subprocess if one is not running.
473
 
        
 
1085
 
474
1086
        If a checker already exists, leave it running and do
475
1087
        nothing."""
476
1088
        # The reason for not killing a running checker is that if we
477
 
        # did that, then if a checker (for some reason) started
478
 
        # running slowly and taking more than 'interval' time, the
479
 
        # client would inevitably timeout, since no checker would get
480
 
        # a chance to run to completion.  If we instead leave running
 
1089
        # did that, and if a checker (for some reason) started running
 
1090
        # slowly and taking more than 'interval' time, then the client
 
1091
        # would inevitably timeout, since no checker would get a
 
1092
        # chance to run to completion.  If we instead leave running
481
1093
        # checkers alone, the checker would have to take more time
482
1094
        # than 'timeout' for the client to be disabled, which is as it
483
1095
        # should be.
484
 
        
485
 
        # If a checker exists, make sure it is not a zombie
486
 
        try:
487
 
            pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
488
 
        except (AttributeError, OSError) as error:
489
 
            if (isinstance(error, OSError)
490
 
                and error.errno != errno.ECHILD):
491
 
                raise error
492
 
        else:
493
 
            if pid:
494
 
                logger.warning("Checker was a zombie")
495
 
                gobject.source_remove(self.checker_callback_tag)
496
 
                self.checker_callback(pid, status,
497
 
                                      self.current_checker_command)
 
1096
 
 
1097
        if self.checker is not None and not self.checker.is_alive():
 
1098
            logger.warning("Checker was not alive; joining")
 
1099
            self.checker.join()
 
1100
            self.checker = None
498
1101
        # Start a new checker if needed
499
1102
        if self.checker is None:
 
1103
            # Escape attributes for the shell
 
1104
            escaped_attrs = {
 
1105
                attr: re.escape(str(getattr(self, attr)))
 
1106
                for attr in self.runtime_expansions}
500
1107
            try:
501
 
                # In case checker_command has exactly one % operator
502
 
                command = self.checker_command % self.host
503
 
            except TypeError:
504
 
                # Escape attributes for the shell
505
 
                escaped_attrs = dict(
506
 
                    (attr,
507
 
                     re.escape(unicode(str(getattr(self, attr, "")),
508
 
                                       errors=
509
 
                                       'replace')))
510
 
                    for attr in
511
 
                    self.runtime_expansions)
512
 
                
513
 
                try:
514
 
                    command = self.checker_command % escaped_attrs
515
 
                except TypeError as error:
516
 
                    logger.error('Could not format string "%s":'
517
 
                                 ' %s', self.checker_command, error)
518
 
                    return True # Try again later
 
1108
                command = self.checker_command % escaped_attrs
 
1109
            except TypeError as error:
 
1110
                logger.error('Could not format string "%s"',
 
1111
                             self.checker_command,
 
1112
                             exc_info=error)
 
1113
                return True     # Try again later
519
1114
            self.current_checker_command = command
520
 
            try:
521
 
                logger.info("Starting checker %r for %s",
522
 
                            command, self.name)
523
 
                # We don't need to redirect stdout and stderr, since
524
 
                # in normal mode, that is already done by daemon(),
525
 
                # and in debug mode we don't want to.  (Stdin is
526
 
                # always replaced by /dev/null.)
527
 
                self.checker = subprocess.Popen(command,
528
 
                                                close_fds=True,
529
 
                                                shell=True, cwd="/")
530
 
                self.checker_callback_tag = (gobject.child_watch_add
531
 
                                             (self.checker.pid,
532
 
                                              self.checker_callback,
533
 
                                              data=command))
534
 
                # The checker may have completed before the gobject
535
 
                # watch was added.  Check for this.
536
 
                pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
537
 
                if pid:
538
 
                    gobject.source_remove(self.checker_callback_tag)
539
 
                    self.checker_callback(pid, status, command)
540
 
            except OSError as error:
541
 
                logger.error("Failed to start subprocess: %s",
542
 
                             error)
543
 
        # Re-run this periodically if run by gobject.timeout_add
 
1115
            logger.info("Starting checker %r for %s", command,
 
1116
                        self.name)
 
1117
            # We don't need to redirect stdout and stderr, since
 
1118
            # in normal mode, that is already done by daemon(),
 
1119
            # and in debug mode we don't want to.  (Stdin is
 
1120
            # always replaced by /dev/null.)
 
1121
            # The exception is when not debugging but nevertheless
 
1122
            # running in the foreground; use the previously
 
1123
            # created wnull.
 
1124
            popen_args = {"close_fds": True,
 
1125
                          "shell": True,
 
1126
                          "cwd": "/"}
 
1127
            if (not self.server_settings["debug"]
 
1128
                and self.server_settings["foreground"]):
 
1129
                popen_args.update({"stdout": wnull,
 
1130
                                   "stderr": wnull})
 
1131
            pipe = multiprocessing.Pipe(duplex=False)
 
1132
            self.checker = multiprocessing.Process(
 
1133
                target=call_pipe,
 
1134
                args=(pipe[1], subprocess.call, command),
 
1135
                kwargs=popen_args)
 
1136
            self.checker.start()
 
1137
            self.checker_callback_tag = GLib.io_add_watch(
 
1138
                pipe[0].fileno(), GLib.IO_IN,
 
1139
                self.checker_callback, pipe[0], command)
 
1140
        # Re-run this periodically if run by GLib.timeout_add
544
1141
        return True
545
 
    
 
1142
 
546
1143
    def stop_checker(self):
547
1144
        """Force the checker process, if any, to stop."""
548
1145
        if self.checker_callback_tag:
549
 
            gobject.source_remove(self.checker_callback_tag)
 
1146
            GLib.source_remove(self.checker_callback_tag)
550
1147
            self.checker_callback_tag = None
551
1148
        if getattr(self, "checker", None) is None:
552
1149
            return
553
1150
        logger.debug("Stopping checker for %(name)s", vars(self))
554
 
        try:
555
 
            os.kill(self.checker.pid, signal.SIGTERM)
556
 
            #time.sleep(0.5)
557
 
            #if self.checker.poll() is None:
558
 
            #    os.kill(self.checker.pid, signal.SIGKILL)
559
 
        except OSError as error:
560
 
            if error.errno != errno.ESRCH: # No such process
561
 
                raise
 
1151
        self.checker.terminate()
562
1152
        self.checker = None
563
1153
 
564
1154
 
565
 
def dbus_service_property(dbus_interface, signature="v",
566
 
                          access="readwrite", byte_arrays=False):
 
1155
def dbus_service_property(dbus_interface,
 
1156
                          signature="v",
 
1157
                          access="readwrite",
 
1158
                          byte_arrays=False):
567
1159
    """Decorators for marking methods of a DBusObjectWithProperties to
568
1160
    become properties on the D-Bus.
569
 
    
 
1161
 
570
1162
    The decorated method will be called with no arguments by "Get"
571
1163
    and with one argument by "Set".
572
 
    
 
1164
 
573
1165
    The parameters, where they are supported, are the same as
574
1166
    dbus.service.method, except there is only "signature", since the
575
1167
    type from Get() and the type sent to Set() is the same.
578
1170
    # "Set" method, so we fail early here:
579
1171
    if byte_arrays and signature != "ay":
580
1172
        raise ValueError("Byte arrays not supported for non-'ay'"
581
 
                         " signature %r" % signature)
 
1173
                         " signature {!r}".format(signature))
 
1174
 
582
1175
    def decorator(func):
583
1176
        func._dbus_is_property = True
584
1177
        func._dbus_interface = dbus_interface
587
1180
        func._dbus_name = func.__name__
588
1181
        if func._dbus_name.endswith("_dbus_property"):
589
1182
            func._dbus_name = func._dbus_name[:-14]
590
 
        func._dbus_get_args_options = {'byte_arrays': byte_arrays }
591
 
        return func
 
1183
        func._dbus_get_args_options = {'byte_arrays': byte_arrays}
 
1184
        return func
 
1185
 
 
1186
    return decorator
 
1187
 
 
1188
 
 
1189
def dbus_interface_annotations(dbus_interface):
 
1190
    """Decorator for marking functions returning interface annotations
 
1191
 
 
1192
    Usage:
 
1193
 
 
1194
    @dbus_interface_annotations("org.example.Interface")
 
1195
    def _foo(self):  # Function name does not matter
 
1196
        return {"org.freedesktop.DBus.Deprecated": "true",
 
1197
                "org.freedesktop.DBus.Property.EmitsChangedSignal":
 
1198
                    "false"}
 
1199
    """
 
1200
 
 
1201
    def decorator(func):
 
1202
        func._dbus_is_interface = True
 
1203
        func._dbus_interface = dbus_interface
 
1204
        func._dbus_name = dbus_interface
 
1205
        return func
 
1206
 
 
1207
    return decorator
 
1208
 
 
1209
 
 
1210
def dbus_annotations(annotations):
 
1211
    """Decorator to annotate D-Bus methods, signals or properties
 
1212
    Usage:
 
1213
 
 
1214
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
 
1215
                       "org.freedesktop.DBus.Property."
 
1216
                       "EmitsChangedSignal": "false"})
 
1217
    @dbus_service_property("org.example.Interface", signature="b",
 
1218
                           access="r")
 
1219
    def Property_dbus_property(self):
 
1220
        return dbus.Boolean(False)
 
1221
 
 
1222
    See also the DBusObjectWithAnnotations class.
 
1223
    """
 
1224
 
 
1225
    def decorator(func):
 
1226
        func._dbus_annotations = annotations
 
1227
        return func
 
1228
 
592
1229
    return decorator
593
1230
 
594
1231
 
595
1232
class DBusPropertyException(dbus.exceptions.DBusException):
596
1233
    """A base class for D-Bus property-related exceptions
597
1234
    """
598
 
    def __unicode__(self):
599
 
        return unicode(str(self))
 
1235
    pass
600
1236
 
601
1237
 
602
1238
class DBusPropertyAccessException(DBusPropertyException):
611
1247
    pass
612
1248
 
613
1249
 
614
 
class DBusObjectWithProperties(dbus.service.Object):
 
1250
class DBusObjectWithAnnotations(dbus.service.Object):
 
1251
    """A D-Bus object with annotations.
 
1252
 
 
1253
    Classes inheriting from this can use the dbus_annotations
 
1254
    decorator to add annotations to methods or signals.
 
1255
    """
 
1256
 
 
1257
    @staticmethod
 
1258
    def _is_dbus_thing(thing):
 
1259
        """Returns a function testing if an attribute is a D-Bus thing
 
1260
 
 
1261
        If called like _is_dbus_thing("method") it returns a function
 
1262
        suitable for use as predicate to inspect.getmembers().
 
1263
        """
 
1264
        return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
 
1265
                                   False)
 
1266
 
 
1267
    def _get_all_dbus_things(self, thing):
 
1268
        """Returns a generator of (name, attribute) pairs
 
1269
        """
 
1270
        return ((getattr(athing.__get__(self), "_dbus_name", name),
 
1271
                 athing.__get__(self))
 
1272
                for cls in self.__class__.__mro__
 
1273
                for name, athing in
 
1274
                inspect.getmembers(cls, self._is_dbus_thing(thing)))
 
1275
 
 
1276
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
 
1277
                         out_signature="s",
 
1278
                         path_keyword='object_path',
 
1279
                         connection_keyword='connection')
 
1280
    def Introspect(self, object_path, connection):
 
1281
        """Overloading of standard D-Bus method.
 
1282
 
 
1283
        Inserts annotation tags on methods and signals.
 
1284
        """
 
1285
        xmlstring = dbus.service.Object.Introspect(self, object_path,
 
1286
                                                   connection)
 
1287
        try:
 
1288
            document = xml.dom.minidom.parseString(xmlstring)
 
1289
 
 
1290
            for if_tag in document.getElementsByTagName("interface"):
 
1291
                # Add annotation tags
 
1292
                for typ in ("method", "signal"):
 
1293
                    for tag in if_tag.getElementsByTagName(typ):
 
1294
                        annots = dict()
 
1295
                        for name, prop in (self.
 
1296
                                           _get_all_dbus_things(typ)):
 
1297
                            if (name == tag.getAttribute("name")
 
1298
                                and prop._dbus_interface
 
1299
                                == if_tag.getAttribute("name")):
 
1300
                                annots.update(getattr(
 
1301
                                    prop, "_dbus_annotations", {}))
 
1302
                        for name, value in annots.items():
 
1303
                            ann_tag = document.createElement(
 
1304
                                "annotation")
 
1305
                            ann_tag.setAttribute("name", name)
 
1306
                            ann_tag.setAttribute("value", value)
 
1307
                            tag.appendChild(ann_tag)
 
1308
                # Add interface annotation tags
 
1309
                for annotation, value in dict(
 
1310
                    itertools.chain.from_iterable(
 
1311
                        annotations().items()
 
1312
                        for name, annotations
 
1313
                        in self._get_all_dbus_things("interface")
 
1314
                        if name == if_tag.getAttribute("name")
 
1315
                        )).items():
 
1316
                    ann_tag = document.createElement("annotation")
 
1317
                    ann_tag.setAttribute("name", annotation)
 
1318
                    ann_tag.setAttribute("value", value)
 
1319
                    if_tag.appendChild(ann_tag)
 
1320
                # Fix argument name for the Introspect method itself
 
1321
                if (if_tag.getAttribute("name")
 
1322
                    == dbus.INTROSPECTABLE_IFACE):
 
1323
                    for cn in if_tag.getElementsByTagName("method"):
 
1324
                        if cn.getAttribute("name") == "Introspect":
 
1325
                            for arg in cn.getElementsByTagName("arg"):
 
1326
                                if (arg.getAttribute("direction")
 
1327
                                    == "out"):
 
1328
                                    arg.setAttribute("name",
 
1329
                                                     "xml_data")
 
1330
            xmlstring = document.toxml("utf-8")
 
1331
            document.unlink()
 
1332
        except (AttributeError, xml.dom.DOMException,
 
1333
                xml.parsers.expat.ExpatError) as error:
 
1334
            logger.error("Failed to override Introspection method",
 
1335
                         exc_info=error)
 
1336
        return xmlstring
 
1337
 
 
1338
 
 
1339
class DBusObjectWithProperties(DBusObjectWithAnnotations):
615
1340
    """A D-Bus object with properties.
616
 
    
 
1341
 
617
1342
    Classes inheriting from this can use the dbus_service_property
618
1343
    decorator to expose methods as D-Bus properties.  It exposes the
619
1344
    standard Get(), Set(), and GetAll() methods on the D-Bus.
620
1345
    """
621
 
    
622
 
    @staticmethod
623
 
    def _is_dbus_property(obj):
624
 
        return getattr(obj, "_dbus_is_property", False)
625
 
    
626
 
    def _get_all_dbus_properties(self):
627
 
        """Returns a generator of (name, attribute) pairs
628
 
        """
629
 
        return ((prop._dbus_name, prop)
630
 
                for name, prop in
631
 
                inspect.getmembers(self, self._is_dbus_property))
632
 
    
 
1346
 
633
1347
    def _get_dbus_property(self, interface_name, property_name):
634
1348
        """Returns a bound method if one exists which is a D-Bus
635
1349
        property with the specified name and interface.
636
1350
        """
637
 
        for name in (property_name,
638
 
                     property_name + "_dbus_property"):
639
 
            prop = getattr(self, name, None)
640
 
            if (prop is None
641
 
                or not self._is_dbus_property(prop)
642
 
                or prop._dbus_name != property_name
643
 
                or (interface_name and prop._dbus_interface
644
 
                    and interface_name != prop._dbus_interface)):
645
 
                continue
646
 
            return prop
 
1351
        for cls in self.__class__.__mro__:
 
1352
            for name, value in inspect.getmembers(
 
1353
                    cls, self._is_dbus_thing("property")):
 
1354
                if (value._dbus_name == property_name
 
1355
                    and value._dbus_interface == interface_name):
 
1356
                    return value.__get__(self)
 
1357
 
647
1358
        # No such property
648
 
        raise DBusPropertyNotFound(self.dbus_object_path + ":"
649
 
                                   + interface_name + "."
650
 
                                   + property_name)
651
 
    
652
 
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
 
1359
        raise DBusPropertyNotFound("{}:{}.{}".format(
 
1360
            self.dbus_object_path, interface_name, property_name))
 
1361
 
 
1362
    @classmethod
 
1363
    def _get_all_interface_names(cls):
 
1364
        """Get a sequence of all interfaces supported by an object"""
 
1365
        return (name for name in set(getattr(getattr(x, attr),
 
1366
                                             "_dbus_interface", None)
 
1367
                                     for x in (inspect.getmro(cls))
 
1368
                                     for attr in dir(x))
 
1369
                if name is not None)
 
1370
 
 
1371
    @dbus.service.method(dbus.PROPERTIES_IFACE,
 
1372
                         in_signature="ss",
653
1373
                         out_signature="v")
654
1374
    def Get(self, interface_name, property_name):
655
1375
        """Standard D-Bus property Get() method, see D-Bus standard.
661
1381
        if not hasattr(value, "variant_level"):
662
1382
            return value
663
1383
        return type(value)(value, variant_level=value.variant_level+1)
664
 
    
 
1384
 
665
1385
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
666
1386
    def Set(self, interface_name, property_name, value):
667
1387
        """Standard D-Bus property Set() method, see D-Bus standard.
673
1393
            # The byte_arrays option is not supported yet on
674
1394
            # signatures other than "ay".
675
1395
            if prop._dbus_signature != "ay":
676
 
                raise ValueError
677
 
            value = dbus.ByteArray(''.join(unichr(byte)
678
 
                                           for byte in value))
 
1396
                raise ValueError("Byte arrays not supported for non-"
 
1397
                                 "'ay' signature {!r}"
 
1398
                                 .format(prop._dbus_signature))
 
1399
            value = dbus.ByteArray(b''.join(chr(byte)
 
1400
                                            for byte in value))
679
1401
        prop(value)
680
 
    
681
 
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
 
1402
 
 
1403
    @dbus.service.method(dbus.PROPERTIES_IFACE,
 
1404
                         in_signature="s",
682
1405
                         out_signature="a{sv}")
683
1406
    def GetAll(self, interface_name):
684
1407
        """Standard D-Bus property GetAll() method, see D-Bus
685
1408
        standard.
686
 
        
 
1409
 
687
1410
        Note: Will not include properties with access="write".
688
1411
        """
689
 
        all = {}
690
 
        for name, prop in self._get_all_dbus_properties():
 
1412
        properties = {}
 
1413
        for name, prop in self._get_all_dbus_things("property"):
691
1414
            if (interface_name
692
1415
                and interface_name != prop._dbus_interface):
693
1416
                # Interface non-empty but did not match
697
1420
                continue
698
1421
            value = prop()
699
1422
            if not hasattr(value, "variant_level"):
700
 
                all[name] = value
 
1423
                properties[name] = value
701
1424
                continue
702
 
            all[name] = type(value)(value, variant_level=
703
 
                                    value.variant_level+1)
704
 
        return dbus.Dictionary(all, signature="sv")
705
 
    
 
1425
            properties[name] = type(value)(
 
1426
                value, variant_level=value.variant_level + 1)
 
1427
        return dbus.Dictionary(properties, signature="sv")
 
1428
 
 
1429
    @dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
 
1430
    def PropertiesChanged(self, interface_name, changed_properties,
 
1431
                          invalidated_properties):
 
1432
        """Standard D-Bus PropertiesChanged() signal, see D-Bus
 
1433
        standard.
 
1434
        """
 
1435
        pass
 
1436
 
706
1437
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
707
1438
                         out_signature="s",
708
1439
                         path_keyword='object_path',
709
1440
                         connection_keyword='connection')
710
1441
    def Introspect(self, object_path, connection):
711
 
        """Standard D-Bus method, overloaded to insert property tags.
 
1442
        """Overloading of standard D-Bus method.
 
1443
 
 
1444
        Inserts property tags and interface annotation tags.
712
1445
        """
713
 
        xmlstring = dbus.service.Object.Introspect(self, object_path,
714
 
                                                   connection)
 
1446
        xmlstring = DBusObjectWithAnnotations.Introspect(self,
 
1447
                                                         object_path,
 
1448
                                                         connection)
715
1449
        try:
716
1450
            document = xml.dom.minidom.parseString(xmlstring)
 
1451
 
717
1452
            def make_tag(document, name, prop):
718
1453
                e = document.createElement("property")
719
1454
                e.setAttribute("name", name)
720
1455
                e.setAttribute("type", prop._dbus_signature)
721
1456
                e.setAttribute("access", prop._dbus_access)
722
1457
                return e
 
1458
 
723
1459
            for if_tag in document.getElementsByTagName("interface"):
 
1460
                # Add property tags
724
1461
                for tag in (make_tag(document, name, prop)
725
1462
                            for name, prop
726
 
                            in self._get_all_dbus_properties()
 
1463
                            in self._get_all_dbus_things("property")
727
1464
                            if prop._dbus_interface
728
1465
                            == if_tag.getAttribute("name")):
729
1466
                    if_tag.appendChild(tag)
 
1467
                # Add annotation tags for properties
 
1468
                for tag in if_tag.getElementsByTagName("property"):
 
1469
                    annots = dict()
 
1470
                    for name, prop in self._get_all_dbus_things(
 
1471
                            "property"):
 
1472
                        if (name == tag.getAttribute("name")
 
1473
                            and prop._dbus_interface
 
1474
                            == if_tag.getAttribute("name")):
 
1475
                            annots.update(getattr(
 
1476
                                prop, "_dbus_annotations", {}))
 
1477
                    for name, value in annots.items():
 
1478
                        ann_tag = document.createElement(
 
1479
                            "annotation")
 
1480
                        ann_tag.setAttribute("name", name)
 
1481
                        ann_tag.setAttribute("value", value)
 
1482
                        tag.appendChild(ann_tag)
730
1483
                # Add the names to the return values for the
731
1484
                # "org.freedesktop.DBus.Properties" methods
732
1485
                if (if_tag.getAttribute("name")
747
1500
        except (AttributeError, xml.dom.DOMException,
748
1501
                xml.parsers.expat.ExpatError) as error:
749
1502
            logger.error("Failed to override Introspection method",
750
 
                         error)
751
 
        return xmlstring
752
 
 
753
 
 
754
 
def datetime_to_dbus (dt, variant_level=0):
 
1503
                         exc_info=error)
 
1504
        return xmlstring
 
1505
 
 
1506
 
 
1507
try:
 
1508
    dbus.OBJECT_MANAGER_IFACE
 
1509
except AttributeError:
 
1510
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
 
1511
 
 
1512
 
 
1513
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
 
1514
    """A D-Bus object with an ObjectManager.
 
1515
 
 
1516
    Classes inheriting from this exposes the standard
 
1517
    GetManagedObjects call and the InterfacesAdded and
 
1518
    InterfacesRemoved signals on the standard
 
1519
    "org.freedesktop.DBus.ObjectManager" interface.
 
1520
 
 
1521
    Note: No signals are sent automatically; they must be sent
 
1522
    manually.
 
1523
    """
 
1524
    @dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
 
1525
                         out_signature="a{oa{sa{sv}}}")
 
1526
    def GetManagedObjects(self):
 
1527
        """This function must be overridden"""
 
1528
        raise NotImplementedError()
 
1529
 
 
1530
    @dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
 
1531
                         signature="oa{sa{sv}}")
 
1532
    def InterfacesAdded(self, object_path, interfaces_and_properties):
 
1533
        pass
 
1534
 
 
1535
    @dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
 
1536
    def InterfacesRemoved(self, object_path, interfaces):
 
1537
        pass
 
1538
 
 
1539
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
 
1540
                         out_signature="s",
 
1541
                         path_keyword='object_path',
 
1542
                         connection_keyword='connection')
 
1543
    def Introspect(self, object_path, connection):
 
1544
        """Overloading of standard D-Bus method.
 
1545
 
 
1546
        Override return argument name of GetManagedObjects to be
 
1547
        "objpath_interfaces_and_properties"
 
1548
        """
 
1549
        xmlstring = DBusObjectWithAnnotations.Introspect(self,
 
1550
                                                         object_path,
 
1551
                                                         connection)
 
1552
        try:
 
1553
            document = xml.dom.minidom.parseString(xmlstring)
 
1554
 
 
1555
            for if_tag in document.getElementsByTagName("interface"):
 
1556
                # Fix argument name for the GetManagedObjects method
 
1557
                if (if_tag.getAttribute("name")
 
1558
                    == dbus.OBJECT_MANAGER_IFACE):
 
1559
                    for cn in if_tag.getElementsByTagName("method"):
 
1560
                        if (cn.getAttribute("name")
 
1561
                            == "GetManagedObjects"):
 
1562
                            for arg in cn.getElementsByTagName("arg"):
 
1563
                                if (arg.getAttribute("direction")
 
1564
                                    == "out"):
 
1565
                                    arg.setAttribute(
 
1566
                                        "name",
 
1567
                                        "objpath_interfaces"
 
1568
                                        "_and_properties")
 
1569
            xmlstring = document.toxml("utf-8")
 
1570
            document.unlink()
 
1571
        except (AttributeError, xml.dom.DOMException,
 
1572
                xml.parsers.expat.ExpatError) as error:
 
1573
            logger.error("Failed to override Introspection method",
 
1574
                         exc_info=error)
 
1575
        return xmlstring
 
1576
 
 
1577
 
 
1578
def datetime_to_dbus(dt, variant_level=0):
755
1579
    """Convert a UTC datetime.datetime() to a D-Bus type."""
756
1580
    if dt is None:
757
 
        return dbus.String("", variant_level = variant_level)
758
 
    return dbus.String(dt.isoformat(),
759
 
                       variant_level=variant_level)
760
 
 
761
 
 
 
1581
        return dbus.String("", variant_level=variant_level)
 
1582
    return dbus.String(dt.isoformat(), variant_level=variant_level)
 
1583
 
 
1584
 
 
1585
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
 
1586
    """A class decorator; applied to a subclass of
 
1587
    dbus.service.Object, it will add alternate D-Bus attributes with
 
1588
    interface names according to the "alt_interface_names" mapping.
 
1589
    Usage:
 
1590
 
 
1591
    @alternate_dbus_interfaces({"org.example.Interface":
 
1592
                                    "net.example.AlternateInterface"})
 
1593
    class SampleDBusObject(dbus.service.Object):
 
1594
        @dbus.service.method("org.example.Interface")
 
1595
        def SampleDBusMethod():
 
1596
            pass
 
1597
 
 
1598
    The above "SampleDBusMethod" on "SampleDBusObject" will be
 
1599
    reachable via two interfaces: "org.example.Interface" and
 
1600
    "net.example.AlternateInterface", the latter of which will have
 
1601
    its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
 
1602
    "true", unless "deprecate" is passed with a False value.
 
1603
 
 
1604
    This works for methods and signals, and also for D-Bus properties
 
1605
    (from DBusObjectWithProperties) and interfaces (from the
 
1606
    dbus_interface_annotations decorator).
 
1607
    """
 
1608
 
 
1609
    def wrapper(cls):
 
1610
        for orig_interface_name, alt_interface_name in (
 
1611
                alt_interface_names.items()):
 
1612
            attr = {}
 
1613
            interface_names = set()
 
1614
            # Go though all attributes of the class
 
1615
            for attrname, attribute in inspect.getmembers(cls):
 
1616
                # Ignore non-D-Bus attributes, and D-Bus attributes
 
1617
                # with the wrong interface name
 
1618
                if (not hasattr(attribute, "_dbus_interface")
 
1619
                    or not attribute._dbus_interface.startswith(
 
1620
                        orig_interface_name)):
 
1621
                    continue
 
1622
                # Create an alternate D-Bus interface name based on
 
1623
                # the current name
 
1624
                alt_interface = attribute._dbus_interface.replace(
 
1625
                    orig_interface_name, alt_interface_name)
 
1626
                interface_names.add(alt_interface)
 
1627
                # Is this a D-Bus signal?
 
1628
                if getattr(attribute, "_dbus_is_signal", False):
 
1629
                    # Extract the original non-method undecorated
 
1630
                    # function by black magic
 
1631
                    if sys.version_info.major == 2:
 
1632
                        nonmethod_func = (dict(
 
1633
                            zip(attribute.func_code.co_freevars,
 
1634
                                attribute.__closure__))
 
1635
                                          ["func"].cell_contents)
 
1636
                    else:
 
1637
                        nonmethod_func = (dict(
 
1638
                            zip(attribute.__code__.co_freevars,
 
1639
                                attribute.__closure__))
 
1640
                                          ["func"].cell_contents)
 
1641
                    # Create a new, but exactly alike, function
 
1642
                    # object, and decorate it to be a new D-Bus signal
 
1643
                    # with the alternate D-Bus interface name
 
1644
                    new_function = copy_function(nonmethod_func)
 
1645
                    new_function = (dbus.service.signal(
 
1646
                        alt_interface,
 
1647
                        attribute._dbus_signature)(new_function))
 
1648
                    # Copy annotations, if any
 
1649
                    try:
 
1650
                        new_function._dbus_annotations = dict(
 
1651
                            attribute._dbus_annotations)
 
1652
                    except AttributeError:
 
1653
                        pass
 
1654
 
 
1655
                    # Define a creator of a function to call both the
 
1656
                    # original and alternate functions, so both the
 
1657
                    # original and alternate signals gets sent when
 
1658
                    # the function is called
 
1659
                    def fixscope(func1, func2):
 
1660
                        """This function is a scope container to pass
 
1661
                        func1 and func2 to the "call_both" function
 
1662
                        outside of its arguments"""
 
1663
 
 
1664
                        @functools.wraps(func2)
 
1665
                        def call_both(*args, **kwargs):
 
1666
                            """This function will emit two D-Bus
 
1667
                            signals by calling func1 and func2"""
 
1668
                            func1(*args, **kwargs)
 
1669
                            func2(*args, **kwargs)
 
1670
                        # Make wrapper function look like a D-Bus
 
1671
                        # signal
 
1672
                        for name, attr in inspect.getmembers(func2):
 
1673
                            if name.startswith("_dbus_"):
 
1674
                                setattr(call_both, name, attr)
 
1675
 
 
1676
                        return call_both
 
1677
                    # Create the "call_both" function and add it to
 
1678
                    # the class
 
1679
                    attr[attrname] = fixscope(attribute, new_function)
 
1680
                # Is this a D-Bus method?
 
1681
                elif getattr(attribute, "_dbus_is_method", False):
 
1682
                    # Create a new, but exactly alike, function
 
1683
                    # object.  Decorate it to be a new D-Bus method
 
1684
                    # with the alternate D-Bus interface name.  Add it
 
1685
                    # to the class.
 
1686
                    attr[attrname] = (
 
1687
                        dbus.service.method(
 
1688
                            alt_interface,
 
1689
                            attribute._dbus_in_signature,
 
1690
                            attribute._dbus_out_signature)
 
1691
                        (copy_function(attribute)))
 
1692
                    # Copy annotations, if any
 
1693
                    try:
 
1694
                        attr[attrname]._dbus_annotations = dict(
 
1695
                            attribute._dbus_annotations)
 
1696
                    except AttributeError:
 
1697
                        pass
 
1698
                # Is this a D-Bus property?
 
1699
                elif getattr(attribute, "_dbus_is_property", False):
 
1700
                    # Create a new, but exactly alike, function
 
1701
                    # object, and decorate it to be a new D-Bus
 
1702
                    # property with the alternate D-Bus interface
 
1703
                    # name.  Add it to the class.
 
1704
                    attr[attrname] = (dbus_service_property(
 
1705
                        alt_interface, attribute._dbus_signature,
 
1706
                        attribute._dbus_access,
 
1707
                        attribute._dbus_get_args_options
 
1708
                        ["byte_arrays"])
 
1709
                                      (copy_function(attribute)))
 
1710
                    # Copy annotations, if any
 
1711
                    try:
 
1712
                        attr[attrname]._dbus_annotations = dict(
 
1713
                            attribute._dbus_annotations)
 
1714
                    except AttributeError:
 
1715
                        pass
 
1716
                # Is this a D-Bus interface?
 
1717
                elif getattr(attribute, "_dbus_is_interface", False):
 
1718
                    # Create a new, but exactly alike, function
 
1719
                    # object.  Decorate it to be a new D-Bus interface
 
1720
                    # with the alternate D-Bus interface name.  Add it
 
1721
                    # to the class.
 
1722
                    attr[attrname] = (
 
1723
                        dbus_interface_annotations(alt_interface)
 
1724
                        (copy_function(attribute)))
 
1725
            if deprecate:
 
1726
                # Deprecate all alternate interfaces
 
1727
                iname = "_AlternateDBusNames_interface_annotation{}"
 
1728
                for interface_name in interface_names:
 
1729
 
 
1730
                    @dbus_interface_annotations(interface_name)
 
1731
                    def func(self):
 
1732
                        return {"org.freedesktop.DBus.Deprecated":
 
1733
                                "true"}
 
1734
                    # Find an unused name
 
1735
                    for aname in (iname.format(i)
 
1736
                                  for i in itertools.count()):
 
1737
                        if aname not in attr:
 
1738
                            attr[aname] = func
 
1739
                            break
 
1740
            if interface_names:
 
1741
                # Replace the class with a new subclass of it with
 
1742
                # methods, signals, etc. as created above.
 
1743
                if sys.version_info.major == 2:
 
1744
                    cls = type(b"{}Alternate".format(cls.__name__),
 
1745
                               (cls, ), attr)
 
1746
                else:
 
1747
                    cls = type("{}Alternate".format(cls.__name__),
 
1748
                               (cls, ), attr)
 
1749
        return cls
 
1750
 
 
1751
    return wrapper
 
1752
 
 
1753
 
 
1754
@alternate_dbus_interfaces({"se.recompile.Mandos":
 
1755
                            "se.bsnet.fukt.Mandos"})
762
1756
class ClientDBus(Client, DBusObjectWithProperties):
763
1757
    """A Client class using D-Bus
764
 
    
 
1758
 
765
1759
    Attributes:
766
1760
    dbus_object_path: dbus.ObjectPath
767
1761
    bus: dbus.SystemBus()
768
1762
    """
769
 
    
 
1763
 
770
1764
    runtime_expansions = (Client.runtime_expansions
771
 
                          + ("dbus_object_path",))
772
 
    
 
1765
                          + ("dbus_object_path", ))
 
1766
 
 
1767
    _interface = "se.recompile.Mandos.Client"
 
1768
 
773
1769
    # dbus.service.Object doesn't use super(), so we can't either.
774
 
    
775
 
    def __init__(self, bus = None, *args, **kwargs):
776
 
        self._approvals_pending = 0
 
1770
 
 
1771
    def __init__(self, bus=None, *args, **kwargs):
777
1772
        self.bus = bus
778
1773
        Client.__init__(self, *args, **kwargs)
779
1774
        # Only now, when this client is initialized, can it show up on
780
1775
        # the D-Bus
781
 
        client_object_name = unicode(self.name).translate(
 
1776
        client_object_name = str(self.name).translate(
782
1777
            {ord("."): ord("_"),
783
1778
             ord("-"): ord("_")})
784
 
        self.dbus_object_path = (dbus.ObjectPath
785
 
                                 ("/clients/" + client_object_name))
 
1779
        self.dbus_object_path = dbus.ObjectPath(
 
1780
            "/clients/" + client_object_name)
786
1781
        DBusObjectWithProperties.__init__(self, self.bus,
787
1782
                                          self.dbus_object_path)
788
 
        
789
 
    def notifychangeproperty(transform_func,
790
 
                             dbus_name, type_func=lambda x: x,
791
 
                             variant_level=1):
792
 
        """ Modify a variable so that its a property that announce its
793
 
        changes to DBus.
794
 
        transform_fun: Function that takes a value and transform it to
795
 
                       DBus type.
796
 
        dbus_name: DBus name of the variable
 
1783
 
 
1784
    def notifychangeproperty(transform_func, dbus_name,
 
1785
                             type_func=lambda x: x,
 
1786
                             variant_level=1,
 
1787
                             invalidate_only=False,
 
1788
                             _interface=_interface):
 
1789
        """ Modify a variable so that it's a property which announces
 
1790
        its changes to DBus.
 
1791
 
 
1792
        transform_fun: Function that takes a value and a variant_level
 
1793
                       and transforms it to a D-Bus type.
 
1794
        dbus_name: D-Bus name of the variable
797
1795
        type_func: Function that transform the value before sending it
798
 
                   to DBus
799
 
        variant_level: DBus variant level. default: 1
 
1796
                   to the D-Bus.  Default: no transform
 
1797
        variant_level: D-Bus variant level.  Default: 1
800
1798
        """
801
 
        real_value = [None,]
 
1799
        attrname = "_{}".format(dbus_name)
 
1800
 
802
1801
        def setter(self, value):
803
 
            old_value = real_value[0]
804
 
            real_value[0] = value
805
1802
            if hasattr(self, "dbus_object_path"):
806
 
                if type_func(old_value) != type_func(real_value[0]):
807
 
                    dbus_value = transform_func(type_func(real_value[0]),
808
 
                                                variant_level)
809
 
                    self.PropertyChanged(dbus.String(dbus_name),
810
 
                                         dbus_value)
811
 
        
812
 
        return property(lambda self: real_value[0], setter)
813
 
    
814
 
    
 
1803
                if (not hasattr(self, attrname) or
 
1804
                    type_func(getattr(self, attrname, None))
 
1805
                    != type_func(value)):
 
1806
                    if invalidate_only:
 
1807
                        self.PropertiesChanged(
 
1808
                            _interface, dbus.Dictionary(),
 
1809
                            dbus.Array((dbus_name, )))
 
1810
                    else:
 
1811
                        dbus_value = transform_func(
 
1812
                            type_func(value),
 
1813
                            variant_level=variant_level)
 
1814
                        self.PropertyChanged(dbus.String(dbus_name),
 
1815
                                             dbus_value)
 
1816
                        self.PropertiesChanged(
 
1817
                            _interface,
 
1818
                            dbus.Dictionary({dbus.String(dbus_name):
 
1819
                                             dbus_value}),
 
1820
                            dbus.Array())
 
1821
            setattr(self, attrname, value)
 
1822
 
 
1823
        return property(lambda self: getattr(self, attrname), setter)
 
1824
 
815
1825
    expires = notifychangeproperty(datetime_to_dbus, "Expires")
816
1826
    approvals_pending = notifychangeproperty(dbus.Boolean,
817
1827
                                             "ApprovalPending",
818
 
                                             type_func = bool)
 
1828
                                             type_func=bool)
819
1829
    enabled = notifychangeproperty(dbus.Boolean, "Enabled")
820
1830
    last_enabled = notifychangeproperty(datetime_to_dbus,
821
1831
                                        "LastEnabled")
822
 
    checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
823
 
                                   type_func = lambda checker: checker is not None)
 
1832
    checker = notifychangeproperty(
 
1833
        dbus.Boolean, "CheckerRunning",
 
1834
        type_func=lambda checker: checker is not None)
824
1835
    last_checked_ok = notifychangeproperty(datetime_to_dbus,
825
1836
                                           "LastCheckedOK")
826
 
    last_approval_request = notifychangeproperty(datetime_to_dbus,
827
 
                                                 "LastApprovalRequest")
 
1837
    last_checker_status = notifychangeproperty(dbus.Int16,
 
1838
                                               "LastCheckerStatus")
 
1839
    last_approval_request = notifychangeproperty(
 
1840
        datetime_to_dbus, "LastApprovalRequest")
828
1841
    approved_by_default = notifychangeproperty(dbus.Boolean,
829
1842
                                               "ApprovedByDefault")
830
 
    approval_delay = notifychangeproperty(dbus.UInt16, "ApprovalDelay",
831
 
                                          type_func = _timedelta_to_milliseconds)
832
 
    approval_duration = notifychangeproperty(dbus.UInt16, "ApprovalDuration",
833
 
                                             type_func = _timedelta_to_milliseconds)
 
1843
    approval_delay = notifychangeproperty(
 
1844
        dbus.UInt64, "ApprovalDelay",
 
1845
        type_func=lambda td: td.total_seconds() * 1000)
 
1846
    approval_duration = notifychangeproperty(
 
1847
        dbus.UInt64, "ApprovalDuration",
 
1848
        type_func=lambda td: td.total_seconds() * 1000)
834
1849
    host = notifychangeproperty(dbus.String, "Host")
835
 
    timeout = notifychangeproperty(dbus.UInt16, "Timeout",
836
 
                                   type_func = _timedelta_to_milliseconds)
837
 
    extended_timeout = notifychangeproperty(dbus.UInt16, "ExtendedTimeout",
838
 
                                            type_func = _timedelta_to_milliseconds)
839
 
    interval = notifychangeproperty(dbus.UInt16, "Interval",
840
 
                                    type_func = _timedelta_to_milliseconds)
 
1850
    timeout = notifychangeproperty(
 
1851
        dbus.UInt64, "Timeout",
 
1852
        type_func=lambda td: td.total_seconds() * 1000)
 
1853
    extended_timeout = notifychangeproperty(
 
1854
        dbus.UInt64, "ExtendedTimeout",
 
1855
        type_func=lambda td: td.total_seconds() * 1000)
 
1856
    interval = notifychangeproperty(
 
1857
        dbus.UInt64, "Interval",
 
1858
        type_func=lambda td: td.total_seconds() * 1000)
841
1859
    checker_command = notifychangeproperty(dbus.String, "Checker")
842
 
    
 
1860
    secret = notifychangeproperty(dbus.ByteArray, "Secret",
 
1861
                                  invalidate_only=True)
 
1862
 
843
1863
    del notifychangeproperty
844
 
    
 
1864
 
845
1865
    def __del__(self, *args, **kwargs):
846
1866
        try:
847
1867
            self.remove_from_connection()
850
1870
        if hasattr(DBusObjectWithProperties, "__del__"):
851
1871
            DBusObjectWithProperties.__del__(self, *args, **kwargs)
852
1872
        Client.__del__(self, *args, **kwargs)
853
 
    
854
 
    def checker_callback(self, pid, condition, command,
855
 
                         *args, **kwargs):
856
 
        self.checker_callback_tag = None
857
 
        self.checker = None
858
 
        if os.WIFEXITED(condition):
859
 
            exitstatus = os.WEXITSTATUS(condition)
 
1873
 
 
1874
    def checker_callback(self, source, condition,
 
1875
                         connection, command, *args, **kwargs):
 
1876
        ret = Client.checker_callback(self, source, condition,
 
1877
                                      connection, command, *args,
 
1878
                                      **kwargs)
 
1879
        exitstatus = self.last_checker_status
 
1880
        if exitstatus >= 0:
860
1881
            # Emit D-Bus signal
861
1882
            self.CheckerCompleted(dbus.Int16(exitstatus),
862
 
                                  dbus.Int64(condition),
 
1883
                                  # This is specific to GNU libC
 
1884
                                  dbus.Int64(exitstatus << 8),
863
1885
                                  dbus.String(command))
864
1886
        else:
865
1887
            # Emit D-Bus signal
866
1888
            self.CheckerCompleted(dbus.Int16(-1),
867
 
                                  dbus.Int64(condition),
 
1889
                                  dbus.Int64(
 
1890
                                      # This is specific to GNU libC
 
1891
                                      (exitstatus << 8)
 
1892
                                      | self.last_checker_signal),
868
1893
                                  dbus.String(command))
869
 
        
870
 
        return Client.checker_callback(self, pid, condition, command,
871
 
                                       *args, **kwargs)
872
 
    
 
1894
        return ret
 
1895
 
873
1896
    def start_checker(self, *args, **kwargs):
874
 
        old_checker = self.checker
875
 
        if self.checker is not None:
876
 
            old_checker_pid = self.checker.pid
877
 
        else:
878
 
            old_checker_pid = None
 
1897
        old_checker_pid = getattr(self.checker, "pid", None)
879
1898
        r = Client.start_checker(self, *args, **kwargs)
880
1899
        # Only if new checker process was started
881
1900
        if (self.checker is not None
883
1902
            # Emit D-Bus signal
884
1903
            self.CheckerStarted(self.current_checker_command)
885
1904
        return r
886
 
    
 
1905
 
887
1906
    def _reset_approved(self):
888
 
        self._approved = None
 
1907
        self.approved = None
889
1908
        return False
890
 
    
 
1909
 
891
1910
    def approve(self, value=True):
 
1911
        self.approved = value
 
1912
        GLib.timeout_add(int(self.approval_duration.total_seconds()
 
1913
                             * 1000), self._reset_approved)
892
1914
        self.send_changedstate()
893
 
        self._approved = value
894
 
        gobject.timeout_add(_timedelta_to_milliseconds
895
 
                            (self.approval_duration),
896
 
                            self._reset_approved)
897
 
    
898
 
    
899
 
    ## D-Bus methods, signals & properties
900
 
    _interface = "se.bsnet.fukt.Mandos.Client"
901
 
    
902
 
    ## Signals
903
 
    
 
1915
 
 
1916
    #  D-Bus methods, signals & properties
 
1917
 
 
1918
    #  Interfaces
 
1919
 
 
1920
    #  Signals
 
1921
 
904
1922
    # CheckerCompleted - signal
905
1923
    @dbus.service.signal(_interface, signature="nxs")
906
1924
    def CheckerCompleted(self, exitcode, waitstatus, command):
907
1925
        "D-Bus signal"
908
1926
        pass
909
 
    
 
1927
 
910
1928
    # CheckerStarted - signal
911
1929
    @dbus.service.signal(_interface, signature="s")
912
1930
    def CheckerStarted(self, command):
913
1931
        "D-Bus signal"
914
1932
        pass
915
 
    
 
1933
 
916
1934
    # PropertyChanged - signal
 
1935
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
917
1936
    @dbus.service.signal(_interface, signature="sv")
918
1937
    def PropertyChanged(self, property, value):
919
1938
        "D-Bus signal"
920
1939
        pass
921
 
    
 
1940
 
922
1941
    # GotSecret - signal
923
1942
    @dbus.service.signal(_interface)
924
1943
    def GotSecret(self):
927
1946
        server to mandos-client
928
1947
        """
929
1948
        pass
930
 
    
 
1949
 
931
1950
    # Rejected - signal
932
1951
    @dbus.service.signal(_interface, signature="s")
933
1952
    def Rejected(self, reason):
934
1953
        "D-Bus signal"
935
1954
        pass
936
 
    
 
1955
 
937
1956
    # NeedApproval - signal
938
1957
    @dbus.service.signal(_interface, signature="tb")
939
1958
    def NeedApproval(self, timeout, default):
940
1959
        "D-Bus signal"
941
1960
        return self.need_approval()
942
 
    
943
 
    ## Methods
944
 
    
 
1961
 
 
1962
    #  Methods
 
1963
 
945
1964
    # Approve - method
946
1965
    @dbus.service.method(_interface, in_signature="b")
947
1966
    def Approve(self, value):
948
1967
        self.approve(value)
949
 
    
 
1968
 
950
1969
    # CheckedOK - method
951
1970
    @dbus.service.method(_interface)
952
1971
    def CheckedOK(self):
953
1972
        self.checked_ok()
954
 
    
 
1973
 
955
1974
    # Enable - method
 
1975
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
956
1976
    @dbus.service.method(_interface)
957
1977
    def Enable(self):
958
1978
        "D-Bus method"
959
1979
        self.enable()
960
 
    
 
1980
 
961
1981
    # StartChecker - method
 
1982
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
962
1983
    @dbus.service.method(_interface)
963
1984
    def StartChecker(self):
964
1985
        "D-Bus method"
965
1986
        self.start_checker()
966
 
    
 
1987
 
967
1988
    # Disable - method
 
1989
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
968
1990
    @dbus.service.method(_interface)
969
1991
    def Disable(self):
970
1992
        "D-Bus method"
971
1993
        self.disable()
972
 
    
 
1994
 
973
1995
    # StopChecker - method
 
1996
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
974
1997
    @dbus.service.method(_interface)
975
1998
    def StopChecker(self):
976
1999
        self.stop_checker()
977
 
    
978
 
    ## Properties
979
 
    
 
2000
 
 
2001
    #  Properties
 
2002
 
980
2003
    # ApprovalPending - property
981
2004
    @dbus_service_property(_interface, signature="b", access="read")
982
2005
    def ApprovalPending_dbus_property(self):
983
2006
        return dbus.Boolean(bool(self.approvals_pending))
984
 
    
 
2007
 
985
2008
    # ApprovedByDefault - property
986
 
    @dbus_service_property(_interface, signature="b",
 
2009
    @dbus_service_property(_interface,
 
2010
                           signature="b",
987
2011
                           access="readwrite")
988
2012
    def ApprovedByDefault_dbus_property(self, value=None):
989
2013
        if value is None:       # get
990
2014
            return dbus.Boolean(self.approved_by_default)
991
2015
        self.approved_by_default = bool(value)
992
 
    
 
2016
 
993
2017
    # ApprovalDelay - property
994
 
    @dbus_service_property(_interface, signature="t",
 
2018
    @dbus_service_property(_interface,
 
2019
                           signature="t",
995
2020
                           access="readwrite")
996
2021
    def ApprovalDelay_dbus_property(self, value=None):
997
2022
        if value is None:       # get
998
 
            return dbus.UInt64(self.approval_delay_milliseconds())
 
2023
            return dbus.UInt64(self.approval_delay.total_seconds()
 
2024
                               * 1000)
999
2025
        self.approval_delay = datetime.timedelta(0, 0, 0, value)
1000
 
    
 
2026
 
1001
2027
    # ApprovalDuration - property
1002
 
    @dbus_service_property(_interface, signature="t",
 
2028
    @dbus_service_property(_interface,
 
2029
                           signature="t",
1003
2030
                           access="readwrite")
1004
2031
    def ApprovalDuration_dbus_property(self, value=None):
1005
2032
        if value is None:       # get
1006
 
            return dbus.UInt64(_timedelta_to_milliseconds(
1007
 
                    self.approval_duration))
 
2033
            return dbus.UInt64(self.approval_duration.total_seconds()
 
2034
                               * 1000)
1008
2035
        self.approval_duration = datetime.timedelta(0, 0, 0, value)
1009
 
    
 
2036
 
1010
2037
    # Name - property
 
2038
    @dbus_annotations(
 
2039
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1011
2040
    @dbus_service_property(_interface, signature="s", access="read")
1012
2041
    def Name_dbus_property(self):
1013
2042
        return dbus.String(self.name)
1014
 
    
 
2043
 
 
2044
    # KeyID - property
 
2045
    @dbus_annotations(
 
2046
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
 
2047
    @dbus_service_property(_interface, signature="s", access="read")
 
2048
    def KeyID_dbus_property(self):
 
2049
        return dbus.String(self.key_id)
 
2050
 
1015
2051
    # Fingerprint - property
 
2052
    @dbus_annotations(
 
2053
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1016
2054
    @dbus_service_property(_interface, signature="s", access="read")
1017
2055
    def Fingerprint_dbus_property(self):
1018
2056
        return dbus.String(self.fingerprint)
1019
 
    
 
2057
 
1020
2058
    # Host - property
1021
 
    @dbus_service_property(_interface, signature="s",
 
2059
    @dbus_service_property(_interface,
 
2060
                           signature="s",
1022
2061
                           access="readwrite")
1023
2062
    def Host_dbus_property(self, value=None):
1024
2063
        if value is None:       # get
1025
2064
            return dbus.String(self.host)
1026
 
        self.host = value
1027
 
    
 
2065
        self.host = str(value)
 
2066
 
1028
2067
    # Created - property
 
2068
    @dbus_annotations(
 
2069
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1029
2070
    @dbus_service_property(_interface, signature="s", access="read")
1030
2071
    def Created_dbus_property(self):
1031
 
        return dbus.String(datetime_to_dbus(self.created))
1032
 
    
 
2072
        return datetime_to_dbus(self.created)
 
2073
 
1033
2074
    # LastEnabled - property
1034
2075
    @dbus_service_property(_interface, signature="s", access="read")
1035
2076
    def LastEnabled_dbus_property(self):
1036
2077
        return datetime_to_dbus(self.last_enabled)
1037
 
    
 
2078
 
1038
2079
    # Enabled - property
1039
 
    @dbus_service_property(_interface, signature="b",
 
2080
    @dbus_service_property(_interface,
 
2081
                           signature="b",
1040
2082
                           access="readwrite")
1041
2083
    def Enabled_dbus_property(self, value=None):
1042
2084
        if value is None:       # get
1045
2087
            self.enable()
1046
2088
        else:
1047
2089
            self.disable()
1048
 
    
 
2090
 
1049
2091
    # LastCheckedOK - property
1050
 
    @dbus_service_property(_interface, signature="s",
 
2092
    @dbus_service_property(_interface,
 
2093
                           signature="s",
1051
2094
                           access="readwrite")
1052
2095
    def LastCheckedOK_dbus_property(self, value=None):
1053
2096
        if value is not None:
1054
2097
            self.checked_ok()
1055
2098
            return
1056
2099
        return datetime_to_dbus(self.last_checked_ok)
1057
 
    
 
2100
 
 
2101
    # LastCheckerStatus - property
 
2102
    @dbus_service_property(_interface, signature="n", access="read")
 
2103
    def LastCheckerStatus_dbus_property(self):
 
2104
        return dbus.Int16(self.last_checker_status)
 
2105
 
1058
2106
    # Expires - property
1059
2107
    @dbus_service_property(_interface, signature="s", access="read")
1060
2108
    def Expires_dbus_property(self):
1061
2109
        return datetime_to_dbus(self.expires)
1062
 
    
 
2110
 
1063
2111
    # LastApprovalRequest - property
1064
2112
    @dbus_service_property(_interface, signature="s", access="read")
1065
2113
    def LastApprovalRequest_dbus_property(self):
1066
2114
        return datetime_to_dbus(self.last_approval_request)
1067
 
    
 
2115
 
1068
2116
    # Timeout - property
1069
 
    @dbus_service_property(_interface, signature="t",
 
2117
    @dbus_service_property(_interface,
 
2118
                           signature="t",
1070
2119
                           access="readwrite")
1071
2120
    def Timeout_dbus_property(self, value=None):
1072
2121
        if value is None:       # get
1073
 
            return dbus.UInt64(self.timeout_milliseconds())
 
2122
            return dbus.UInt64(self.timeout.total_seconds() * 1000)
 
2123
        old_timeout = self.timeout
1074
2124
        self.timeout = datetime.timedelta(0, 0, 0, value)
1075
 
        if getattr(self, "disable_initiator_tag", None) is None:
1076
 
            return
1077
 
        # Reschedule timeout
1078
 
        gobject.source_remove(self.disable_initiator_tag)
1079
 
        self.disable_initiator_tag = None
1080
 
        self.expires = None
1081
 
        time_to_die = (self.
1082
 
                       _timedelta_to_milliseconds((self
1083
 
                                                   .last_checked_ok
1084
 
                                                   + self.timeout)
1085
 
                                                  - datetime.datetime
1086
 
                                                  .utcnow()))
1087
 
        if time_to_die <= 0:
1088
 
            # The timeout has passed
1089
 
            self.disable()
1090
 
        else:
1091
 
            self.expires = (datetime.datetime.utcnow()
1092
 
                            + datetime.timedelta(milliseconds = time_to_die))
1093
 
            self.disable_initiator_tag = (gobject.timeout_add
1094
 
                                          (time_to_die, self.disable))
1095
 
    
 
2125
        # Reschedule disabling
 
2126
        if self.enabled:
 
2127
            now = datetime.datetime.utcnow()
 
2128
            self.expires += self.timeout - old_timeout
 
2129
            if self.expires <= now:
 
2130
                # The timeout has passed
 
2131
                self.disable()
 
2132
            else:
 
2133
                if (getattr(self, "disable_initiator_tag", None)
 
2134
                    is None):
 
2135
                    return
 
2136
                GLib.source_remove(self.disable_initiator_tag)
 
2137
                self.disable_initiator_tag = GLib.timeout_add(
 
2138
                    int((self.expires - now).total_seconds() * 1000),
 
2139
                    self.disable)
 
2140
 
1096
2141
    # ExtendedTimeout - property
1097
 
    @dbus_service_property(_interface, signature="t",
 
2142
    @dbus_service_property(_interface,
 
2143
                           signature="t",
1098
2144
                           access="readwrite")
1099
2145
    def ExtendedTimeout_dbus_property(self, value=None):
1100
2146
        if value is None:       # get
1101
 
            return dbus.UInt64(self.extended_timeout_milliseconds())
 
2147
            return dbus.UInt64(self.extended_timeout.total_seconds()
 
2148
                               * 1000)
1102
2149
        self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1103
 
    
 
2150
 
1104
2151
    # Interval - property
1105
 
    @dbus_service_property(_interface, signature="t",
 
2152
    @dbus_service_property(_interface,
 
2153
                           signature="t",
1106
2154
                           access="readwrite")
1107
2155
    def Interval_dbus_property(self, value=None):
1108
2156
        if value is None:       # get
1109
 
            return dbus.UInt64(self.interval_milliseconds())
 
2157
            return dbus.UInt64(self.interval.total_seconds() * 1000)
1110
2158
        self.interval = datetime.timedelta(0, 0, 0, value)
1111
2159
        if getattr(self, "checker_initiator_tag", None) is None:
1112
2160
            return
1113
 
        # Reschedule checker run
1114
 
        gobject.source_remove(self.checker_initiator_tag)
1115
 
        self.checker_initiator_tag = (gobject.timeout_add
1116
 
                                      (value, self.start_checker))
1117
 
        self.start_checker()    # Start one now, too
1118
 
    
 
2161
        if self.enabled:
 
2162
            # Reschedule checker run
 
2163
            GLib.source_remove(self.checker_initiator_tag)
 
2164
            self.checker_initiator_tag = GLib.timeout_add(
 
2165
                value, self.start_checker)
 
2166
            self.start_checker()  # Start one now, too
 
2167
 
1119
2168
    # Checker - property
1120
 
    @dbus_service_property(_interface, signature="s",
 
2169
    @dbus_service_property(_interface,
 
2170
                           signature="s",
1121
2171
                           access="readwrite")
1122
2172
    def Checker_dbus_property(self, value=None):
1123
2173
        if value is None:       # get
1124
2174
            return dbus.String(self.checker_command)
1125
 
        self.checker_command = value
1126
 
    
 
2175
        self.checker_command = str(value)
 
2176
 
1127
2177
    # CheckerRunning - property
1128
 
    @dbus_service_property(_interface, signature="b",
 
2178
    @dbus_service_property(_interface,
 
2179
                           signature="b",
1129
2180
                           access="readwrite")
1130
2181
    def CheckerRunning_dbus_property(self, value=None):
1131
2182
        if value is None:       # get
1134
2185
            self.start_checker()
1135
2186
        else:
1136
2187
            self.stop_checker()
1137
 
    
 
2188
 
1138
2189
    # ObjectPath - property
 
2190
    @dbus_annotations(
 
2191
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
 
2192
         "org.freedesktop.DBus.Deprecated": "true"})
1139
2193
    @dbus_service_property(_interface, signature="o", access="read")
1140
2194
    def ObjectPath_dbus_property(self):
1141
 
        return self.dbus_object_path # is already a dbus.ObjectPath
1142
 
    
 
2195
        return self.dbus_object_path  # is already a dbus.ObjectPath
 
2196
 
1143
2197
    # Secret = property
1144
 
    @dbus_service_property(_interface, signature="ay",
1145
 
                           access="write", byte_arrays=True)
 
2198
    @dbus_annotations(
 
2199
        {"org.freedesktop.DBus.Property.EmitsChangedSignal":
 
2200
         "invalidates"})
 
2201
    @dbus_service_property(_interface,
 
2202
                           signature="ay",
 
2203
                           access="write",
 
2204
                           byte_arrays=True)
1146
2205
    def Secret_dbus_property(self, value):
1147
 
        self.secret = str(value)
1148
 
    
 
2206
        self.secret = bytes(value)
 
2207
 
1149
2208
    del _interface
1150
2209
 
1151
2210
 
1152
2211
class ProxyClient(object):
1153
 
    def __init__(self, child_pipe, fpr, address):
 
2212
    def __init__(self, child_pipe, key_id, fpr, address):
1154
2213
        self._pipe = child_pipe
1155
 
        self._pipe.send(('init', fpr, address))
 
2214
        self._pipe.send(('init', key_id, fpr, address))
1156
2215
        if not self._pipe.recv():
1157
 
            raise KeyError()
1158
 
    
 
2216
            raise KeyError(key_id or fpr)
 
2217
 
1159
2218
    def __getattribute__(self, name):
1160
 
        if(name == '_pipe'):
 
2219
        if name == '_pipe':
1161
2220
            return super(ProxyClient, self).__getattribute__(name)
1162
2221
        self._pipe.send(('getattr', name))
1163
2222
        data = self._pipe.recv()
1164
2223
        if data[0] == 'data':
1165
2224
            return data[1]
1166
2225
        if data[0] == 'function':
 
2226
 
1167
2227
            def func(*args, **kwargs):
1168
2228
                self._pipe.send(('funcall', name, args, kwargs))
1169
2229
                return self._pipe.recv()[1]
 
2230
 
1170
2231
            return func
1171
 
    
 
2232
 
1172
2233
    def __setattr__(self, name, value):
1173
 
        if(name == '_pipe'):
 
2234
        if name == '_pipe':
1174
2235
            return super(ProxyClient, self).__setattr__(name, value)
1175
2236
        self._pipe.send(('setattr', name, value))
1176
2237
 
1177
2238
 
1178
2239
class ClientHandler(socketserver.BaseRequestHandler, object):
1179
2240
    """A class to handle client connections.
1180
 
    
 
2241
 
1181
2242
    Instantiated once for each connection to handle it.
1182
2243
    Note: This will run in its own forked process."""
1183
 
    
 
2244
 
1184
2245
    def handle(self):
1185
2246
        with contextlib.closing(self.server.child_pipe) as child_pipe:
1186
2247
            logger.info("TCP connection from: %s",
1187
 
                        unicode(self.client_address))
 
2248
                        str(self.client_address))
1188
2249
            logger.debug("Pipe FD: %d",
1189
2250
                         self.server.child_pipe.fileno())
1190
 
            
1191
 
            session = (gnutls.connection
1192
 
                       .ClientSession(self.request,
1193
 
                                      gnutls.connection
1194
 
                                      .X509Credentials()))
1195
 
            
1196
 
            # Note: gnutls.connection.X509Credentials is really a
1197
 
            # generic GnuTLS certificate credentials object so long as
1198
 
            # no X.509 keys are added to it.  Therefore, we can use it
1199
 
            # here despite using OpenPGP certificates.
1200
 
            
1201
 
            #priority = ':'.join(("NONE", "+VERS-TLS1.1",
1202
 
            #                      "+AES-256-CBC", "+SHA1",
1203
 
            #                      "+COMP-NULL", "+CTYPE-OPENPGP",
1204
 
            #                      "+DHE-DSS"))
 
2251
 
 
2252
            session = gnutls.ClientSession(self.request)
 
2253
 
 
2254
            # priority = ':'.join(("NONE", "+VERS-TLS1.1",
 
2255
            #                       "+AES-256-CBC", "+SHA1",
 
2256
            #                       "+COMP-NULL", "+CTYPE-OPENPGP",
 
2257
            #                       "+DHE-DSS"))
1205
2258
            # Use a fallback default, since this MUST be set.
1206
2259
            priority = self.server.gnutls_priority
1207
2260
            if priority is None:
1208
2261
                priority = "NORMAL"
1209
 
            (gnutls.library.functions
1210
 
             .gnutls_priority_set_direct(session._c_object,
1211
 
                                         priority, None))
1212
 
            
 
2262
            gnutls.priority_set_direct(session._c_object,
 
2263
                                       priority.encode("utf-8"),
 
2264
                                       None)
 
2265
 
1213
2266
            # Start communication using the Mandos protocol
1214
2267
            # Get protocol number
1215
2268
            line = self.request.makefile().readline()
1216
2269
            logger.debug("Protocol version: %r", line)
1217
2270
            try:
1218
2271
                if int(line.strip().split()[0]) > 1:
1219
 
                    raise RuntimeError
 
2272
                    raise RuntimeError(line)
1220
2273
            except (ValueError, IndexError, RuntimeError) as error:
1221
2274
                logger.error("Unknown protocol version: %s", error)
1222
2275
                return
1223
 
            
 
2276
 
1224
2277
            # Start GnuTLS connection
1225
2278
            try:
1226
2279
                session.handshake()
1227
 
            except gnutls.errors.GNUTLSError as error:
 
2280
            except gnutls.Error as error:
1228
2281
                logger.warning("Handshake failed: %s", error)
1229
2282
                # Do not run session.bye() here: the session is not
1230
2283
                # established.  Just abandon the request.
1231
2284
                return
1232
2285
            logger.debug("Handshake succeeded")
1233
 
            
 
2286
 
1234
2287
            approval_required = False
1235
2288
            try:
1236
 
                try:
1237
 
                    fpr = self.fingerprint(self.peer_certificate
1238
 
                                           (session))
1239
 
                except (TypeError,
1240
 
                        gnutls.errors.GNUTLSError) as error:
1241
 
                    logger.warning("Bad certificate: %s", error)
1242
 
                    return
1243
 
                logger.debug("Fingerprint: %s", fpr)
1244
 
                
1245
 
                try:
1246
 
                    client = ProxyClient(child_pipe, fpr,
 
2289
                if gnutls.has_rawpk:
 
2290
                    fpr = ""
 
2291
                    try:
 
2292
                        key_id = self.key_id(
 
2293
                            self.peer_certificate(session))
 
2294
                    except (TypeError, gnutls.Error) as error:
 
2295
                        logger.warning("Bad certificate: %s", error)
 
2296
                        return
 
2297
                    logger.debug("Key ID: %s", key_id)
 
2298
 
 
2299
                else:
 
2300
                    key_id = ""
 
2301
                    try:
 
2302
                        fpr = self.fingerprint(
 
2303
                            self.peer_certificate(session))
 
2304
                    except (TypeError, gnutls.Error) as error:
 
2305
                        logger.warning("Bad certificate: %s", error)
 
2306
                        return
 
2307
                    logger.debug("Fingerprint: %s", fpr)
 
2308
 
 
2309
                try:
 
2310
                    client = ProxyClient(child_pipe, key_id, fpr,
1247
2311
                                         self.client_address)
1248
2312
                except KeyError:
1249
2313
                    return
1250
 
                
 
2314
 
1251
2315
                if client.approval_delay:
1252
2316
                    delay = client.approval_delay
1253
2317
                    client.approvals_pending += 1
1254
2318
                    approval_required = True
1255
 
                
 
2319
 
1256
2320
                while True:
1257
2321
                    if not client.enabled:
1258
2322
                        logger.info("Client %s is disabled",
1259
 
                                       client.name)
 
2323
                                    client.name)
1260
2324
                        if self.server.use_dbus:
1261
2325
                            # Emit D-Bus signal
1262
 
                            client.Rejected("Disabled")                    
 
2326
                            client.Rejected("Disabled")
1263
2327
                        return
1264
 
                    
1265
 
                    if client._approved or not client.approval_delay:
1266
 
                        #We are approved or approval is disabled
 
2328
 
 
2329
                    if client.approved or not client.approval_delay:
 
2330
                        # We are approved or approval is disabled
1267
2331
                        break
1268
 
                    elif client._approved is None:
 
2332
                    elif client.approved is None:
1269
2333
                        logger.info("Client %s needs approval",
1270
2334
                                    client.name)
1271
2335
                        if self.server.use_dbus:
1272
2336
                            # Emit D-Bus signal
1273
2337
                            client.NeedApproval(
1274
 
                                client.approval_delay_milliseconds(),
1275
 
                                client.approved_by_default)
 
2338
                                client.approval_delay.total_seconds()
 
2339
                                * 1000, client.approved_by_default)
1276
2340
                    else:
1277
2341
                        logger.warning("Client %s was not approved",
1278
2342
                                       client.name)
1280
2344
                            # Emit D-Bus signal
1281
2345
                            client.Rejected("Denied")
1282
2346
                        return
1283
 
                    
1284
 
                    #wait until timeout or approved
1285
 
                    #x = float(client._timedelta_to_milliseconds(delay))
 
2347
 
 
2348
                    # wait until timeout or approved
1286
2349
                    time = datetime.datetime.now()
1287
2350
                    client.changedstate.acquire()
1288
 
                    client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
 
2351
                    client.changedstate.wait(delay.total_seconds())
1289
2352
                    client.changedstate.release()
1290
2353
                    time2 = datetime.datetime.now()
1291
2354
                    if (time2 - time) >= delay:
1301
2364
                            break
1302
2365
                    else:
1303
2366
                        delay -= time2 - time
1304
 
                
1305
 
                sent_size = 0
1306
 
                while sent_size < len(client.secret):
1307
 
                    try:
1308
 
                        sent = session.send(client.secret[sent_size:])
1309
 
                    except gnutls.errors.GNUTLSError as error:
1310
 
                        logger.warning("gnutls send failed")
1311
 
                        return
1312
 
                    logger.debug("Sent: %d, remaining: %d",
1313
 
                                 sent, len(client.secret)
1314
 
                                 - (sent_size + sent))
1315
 
                    sent_size += sent
1316
 
                
 
2367
 
 
2368
                try:
 
2369
                    session.send(client.secret)
 
2370
                except gnutls.Error as error:
 
2371
                    logger.warning("gnutls send failed",
 
2372
                                   exc_info=error)
 
2373
                    return
 
2374
 
1317
2375
                logger.info("Sending secret to %s", client.name)
1318
 
                # bump the timeout as if seen
1319
 
                client.checked_ok(client.extended_timeout)
 
2376
                # bump the timeout using extended_timeout
 
2377
                client.bump_timeout(client.extended_timeout)
1320
2378
                if self.server.use_dbus:
1321
2379
                    # Emit D-Bus signal
1322
2380
                    client.GotSecret()
1323
 
            
 
2381
 
1324
2382
            finally:
1325
2383
                if approval_required:
1326
2384
                    client.approvals_pending -= 1
1327
2385
                try:
1328
2386
                    session.bye()
1329
 
                except gnutls.errors.GNUTLSError as error:
1330
 
                    logger.warning("GnuTLS bye failed")
1331
 
    
 
2387
                except gnutls.Error as error:
 
2388
                    logger.warning("GnuTLS bye failed",
 
2389
                                   exc_info=error)
 
2390
 
1332
2391
    @staticmethod
1333
2392
    def peer_certificate(session):
1334
 
        "Return the peer's OpenPGP certificate as a bytestring"
1335
 
        # If not an OpenPGP certificate...
1336
 
        if (gnutls.library.functions
1337
 
            .gnutls_certificate_type_get(session._c_object)
1338
 
            != gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1339
 
            # ...do the normal thing
1340
 
            return session.peer_certificate
 
2393
        "Return the peer's certificate as a bytestring"
 
2394
        try:
 
2395
            cert_type = gnutls.certificate_type_get2(session._c_object,
 
2396
                                                     gnutls.CTYPE_PEERS)
 
2397
        except AttributeError:
 
2398
            cert_type = gnutls.certificate_type_get(session._c_object)
 
2399
        if gnutls.has_rawpk:
 
2400
            valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
 
2401
        else:
 
2402
            valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
 
2403
        # If not a valid certificate type...
 
2404
        if cert_type not in valid_cert_types:
 
2405
            logger.info("Cert type %r not in %r", cert_type,
 
2406
                        valid_cert_types)
 
2407
            # ...return invalid data
 
2408
            return b""
1341
2409
        list_size = ctypes.c_uint(1)
1342
 
        cert_list = (gnutls.library.functions
1343
 
                     .gnutls_certificate_get_peers
 
2410
        cert_list = (gnutls.certificate_get_peers
1344
2411
                     (session._c_object, ctypes.byref(list_size)))
1345
2412
        if not bool(cert_list) and list_size.value != 0:
1346
 
            raise gnutls.errors.GNUTLSError("error getting peer"
1347
 
                                            " certificate")
 
2413
            raise gnutls.Error("error getting peer certificate")
1348
2414
        if list_size.value == 0:
1349
2415
            return None
1350
2416
        cert = cert_list[0]
1351
2417
        return ctypes.string_at(cert.data, cert.size)
1352
 
    
 
2418
 
 
2419
    @staticmethod
 
2420
    def key_id(certificate):
 
2421
        "Convert a certificate bytestring to a hexdigit key ID"
 
2422
        # New GnuTLS "datum" with the public key
 
2423
        datum = gnutls.datum_t(
 
2424
            ctypes.cast(ctypes.c_char_p(certificate),
 
2425
                        ctypes.POINTER(ctypes.c_ubyte)),
 
2426
            ctypes.c_uint(len(certificate)))
 
2427
        # XXX all these need to be created in the gnutls "module"
 
2428
        # New empty GnuTLS certificate
 
2429
        pubkey = gnutls.pubkey_t()
 
2430
        gnutls.pubkey_init(ctypes.byref(pubkey))
 
2431
        # Import the raw public key into the certificate
 
2432
        gnutls.pubkey_import(pubkey,
 
2433
                             ctypes.byref(datum),
 
2434
                             gnutls.X509_FMT_DER)
 
2435
        # New buffer for the key ID
 
2436
        buf = ctypes.create_string_buffer(32)
 
2437
        buf_len = ctypes.c_size_t(len(buf))
 
2438
        # Get the key ID from the raw public key into the buffer
 
2439
        gnutls.pubkey_get_key_id(pubkey,
 
2440
                                 gnutls.KEYID_USE_SHA256,
 
2441
                                 ctypes.cast(ctypes.byref(buf),
 
2442
                                             ctypes.POINTER(ctypes.c_ubyte)),
 
2443
                                 ctypes.byref(buf_len))
 
2444
        # Deinit the certificate
 
2445
        gnutls.pubkey_deinit(pubkey)
 
2446
 
 
2447
        # Convert the buffer to a Python bytestring
 
2448
        key_id = ctypes.string_at(buf, buf_len.value)
 
2449
        # Convert the bytestring to hexadecimal notation
 
2450
        hex_key_id = binascii.hexlify(key_id).upper()
 
2451
        return hex_key_id
 
2452
 
1353
2453
    @staticmethod
1354
2454
    def fingerprint(openpgp):
1355
2455
        "Convert an OpenPGP bytestring to a hexdigit fingerprint"
1356
2456
        # New GnuTLS "datum" with the OpenPGP public key
1357
 
        datum = (gnutls.library.types
1358
 
                 .gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1359
 
                                             ctypes.POINTER
1360
 
                                             (ctypes.c_ubyte)),
1361
 
                                 ctypes.c_uint(len(openpgp))))
 
2457
        datum = gnutls.datum_t(
 
2458
            ctypes.cast(ctypes.c_char_p(openpgp),
 
2459
                        ctypes.POINTER(ctypes.c_ubyte)),
 
2460
            ctypes.c_uint(len(openpgp)))
1362
2461
        # New empty GnuTLS certificate
1363
 
        crt = gnutls.library.types.gnutls_openpgp_crt_t()
1364
 
        (gnutls.library.functions
1365
 
         .gnutls_openpgp_crt_init(ctypes.byref(crt)))
 
2462
        crt = gnutls.openpgp_crt_t()
 
2463
        gnutls.openpgp_crt_init(ctypes.byref(crt))
1366
2464
        # Import the OpenPGP public key into the certificate
1367
 
        (gnutls.library.functions
1368
 
         .gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1369
 
                                    gnutls.library.constants
1370
 
                                    .GNUTLS_OPENPGP_FMT_RAW))
 
2465
        gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
 
2466
                                  gnutls.OPENPGP_FMT_RAW)
1371
2467
        # Verify the self signature in the key
1372
2468
        crtverify = ctypes.c_uint()
1373
 
        (gnutls.library.functions
1374
 
         .gnutls_openpgp_crt_verify_self(crt, 0,
1375
 
                                         ctypes.byref(crtverify)))
 
2469
        gnutls.openpgp_crt_verify_self(crt, 0,
 
2470
                                       ctypes.byref(crtverify))
1376
2471
        if crtverify.value != 0:
1377
 
            gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1378
 
            raise (gnutls.errors.CertificateSecurityError
1379
 
                   ("Verify failed"))
 
2472
            gnutls.openpgp_crt_deinit(crt)
 
2473
            raise gnutls.CertificateSecurityError(code
 
2474
                                                  =crtverify.value)
1380
2475
        # New buffer for the fingerprint
1381
2476
        buf = ctypes.create_string_buffer(20)
1382
2477
        buf_len = ctypes.c_size_t()
1383
2478
        # Get the fingerprint from the certificate into the buffer
1384
 
        (gnutls.library.functions
1385
 
         .gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1386
 
                                             ctypes.byref(buf_len)))
 
2479
        gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
 
2480
                                           ctypes.byref(buf_len))
1387
2481
        # Deinit the certificate
1388
 
        gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
 
2482
        gnutls.openpgp_crt_deinit(crt)
1389
2483
        # Convert the buffer to a Python bytestring
1390
2484
        fpr = ctypes.string_at(buf, buf_len.value)
1391
2485
        # Convert the bytestring to hexadecimal notation
1392
 
        hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
 
2486
        hex_fpr = binascii.hexlify(fpr).upper()
1393
2487
        return hex_fpr
1394
2488
 
1395
2489
 
1396
2490
class MultiprocessingMixIn(object):
1397
2491
    """Like socketserver.ThreadingMixIn, but with multiprocessing"""
 
2492
 
1398
2493
    def sub_process_main(self, request, address):
1399
2494
        try:
1400
2495
            self.finish_request(request, address)
1401
 
        except:
 
2496
        except Exception:
1402
2497
            self.handle_error(request, address)
1403
2498
        self.close_request(request)
1404
 
            
 
2499
 
1405
2500
    def process_request(self, request, address):
1406
2501
        """Start a new process to process the request."""
1407
 
        multiprocessing.Process(target = self.sub_process_main,
1408
 
                                args = (request, address)).start()
 
2502
        proc = multiprocessing.Process(target=self.sub_process_main,
 
2503
                                       args=(request, address))
 
2504
        proc.start()
 
2505
        return proc
1409
2506
 
1410
2507
 
1411
2508
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1412
2509
    """ adds a pipe to the MixIn """
 
2510
 
1413
2511
    def process_request(self, request, client_address):
1414
2512
        """Overrides and wraps the original process_request().
1415
 
        
 
2513
 
1416
2514
        This function creates a new pipe in self.pipe
1417
2515
        """
1418
2516
        parent_pipe, self.child_pipe = multiprocessing.Pipe()
1419
 
        
1420
 
        super(MultiprocessingMixInWithPipe,
1421
 
              self).process_request(request, client_address)
 
2517
 
 
2518
        proc = MultiprocessingMixIn.process_request(self, request,
 
2519
                                                    client_address)
1422
2520
        self.child_pipe.close()
1423
 
        self.add_pipe(parent_pipe)
1424
 
    
1425
 
    def add_pipe(self, parent_pipe):
 
2521
        self.add_pipe(parent_pipe, proc)
 
2522
 
 
2523
    def add_pipe(self, parent_pipe, proc):
1426
2524
        """Dummy function; override as necessary"""
1427
 
        raise NotImplementedError
 
2525
        raise NotImplementedError()
1428
2526
 
1429
2527
 
1430
2528
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1431
2529
                     socketserver.TCPServer, object):
1432
2530
    """IPv6-capable TCP server.  Accepts 'None' as address and/or port
1433
 
    
 
2531
 
1434
2532
    Attributes:
1435
2533
        enabled:        Boolean; whether this server is activated yet
1436
2534
        interface:      None or a network interface name (string)
1437
2535
        use_ipv6:       Boolean; to use IPv6 or not
1438
2536
    """
 
2537
 
1439
2538
    def __init__(self, server_address, RequestHandlerClass,
1440
 
                 interface=None, use_ipv6=True):
 
2539
                 interface=None,
 
2540
                 use_ipv6=True,
 
2541
                 socketfd=None):
 
2542
        """If socketfd is set, use that file descriptor instead of
 
2543
        creating a new one with socket.socket().
 
2544
        """
1441
2545
        self.interface = interface
1442
2546
        if use_ipv6:
1443
2547
            self.address_family = socket.AF_INET6
 
2548
        if socketfd is not None:
 
2549
            # Save the file descriptor
 
2550
            self.socketfd = socketfd
 
2551
            # Save the original socket.socket() function
 
2552
            self.socket_socket = socket.socket
 
2553
 
 
2554
            # To implement --socket, we monkey patch socket.socket.
 
2555
            #
 
2556
            # (When socketserver.TCPServer is a new-style class, we
 
2557
            # could make self.socket into a property instead of monkey
 
2558
            # patching socket.socket.)
 
2559
            #
 
2560
            # Create a one-time-only replacement for socket.socket()
 
2561
            @functools.wraps(socket.socket)
 
2562
            def socket_wrapper(*args, **kwargs):
 
2563
                # Restore original function so subsequent calls are
 
2564
                # not affected.
 
2565
                socket.socket = self.socket_socket
 
2566
                del self.socket_socket
 
2567
                # This time only, return a new socket object from the
 
2568
                # saved file descriptor.
 
2569
                return socket.fromfd(self.socketfd, *args, **kwargs)
 
2570
            # Replace socket.socket() function with wrapper
 
2571
            socket.socket = socket_wrapper
 
2572
        # The socketserver.TCPServer.__init__ will call
 
2573
        # socket.socket(), which might be our replacement,
 
2574
        # socket_wrapper(), if socketfd was set.
1444
2575
        socketserver.TCPServer.__init__(self, server_address,
1445
2576
                                        RequestHandlerClass)
 
2577
 
1446
2578
    def server_bind(self):
1447
2579
        """This overrides the normal server_bind() function
1448
2580
        to bind to an interface if one was specified, and also NOT to
1449
2581
        bind to an address or port if they were not specified."""
 
2582
        global SO_BINDTODEVICE
1450
2583
        if self.interface is not None:
1451
2584
            if SO_BINDTODEVICE is None:
1452
 
                logger.error("SO_BINDTODEVICE does not exist;"
1453
 
                             " cannot bind to interface %s",
1454
 
                             self.interface)
1455
 
            else:
1456
 
                try:
1457
 
                    self.socket.setsockopt(socket.SOL_SOCKET,
1458
 
                                           SO_BINDTODEVICE,
1459
 
                                           str(self.interface
1460
 
                                               + '\0'))
1461
 
                except socket.error as error:
1462
 
                    if error[0] == errno.EPERM:
1463
 
                        logger.error("No permission to"
1464
 
                                     " bind to interface %s",
1465
 
                                     self.interface)
1466
 
                    elif error[0] == errno.ENOPROTOOPT:
1467
 
                        logger.error("SO_BINDTODEVICE not available;"
1468
 
                                     " cannot bind to interface %s",
1469
 
                                     self.interface)
1470
 
                    else:
1471
 
                        raise
 
2585
                # Fall back to a hard-coded value which seems to be
 
2586
                # common enough.
 
2587
                logger.warning("SO_BINDTODEVICE not found, trying 25")
 
2588
                SO_BINDTODEVICE = 25
 
2589
            try:
 
2590
                self.socket.setsockopt(
 
2591
                    socket.SOL_SOCKET, SO_BINDTODEVICE,
 
2592
                    (self.interface + "\0").encode("utf-8"))
 
2593
            except socket.error as error:
 
2594
                if error.errno == errno.EPERM:
 
2595
                    logger.error("No permission to bind to"
 
2596
                                 " interface %s", self.interface)
 
2597
                elif error.errno == errno.ENOPROTOOPT:
 
2598
                    logger.error("SO_BINDTODEVICE not available;"
 
2599
                                 " cannot bind to interface %s",
 
2600
                                 self.interface)
 
2601
                elif error.errno == errno.ENODEV:
 
2602
                    logger.error("Interface %s does not exist,"
 
2603
                                 " cannot bind", self.interface)
 
2604
                else:
 
2605
                    raise
1472
2606
        # Only bind(2) the socket if we really need to.
1473
2607
        if self.server_address[0] or self.server_address[1]:
 
2608
            if self.server_address[1]:
 
2609
                self.allow_reuse_address = True
1474
2610
            if not self.server_address[0]:
1475
2611
                if self.address_family == socket.AF_INET6:
1476
 
                    any_address = "::" # in6addr_any
 
2612
                    any_address = "::"  # in6addr_any
1477
2613
                else:
1478
 
                    any_address = socket.INADDR_ANY
 
2614
                    any_address = "0.0.0.0"  # INADDR_ANY
1479
2615
                self.server_address = (any_address,
1480
2616
                                       self.server_address[1])
1481
2617
            elif not self.server_address[1]:
1482
 
                self.server_address = (self.server_address[0],
1483
 
                                       0)
 
2618
                self.server_address = (self.server_address[0], 0)
1484
2619
#                 if self.interface:
1485
2620
#                     self.server_address = (self.server_address[0],
1486
2621
#                                            0, # port
1492
2627
 
1493
2628
class MandosServer(IPv6_TCPServer):
1494
2629
    """Mandos server.
1495
 
    
 
2630
 
1496
2631
    Attributes:
1497
2632
        clients:        set of Client objects
1498
2633
        gnutls_priority GnuTLS priority string
1499
2634
        use_dbus:       Boolean; to emit D-Bus signals or not
1500
 
    
1501
 
    Assumes a gobject.MainLoop event loop.
 
2635
 
 
2636
    Assumes a GLib.MainLoop event loop.
1502
2637
    """
 
2638
 
1503
2639
    def __init__(self, server_address, RequestHandlerClass,
1504
 
                 interface=None, use_ipv6=True, clients=None,
1505
 
                 gnutls_priority=None, use_dbus=True):
 
2640
                 interface=None,
 
2641
                 use_ipv6=True,
 
2642
                 clients=None,
 
2643
                 gnutls_priority=None,
 
2644
                 use_dbus=True,
 
2645
                 socketfd=None):
1506
2646
        self.enabled = False
1507
2647
        self.clients = clients
1508
2648
        if self.clients is None:
1509
 
            self.clients = set()
 
2649
            self.clients = {}
1510
2650
        self.use_dbus = use_dbus
1511
2651
        self.gnutls_priority = gnutls_priority
1512
2652
        IPv6_TCPServer.__init__(self, server_address,
1513
2653
                                RequestHandlerClass,
1514
 
                                interface = interface,
1515
 
                                use_ipv6 = use_ipv6)
 
2654
                                interface=interface,
 
2655
                                use_ipv6=use_ipv6,
 
2656
                                socketfd=socketfd)
 
2657
 
1516
2658
    def server_activate(self):
1517
2659
        if self.enabled:
1518
2660
            return socketserver.TCPServer.server_activate(self)
 
2661
 
1519
2662
    def enable(self):
1520
2663
        self.enabled = True
1521
 
    def add_pipe(self, parent_pipe):
 
2664
 
 
2665
    def add_pipe(self, parent_pipe, proc):
1522
2666
        # Call "handle_ipc" for both data and EOF events
1523
 
        gobject.io_add_watch(parent_pipe.fileno(),
1524
 
                             gobject.IO_IN | gobject.IO_HUP,
1525
 
                             functools.partial(self.handle_ipc,
1526
 
                                               parent_pipe = parent_pipe))
1527
 
        
1528
 
    def handle_ipc(self, source, condition, parent_pipe=None,
 
2667
        GLib.io_add_watch(
 
2668
            parent_pipe.fileno(),
 
2669
            GLib.IO_IN | GLib.IO_HUP,
 
2670
            functools.partial(self.handle_ipc,
 
2671
                              parent_pipe=parent_pipe,
 
2672
                              proc=proc))
 
2673
 
 
2674
    def handle_ipc(self, source, condition,
 
2675
                   parent_pipe=None,
 
2676
                   proc=None,
1529
2677
                   client_object=None):
1530
 
        condition_names = {
1531
 
            gobject.IO_IN: "IN",   # There is data to read.
1532
 
            gobject.IO_OUT: "OUT", # Data can be written (without
1533
 
                                    # blocking).
1534
 
            gobject.IO_PRI: "PRI", # There is urgent data to read.
1535
 
            gobject.IO_ERR: "ERR", # Error condition.
1536
 
            gobject.IO_HUP: "HUP"  # Hung up (the connection has been
1537
 
                                    # broken, usually for pipes and
1538
 
                                    # sockets).
1539
 
            }
1540
 
        conditions_string = ' | '.join(name
1541
 
                                       for cond, name in
1542
 
                                       condition_names.iteritems()
1543
 
                                       if cond & condition)
1544
 
        # error or the other end of multiprocessing.Pipe has closed
1545
 
        if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
 
2678
        # error, or the other end of multiprocessing.Pipe has closed
 
2679
        if condition & (GLib.IO_ERR | GLib.IO_HUP):
 
2680
            # Wait for other process to exit
 
2681
            proc.join()
1546
2682
            return False
1547
 
        
 
2683
 
1548
2684
        # Read a request from the child
1549
2685
        request = parent_pipe.recv()
1550
2686
        command = request[0]
1551
 
        
 
2687
 
1552
2688
        if command == 'init':
1553
 
            fpr = request[1]
1554
 
            address = request[2]
1555
 
            
1556
 
            for c in self.clients:
1557
 
                if c.fingerprint == fpr:
 
2689
            key_id = request[1].decode("ascii")
 
2690
            fpr = request[2].decode("ascii")
 
2691
            address = request[3]
 
2692
 
 
2693
            for c in self.clients.values():
 
2694
                if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
 
2695
                    continue
 
2696
                if key_id and c.key_id == key_id:
 
2697
                    client = c
 
2698
                    break
 
2699
                if fpr and c.fingerprint == fpr:
1558
2700
                    client = c
1559
2701
                    break
1560
2702
            else:
1561
 
                logger.info("Client not found for fingerprint: %s, ad"
1562
 
                            "dress: %s", fpr, address)
 
2703
                logger.info("Client not found for key ID: %s, address"
 
2704
                            ": %s", key_id or fpr, address)
1563
2705
                if self.use_dbus:
1564
2706
                    # Emit D-Bus signal
1565
 
                    mandos_dbus_service.ClientNotFound(fpr, address[0])
 
2707
                    mandos_dbus_service.ClientNotFound(key_id or fpr,
 
2708
                                                       address[0])
1566
2709
                parent_pipe.send(False)
1567
2710
                return False
1568
 
            
1569
 
            gobject.io_add_watch(parent_pipe.fileno(),
1570
 
                                 gobject.IO_IN | gobject.IO_HUP,
1571
 
                                 functools.partial(self.handle_ipc,
1572
 
                                                   parent_pipe = parent_pipe,
1573
 
                                                   client_object = client))
 
2711
 
 
2712
            GLib.io_add_watch(
 
2713
                parent_pipe.fileno(),
 
2714
                GLib.IO_IN | GLib.IO_HUP,
 
2715
                functools.partial(self.handle_ipc,
 
2716
                                  parent_pipe=parent_pipe,
 
2717
                                  proc=proc,
 
2718
                                  client_object=client))
1574
2719
            parent_pipe.send(True)
1575
 
            # remove the old hook in favor of the new above hook on same fileno
 
2720
            # remove the old hook in favor of the new above hook on
 
2721
            # same fileno
1576
2722
            return False
1577
2723
        if command == 'funcall':
1578
2724
            funcname = request[1]
1579
2725
            args = request[2]
1580
2726
            kwargs = request[3]
1581
 
            
1582
 
            parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1583
 
        
 
2727
 
 
2728
            parent_pipe.send(('data', getattr(client_object,
 
2729
                                              funcname)(*args,
 
2730
                                                        **kwargs)))
 
2731
 
1584
2732
        if command == 'getattr':
1585
2733
            attrname = request[1]
1586
 
            if callable(client_object.__getattribute__(attrname)):
1587
 
                parent_pipe.send(('function',))
 
2734
            if isinstance(client_object.__getattribute__(attrname),
 
2735
                          collections.Callable):
 
2736
                parent_pipe.send(('function', ))
1588
2737
            else:
1589
 
                parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1590
 
        
 
2738
                parent_pipe.send((
 
2739
                    'data', client_object.__getattribute__(attrname)))
 
2740
 
1591
2741
        if command == 'setattr':
1592
2742
            attrname = request[1]
1593
2743
            value = request[2]
1594
2744
            setattr(client_object, attrname, value)
1595
 
        
 
2745
 
1596
2746
        return True
1597
2747
 
1598
2748
 
 
2749
def rfc3339_duration_to_delta(duration):
 
2750
    """Parse an RFC 3339 "duration" and return a datetime.timedelta
 
2751
 
 
2752
    >>> rfc3339_duration_to_delta("P7D")
 
2753
    datetime.timedelta(7)
 
2754
    >>> rfc3339_duration_to_delta("PT60S")
 
2755
    datetime.timedelta(0, 60)
 
2756
    >>> rfc3339_duration_to_delta("PT60M")
 
2757
    datetime.timedelta(0, 3600)
 
2758
    >>> rfc3339_duration_to_delta("PT24H")
 
2759
    datetime.timedelta(1)
 
2760
    >>> rfc3339_duration_to_delta("P1W")
 
2761
    datetime.timedelta(7)
 
2762
    >>> rfc3339_duration_to_delta("PT5M30S")
 
2763
    datetime.timedelta(0, 330)
 
2764
    >>> rfc3339_duration_to_delta("P1DT3M20S")
 
2765
    datetime.timedelta(1, 200)
 
2766
    """
 
2767
 
 
2768
    # Parsing an RFC 3339 duration with regular expressions is not
 
2769
    # possible - there would have to be multiple places for the same
 
2770
    # values, like seconds.  The current code, while more esoteric, is
 
2771
    # cleaner without depending on a parsing library.  If Python had a
 
2772
    # built-in library for parsing we would use it, but we'd like to
 
2773
    # avoid excessive use of external libraries.
 
2774
 
 
2775
    # New type for defining tokens, syntax, and semantics all-in-one
 
2776
    Token = collections.namedtuple("Token", (
 
2777
        "regexp",  # To match token; if "value" is not None, must have
 
2778
                   # a "group" containing digits
 
2779
        "value",   # datetime.timedelta or None
 
2780
        "followers"))           # Tokens valid after this token
 
2781
    # RFC 3339 "duration" tokens, syntax, and semantics; taken from
 
2782
    # the "duration" ABNF definition in RFC 3339, Appendix A.
 
2783
    token_end = Token(re.compile(r"$"), None, frozenset())
 
2784
    token_second = Token(re.compile(r"(\d+)S"),
 
2785
                         datetime.timedelta(seconds=1),
 
2786
                         frozenset((token_end, )))
 
2787
    token_minute = Token(re.compile(r"(\d+)M"),
 
2788
                         datetime.timedelta(minutes=1),
 
2789
                         frozenset((token_second, token_end)))
 
2790
    token_hour = Token(re.compile(r"(\d+)H"),
 
2791
                       datetime.timedelta(hours=1),
 
2792
                       frozenset((token_minute, token_end)))
 
2793
    token_time = Token(re.compile(r"T"),
 
2794
                       None,
 
2795
                       frozenset((token_hour, token_minute,
 
2796
                                  token_second)))
 
2797
    token_day = Token(re.compile(r"(\d+)D"),
 
2798
                      datetime.timedelta(days=1),
 
2799
                      frozenset((token_time, token_end)))
 
2800
    token_month = Token(re.compile(r"(\d+)M"),
 
2801
                        datetime.timedelta(weeks=4),
 
2802
                        frozenset((token_day, token_end)))
 
2803
    token_year = Token(re.compile(r"(\d+)Y"),
 
2804
                       datetime.timedelta(weeks=52),
 
2805
                       frozenset((token_month, token_end)))
 
2806
    token_week = Token(re.compile(r"(\d+)W"),
 
2807
                       datetime.timedelta(weeks=1),
 
2808
                       frozenset((token_end, )))
 
2809
    token_duration = Token(re.compile(r"P"), None,
 
2810
                           frozenset((token_year, token_month,
 
2811
                                      token_day, token_time,
 
2812
                                      token_week)))
 
2813
    # Define starting values:
 
2814
    # Value so far
 
2815
    value = datetime.timedelta()
 
2816
    found_token = None
 
2817
    # Following valid tokens
 
2818
    followers = frozenset((token_duration, ))
 
2819
    # String left to parse
 
2820
    s = duration
 
2821
    # Loop until end token is found
 
2822
    while found_token is not token_end:
 
2823
        # Search for any currently valid tokens
 
2824
        for token in followers:
 
2825
            match = token.regexp.match(s)
 
2826
            if match is not None:
 
2827
                # Token found
 
2828
                if token.value is not None:
 
2829
                    # Value found, parse digits
 
2830
                    factor = int(match.group(1), 10)
 
2831
                    # Add to value so far
 
2832
                    value += factor * token.value
 
2833
                # Strip token from string
 
2834
                s = token.regexp.sub("", s, 1)
 
2835
                # Go to found token
 
2836
                found_token = token
 
2837
                # Set valid next tokens
 
2838
                followers = found_token.followers
 
2839
                break
 
2840
        else:
 
2841
            # No currently valid tokens were found
 
2842
            raise ValueError("Invalid RFC 3339 duration: {!r}"
 
2843
                             .format(duration))
 
2844
    # End token found
 
2845
    return value
 
2846
 
 
2847
 
1599
2848
def string_to_delta(interval):
1600
2849
    """Parse a string and return a datetime.timedelta
1601
 
    
 
2850
 
1602
2851
    >>> string_to_delta('7d')
1603
2852
    datetime.timedelta(7)
1604
2853
    >>> string_to_delta('60s')
1612
2861
    >>> string_to_delta('5m 30s')
1613
2862
    datetime.timedelta(0, 330)
1614
2863
    """
 
2864
 
 
2865
    try:
 
2866
        return rfc3339_duration_to_delta(interval)
 
2867
    except ValueError:
 
2868
        pass
 
2869
 
1615
2870
    timevalue = datetime.timedelta(0)
1616
2871
    for s in interval.split():
1617
2872
        try:
1618
 
            suffix = unicode(s[-1])
 
2873
            suffix = s[-1]
1619
2874
            value = int(s[:-1])
1620
2875
            if suffix == "d":
1621
2876
                delta = datetime.timedelta(value)
1628
2883
            elif suffix == "w":
1629
2884
                delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1630
2885
            else:
1631
 
                raise ValueError("Unknown suffix %r" % suffix)
1632
 
        except (ValueError, IndexError) as e:
 
2886
                raise ValueError("Unknown suffix {!r}".format(suffix))
 
2887
        except IndexError as e:
1633
2888
            raise ValueError(*(e.args))
1634
2889
        timevalue += delta
1635
2890
    return timevalue
1636
2891
 
1637
2892
 
1638
 
def if_nametoindex(interface):
1639
 
    """Call the C function if_nametoindex(), or equivalent
1640
 
    
1641
 
    Note: This function cannot accept a unicode string."""
1642
 
    global if_nametoindex
1643
 
    try:
1644
 
        if_nametoindex = (ctypes.cdll.LoadLibrary
1645
 
                          (ctypes.util.find_library("c"))
1646
 
                          .if_nametoindex)
1647
 
    except (OSError, AttributeError):
1648
 
        logger.warning("Doing if_nametoindex the hard way")
1649
 
        def if_nametoindex(interface):
1650
 
            "Get an interface index the hard way, i.e. using fcntl()"
1651
 
            SIOCGIFINDEX = 0x8933  # From /usr/include/linux/sockios.h
1652
 
            with contextlib.closing(socket.socket()) as s:
1653
 
                ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1654
 
                                    struct.pack(str("16s16x"),
1655
 
                                                interface))
1656
 
            interface_index = struct.unpack(str("I"),
1657
 
                                            ifreq[16:20])[0]
1658
 
            return interface_index
1659
 
    return if_nametoindex(interface)
1660
 
 
1661
 
 
1662
 
def daemon(nochdir = False, noclose = False):
 
2893
def daemon(nochdir=False, noclose=False):
1663
2894
    """See daemon(3).  Standard BSD Unix function.
1664
 
    
 
2895
 
1665
2896
    This should really exist as os.daemon, but it doesn't (yet)."""
1666
2897
    if os.fork():
1667
2898
        sys.exit()
1672
2903
        sys.exit()
1673
2904
    if not noclose:
1674
2905
        # Close all standard open file descriptors
1675
 
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
 
2906
        null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1676
2907
        if not stat.S_ISCHR(os.fstat(null).st_mode):
1677
2908
            raise OSError(errno.ENODEV,
1678
 
                          "%s not a character device"
1679
 
                          % os.path.devnull)
 
2909
                          "{} not a character device"
 
2910
                          .format(os.devnull))
1680
2911
        os.dup2(null, sys.stdin.fileno())
1681
2912
        os.dup2(null, sys.stdout.fileno())
1682
2913
        os.dup2(null, sys.stderr.fileno())
1685
2916
 
1686
2917
 
1687
2918
def main():
1688
 
    
 
2919
 
1689
2920
    ##################################################################
1690
2921
    # Parsing of options, both command line and config file
1691
 
    
 
2922
 
1692
2923
    parser = argparse.ArgumentParser()
1693
2924
    parser.add_argument("-v", "--version", action="version",
1694
 
                        version = "%%(prog)s %s" % version,
 
2925
                        version="%(prog)s {}".format(version),
1695
2926
                        help="show version number and exit")
1696
2927
    parser.add_argument("-i", "--interface", metavar="IF",
1697
2928
                        help="Bind to interface IF")
1703
2934
                        help="Run self-test")
1704
2935
    parser.add_argument("--debug", action="store_true",
1705
2936
                        help="Debug mode; run in foreground and log"
1706
 
                        " to terminal")
 
2937
                        " to terminal", default=None)
1707
2938
    parser.add_argument("--debuglevel", metavar="LEVEL",
1708
2939
                        help="Debug level for stdout output")
1709
2940
    parser.add_argument("--priority", help="GnuTLS"
1716
2947
                        " files")
1717
2948
    parser.add_argument("--no-dbus", action="store_false",
1718
2949
                        dest="use_dbus", help="Do not provide D-Bus"
1719
 
                        " system bus interface")
 
2950
                        " system bus interface", default=None)
1720
2951
    parser.add_argument("--no-ipv6", action="store_false",
1721
 
                        dest="use_ipv6", help="Do not use IPv6")
 
2952
                        dest="use_ipv6", help="Do not use IPv6",
 
2953
                        default=None)
 
2954
    parser.add_argument("--no-restore", action="store_false",
 
2955
                        dest="restore", help="Do not restore stored"
 
2956
                        " state", default=None)
 
2957
    parser.add_argument("--socket", type=int,
 
2958
                        help="Specify a file descriptor to a network"
 
2959
                        " socket to use instead of creating one")
 
2960
    parser.add_argument("--statedir", metavar="DIR",
 
2961
                        help="Directory to save/restore state in")
 
2962
    parser.add_argument("--foreground", action="store_true",
 
2963
                        help="Run in foreground", default=None)
 
2964
    parser.add_argument("--no-zeroconf", action="store_false",
 
2965
                        dest="zeroconf", help="Do not use Zeroconf",
 
2966
                        default=None)
 
2967
 
1722
2968
    options = parser.parse_args()
1723
 
    
 
2969
 
1724
2970
    if options.check:
1725
2971
        import doctest
1726
 
        doctest.testmod()
1727
 
        sys.exit()
1728
 
    
 
2972
        fail_count, test_count = doctest.testmod()
 
2973
        sys.exit(os.EX_OK if fail_count == 0 else 1)
 
2974
 
1729
2975
    # Default values for config file for server-global settings
1730
 
    server_defaults = { "interface": "",
1731
 
                        "address": "",
1732
 
                        "port": "",
1733
 
                        "debug": "False",
1734
 
                        "priority":
1735
 
                        "SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1736
 
                        "servicename": "Mandos",
1737
 
                        "use_dbus": "True",
1738
 
                        "use_ipv6": "True",
1739
 
                        "debuglevel": "",
1740
 
                        }
1741
 
    
 
2976
    if gnutls.has_rawpk:
 
2977
        priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
 
2978
                    ":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
 
2979
    else:
 
2980
        priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
 
2981
                    ":+SIGN-DSA-SHA256")
 
2982
    server_defaults = {"interface": "",
 
2983
                       "address": "",
 
2984
                       "port": "",
 
2985
                       "debug": "False",
 
2986
                       "priority": priority,
 
2987
                       "servicename": "Mandos",
 
2988
                       "use_dbus": "True",
 
2989
                       "use_ipv6": "True",
 
2990
                       "debuglevel": "",
 
2991
                       "restore": "True",
 
2992
                       "socket": "",
 
2993
                       "statedir": "/var/lib/mandos",
 
2994
                       "foreground": "False",
 
2995
                       "zeroconf": "True",
 
2996
                       }
 
2997
    del priority
 
2998
 
1742
2999
    # Parse config file for server-global settings
1743
3000
    server_config = configparser.SafeConfigParser(server_defaults)
1744
3001
    del server_defaults
1745
 
    server_config.read(os.path.join(options.configdir,
1746
 
                                    "mandos.conf"))
 
3002
    server_config.read(os.path.join(options.configdir, "mandos.conf"))
1747
3003
    # Convert the SafeConfigParser object to a dict
1748
3004
    server_settings = server_config.defaults()
1749
3005
    # Use the appropriate methods on the non-string config options
1750
 
    for option in ("debug", "use_dbus", "use_ipv6"):
 
3006
    for option in ("debug", "use_dbus", "use_ipv6", "restore",
 
3007
                   "foreground", "zeroconf"):
1751
3008
        server_settings[option] = server_config.getboolean("DEFAULT",
1752
3009
                                                           option)
1753
3010
    if server_settings["port"]:
1754
3011
        server_settings["port"] = server_config.getint("DEFAULT",
1755
3012
                                                       "port")
 
3013
    if server_settings["socket"]:
 
3014
        server_settings["socket"] = server_config.getint("DEFAULT",
 
3015
                                                         "socket")
 
3016
        # Later, stdin will, and stdout and stderr might, be dup'ed
 
3017
        # over with an opened os.devnull.  But we don't want this to
 
3018
        # happen with a supplied network socket.
 
3019
        if 0 <= server_settings["socket"] <= 2:
 
3020
            server_settings["socket"] = os.dup(server_settings
 
3021
                                               ["socket"])
1756
3022
    del server_config
1757
 
    
 
3023
 
1758
3024
    # Override the settings from the config file with command line
1759
3025
    # options, if set.
1760
3026
    for option in ("interface", "address", "port", "debug",
1761
 
                   "priority", "servicename", "configdir",
1762
 
                   "use_dbus", "use_ipv6", "debuglevel"):
 
3027
                   "priority", "servicename", "configdir", "use_dbus",
 
3028
                   "use_ipv6", "debuglevel", "restore", "statedir",
 
3029
                   "socket", "foreground", "zeroconf"):
1763
3030
        value = getattr(options, option)
1764
3031
        if value is not None:
1765
3032
            server_settings[option] = value
1766
3033
    del options
1767
3034
    # Force all strings to be unicode
1768
3035
    for option in server_settings.keys():
1769
 
        if type(server_settings[option]) is str:
1770
 
            server_settings[option] = unicode(server_settings[option])
 
3036
        if isinstance(server_settings[option], bytes):
 
3037
            server_settings[option] = (server_settings[option]
 
3038
                                       .decode("utf-8"))
 
3039
    # Force all boolean options to be boolean
 
3040
    for option in ("debug", "use_dbus", "use_ipv6", "restore",
 
3041
                   "foreground", "zeroconf"):
 
3042
        server_settings[option] = bool(server_settings[option])
 
3043
    # Debug implies foreground
 
3044
    if server_settings["debug"]:
 
3045
        server_settings["foreground"] = True
1771
3046
    # Now we have our good server settings in "server_settings"
1772
 
    
 
3047
 
1773
3048
    ##################################################################
1774
 
    
 
3049
 
 
3050
    if (not server_settings["zeroconf"]
 
3051
        and not (server_settings["port"]
 
3052
                 or server_settings["socket"] != "")):
 
3053
        parser.error("Needs port or socket to work without Zeroconf")
 
3054
 
1775
3055
    # For convenience
1776
3056
    debug = server_settings["debug"]
1777
3057
    debuglevel = server_settings["debuglevel"]
1778
3058
    use_dbus = server_settings["use_dbus"]
1779
3059
    use_ipv6 = server_settings["use_ipv6"]
1780
 
    
 
3060
    stored_state_path = os.path.join(server_settings["statedir"],
 
3061
                                     stored_state_file)
 
3062
    foreground = server_settings["foreground"]
 
3063
    zeroconf = server_settings["zeroconf"]
 
3064
 
 
3065
    if debug:
 
3066
        initlogger(debug, logging.DEBUG)
 
3067
    else:
 
3068
        if not debuglevel:
 
3069
            initlogger(debug)
 
3070
        else:
 
3071
            level = getattr(logging, debuglevel.upper())
 
3072
            initlogger(debug, level)
 
3073
 
1781
3074
    if server_settings["servicename"] != "Mandos":
1782
 
        syslogger.setFormatter(logging.Formatter
1783
 
                               ('Mandos (%s) [%%(process)d]:'
1784
 
                                ' %%(levelname)s: %%(message)s'
1785
 
                                % server_settings["servicename"]))
1786
 
    
 
3075
        syslogger.setFormatter(
 
3076
            logging.Formatter('Mandos ({}) [%(process)d]:'
 
3077
                              ' %(levelname)s: %(message)s'.format(
 
3078
                                  server_settings["servicename"])))
 
3079
 
1787
3080
    # Parse config file with clients
1788
 
    client_defaults = { "timeout": "5m",
1789
 
                        "extended_timeout": "15m",
1790
 
                        "interval": "2m",
1791
 
                        "checker": "fping -q -- %%(host)s",
1792
 
                        "host": "",
1793
 
                        "approval_delay": "0s",
1794
 
                        "approval_duration": "1s",
1795
 
                        }
1796
 
    client_config = configparser.SafeConfigParser(client_defaults)
 
3081
    client_config = configparser.SafeConfigParser(Client
 
3082
                                                  .client_defaults)
1797
3083
    client_config.read(os.path.join(server_settings["configdir"],
1798
3084
                                    "clients.conf"))
1799
 
    
 
3085
 
1800
3086
    global mandos_dbus_service
1801
3087
    mandos_dbus_service = None
1802
 
    
1803
 
    tcp_server = MandosServer((server_settings["address"],
1804
 
                               server_settings["port"]),
1805
 
                              ClientHandler,
1806
 
                              interface=(server_settings["interface"]
1807
 
                                         or None),
1808
 
                              use_ipv6=use_ipv6,
1809
 
                              gnutls_priority=
1810
 
                              server_settings["priority"],
1811
 
                              use_dbus=use_dbus)
1812
 
    if not debug:
1813
 
        pidfilename = "/var/run/mandos.pid"
1814
 
        try:
1815
 
            pidfile = open(pidfilename, "w")
1816
 
        except IOError:
1817
 
            logger.error("Could not open file %r", pidfilename)
1818
 
    
1819
 
    try:
1820
 
        uid = pwd.getpwnam("_mandos").pw_uid
1821
 
        gid = pwd.getpwnam("_mandos").pw_gid
1822
 
    except KeyError:
1823
 
        try:
1824
 
            uid = pwd.getpwnam("mandos").pw_uid
1825
 
            gid = pwd.getpwnam("mandos").pw_gid
 
3088
 
 
3089
    socketfd = None
 
3090
    if server_settings["socket"] != "":
 
3091
        socketfd = server_settings["socket"]
 
3092
    tcp_server = MandosServer(
 
3093
        (server_settings["address"], server_settings["port"]),
 
3094
        ClientHandler,
 
3095
        interface=(server_settings["interface"] or None),
 
3096
        use_ipv6=use_ipv6,
 
3097
        gnutls_priority=server_settings["priority"],
 
3098
        use_dbus=use_dbus,
 
3099
        socketfd=socketfd)
 
3100
    if not foreground:
 
3101
        pidfilename = "/run/mandos.pid"
 
3102
        if not os.path.isdir("/run/."):
 
3103
            pidfilename = "/var/run/mandos.pid"
 
3104
        pidfile = None
 
3105
        try:
 
3106
            pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
 
3107
        except IOError as e:
 
3108
            logger.error("Could not open file %r", pidfilename,
 
3109
                         exc_info=e)
 
3110
 
 
3111
    for name, group in (("_mandos", "_mandos"),
 
3112
                        ("mandos", "mandos"),
 
3113
                        ("nobody", "nogroup")):
 
3114
        try:
 
3115
            uid = pwd.getpwnam(name).pw_uid
 
3116
            gid = pwd.getpwnam(group).pw_gid
 
3117
            break
1826
3118
        except KeyError:
1827
 
            try:
1828
 
                uid = pwd.getpwnam("nobody").pw_uid
1829
 
                gid = pwd.getpwnam("nobody").pw_gid
1830
 
            except KeyError:
1831
 
                uid = 65534
1832
 
                gid = 65534
 
3119
            continue
 
3120
    else:
 
3121
        uid = 65534
 
3122
        gid = 65534
1833
3123
    try:
1834
3124
        os.setgid(gid)
1835
3125
        os.setuid(uid)
 
3126
        if debug:
 
3127
            logger.debug("Did setuid/setgid to {}:{}".format(uid,
 
3128
                                                             gid))
1836
3129
    except OSError as error:
1837
 
        if error[0] != errno.EPERM:
1838
 
            raise error
1839
 
    
1840
 
    if not debug and not debuglevel:
1841
 
        syslogger.setLevel(logging.WARNING)
1842
 
        console.setLevel(logging.WARNING)
1843
 
    if debuglevel:
1844
 
        level = getattr(logging, debuglevel.upper())
1845
 
        syslogger.setLevel(level)
1846
 
        console.setLevel(level)
1847
 
    
 
3130
        logger.warning("Failed to setuid/setgid to {}:{}: {}"
 
3131
                       .format(uid, gid, os.strerror(error.errno)))
 
3132
        if error.errno != errno.EPERM:
 
3133
            raise
 
3134
 
1848
3135
    if debug:
1849
3136
        # Enable all possible GnuTLS debugging
1850
 
        
 
3137
 
1851
3138
        # "Use a log level over 10 to enable all debugging options."
1852
3139
        # - GnuTLS manual
1853
 
        gnutls.library.functions.gnutls_global_set_log_level(11)
1854
 
        
1855
 
        @gnutls.library.types.gnutls_log_func
 
3140
        gnutls.global_set_log_level(11)
 
3141
 
 
3142
        @gnutls.log_func
1856
3143
        def debug_gnutls(level, string):
1857
3144
            logger.debug("GnuTLS: %s", string[:-1])
1858
 
        
1859
 
        (gnutls.library.functions
1860
 
         .gnutls_global_set_log_function(debug_gnutls))
1861
 
        
 
3145
 
 
3146
        gnutls.global_set_log_function(debug_gnutls)
 
3147
 
1862
3148
        # Redirect stdin so all checkers get /dev/null
1863
 
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
 
3149
        null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1864
3150
        os.dup2(null, sys.stdin.fileno())
1865
3151
        if null > 2:
1866
3152
            os.close(null)
1867
 
    else:
1868
 
        # No console logging
1869
 
        logger.removeHandler(console)
1870
 
    
 
3153
 
1871
3154
    # Need to fork before connecting to D-Bus
1872
 
    if not debug:
 
3155
    if not foreground:
1873
3156
        # Close all input and output, do double fork, etc.
1874
3157
        daemon()
1875
 
    
 
3158
 
 
3159
    # multiprocessing will use threads, so before we use GLib we need
 
3160
    # to inform GLib that threads will be used.
 
3161
    GLib.threads_init()
 
3162
 
1876
3163
    global main_loop
1877
3164
    # From the Avahi example code
1878
 
    DBusGMainLoop(set_as_default=True )
1879
 
    main_loop = gobject.MainLoop()
 
3165
    DBusGMainLoop(set_as_default=True)
 
3166
    main_loop = GLib.MainLoop()
1880
3167
    bus = dbus.SystemBus()
1881
3168
    # End of Avahi example code
1882
3169
    if use_dbus:
1883
3170
        try:
1884
 
            bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1885
 
                                            bus, do_not_queue=True)
1886
 
        except dbus.exceptions.NameExistsException as e:
1887
 
            logger.error(unicode(e) + ", disabling D-Bus")
 
3171
            bus_name = dbus.service.BusName("se.recompile.Mandos",
 
3172
                                            bus,
 
3173
                                            do_not_queue=True)
 
3174
            old_bus_name = dbus.service.BusName(
 
3175
                "se.bsnet.fukt.Mandos", bus,
 
3176
                do_not_queue=True)
 
3177
        except dbus.exceptions.DBusException as e:
 
3178
            logger.error("Disabling D-Bus:", exc_info=e)
1888
3179
            use_dbus = False
1889
3180
            server_settings["use_dbus"] = False
1890
3181
            tcp_server.use_dbus = False
1891
 
    protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1892
 
    service = AvahiService(name = server_settings["servicename"],
1893
 
                           servicetype = "_mandos._tcp",
1894
 
                           protocol = protocol, bus = bus)
1895
 
    if server_settings["interface"]:
1896
 
        service.interface = (if_nametoindex
1897
 
                             (str(server_settings["interface"])))
1898
 
    
 
3182
    if zeroconf:
 
3183
        protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
 
3184
        service = AvahiServiceToSyslog(
 
3185
            name=server_settings["servicename"],
 
3186
            servicetype="_mandos._tcp",
 
3187
            protocol=protocol,
 
3188
            bus=bus)
 
3189
        if server_settings["interface"]:
 
3190
            service.interface = if_nametoindex(
 
3191
                server_settings["interface"].encode("utf-8"))
 
3192
 
1899
3193
    global multiprocessing_manager
1900
3194
    multiprocessing_manager = multiprocessing.Manager()
1901
 
    
 
3195
 
1902
3196
    client_class = Client
1903
3197
    if use_dbus:
1904
 
        client_class = functools.partial(ClientDBus, bus = bus)
1905
 
    def client_config_items(config, section):
1906
 
        special_settings = {
1907
 
            "approved_by_default":
1908
 
                lambda: config.getboolean(section,
1909
 
                                          "approved_by_default"),
1910
 
            }
1911
 
        for name, value in config.items(section):
 
3198
        client_class = functools.partial(ClientDBus, bus=bus)
 
3199
 
 
3200
    client_settings = Client.config_parser(client_config)
 
3201
    old_client_settings = {}
 
3202
    clients_data = {}
 
3203
 
 
3204
    # This is used to redirect stdout and stderr for checker processes
 
3205
    global wnull
 
3206
    wnull = open(os.devnull, "w")  # A writable /dev/null
 
3207
    # Only used if server is running in foreground but not in debug
 
3208
    # mode
 
3209
    if debug or not foreground:
 
3210
        wnull.close()
 
3211
 
 
3212
    # Get client data and settings from last running state.
 
3213
    if server_settings["restore"]:
 
3214
        try:
 
3215
            with open(stored_state_path, "rb") as stored_state:
 
3216
                if sys.version_info.major == 2:
 
3217
                    clients_data, old_client_settings = pickle.load(
 
3218
                        stored_state)
 
3219
                else:
 
3220
                    bytes_clients_data, bytes_old_client_settings = (
 
3221
                        pickle.load(stored_state, encoding="bytes"))
 
3222
                    #   Fix bytes to strings
 
3223
                    #  clients_data
 
3224
                    # .keys()
 
3225
                    clients_data = {(key.decode("utf-8")
 
3226
                                     if isinstance(key, bytes)
 
3227
                                     else key): value
 
3228
                                    for key, value in
 
3229
                                    bytes_clients_data.items()}
 
3230
                    del bytes_clients_data
 
3231
                    for key in clients_data:
 
3232
                        value = {(k.decode("utf-8")
 
3233
                                  if isinstance(k, bytes) else k): v
 
3234
                                 for k, v in
 
3235
                                 clients_data[key].items()}
 
3236
                        clients_data[key] = value
 
3237
                        # .client_structure
 
3238
                        value["client_structure"] = [
 
3239
                            (s.decode("utf-8")
 
3240
                             if isinstance(s, bytes)
 
3241
                             else s) for s in
 
3242
                            value["client_structure"]]
 
3243
                        # .name & .host
 
3244
                        for k in ("name", "host"):
 
3245
                            if isinstance(value[k], bytes):
 
3246
                                value[k] = value[k].decode("utf-8")
 
3247
                        if not value.has_key("key_id"):
 
3248
                            value["key_id"] = ""
 
3249
                        elif not value.has_key("fingerprint"):
 
3250
                            value["fingerprint"] = ""
 
3251
                    #  old_client_settings
 
3252
                    # .keys()
 
3253
                    old_client_settings = {
 
3254
                        (key.decode("utf-8")
 
3255
                         if isinstance(key, bytes)
 
3256
                         else key): value
 
3257
                        for key, value in
 
3258
                        bytes_old_client_settings.items()}
 
3259
                    del bytes_old_client_settings
 
3260
                    # .host
 
3261
                    for value in old_client_settings.values():
 
3262
                        if isinstance(value["host"], bytes):
 
3263
                            value["host"] = (value["host"]
 
3264
                                             .decode("utf-8"))
 
3265
            os.remove(stored_state_path)
 
3266
        except IOError as e:
 
3267
            if e.errno == errno.ENOENT:
 
3268
                logger.warning("Could not load persistent state:"
 
3269
                               " {}".format(os.strerror(e.errno)))
 
3270
            else:
 
3271
                logger.critical("Could not load persistent state:",
 
3272
                                exc_info=e)
 
3273
                raise
 
3274
        except EOFError as e:
 
3275
            logger.warning("Could not load persistent state: "
 
3276
                           "EOFError:",
 
3277
                           exc_info=e)
 
3278
 
 
3279
    with PGPEngine() as pgp:
 
3280
        for client_name, client in clients_data.items():
 
3281
            # Skip removed clients
 
3282
            if client_name not in client_settings:
 
3283
                continue
 
3284
 
 
3285
            # Decide which value to use after restoring saved state.
 
3286
            # We have three different values: Old config file,
 
3287
            # new config file, and saved state.
 
3288
            # New config value takes precedence if it differs from old
 
3289
            # config value, otherwise use saved state.
 
3290
            for name, value in client_settings[client_name].items():
 
3291
                try:
 
3292
                    # For each value in new config, check if it
 
3293
                    # differs from the old config value (Except for
 
3294
                    # the "secret" attribute)
 
3295
                    if (name != "secret"
 
3296
                        and (value !=
 
3297
                             old_client_settings[client_name][name])):
 
3298
                        client[name] = value
 
3299
                except KeyError:
 
3300
                    pass
 
3301
 
 
3302
            # Clients who has passed its expire date can still be
 
3303
            # enabled if its last checker was successful.  A Client
 
3304
            # whose checker succeeded before we stored its state is
 
3305
            # assumed to have successfully run all checkers during
 
3306
            # downtime.
 
3307
            if client["enabled"]:
 
3308
                if datetime.datetime.utcnow() >= client["expires"]:
 
3309
                    if not client["last_checked_ok"]:
 
3310
                        logger.warning(
 
3311
                            "disabling client {} - Client never "
 
3312
                            "performed a successful checker".format(
 
3313
                                client_name))
 
3314
                        client["enabled"] = False
 
3315
                    elif client["last_checker_status"] != 0:
 
3316
                        logger.warning(
 
3317
                            "disabling client {} - Client last"
 
3318
                            " checker failed with error code"
 
3319
                            " {}".format(
 
3320
                                client_name,
 
3321
                                client["last_checker_status"]))
 
3322
                        client["enabled"] = False
 
3323
                    else:
 
3324
                        client["expires"] = (
 
3325
                            datetime.datetime.utcnow()
 
3326
                            + client["timeout"])
 
3327
                        logger.debug("Last checker succeeded,"
 
3328
                                     " keeping {} enabled".format(
 
3329
                                         client_name))
1912
3330
            try:
1913
 
                yield (name, special_settings[name]())
1914
 
            except KeyError:
1915
 
                yield (name, value)
1916
 
    
1917
 
    tcp_server.clients.update(set(
1918
 
            client_class(name = section,
1919
 
                         config= dict(client_config_items(
1920
 
                        client_config, section)))
1921
 
            for section in client_config.sections()))
 
3331
                client["secret"] = pgp.decrypt(
 
3332
                    client["encrypted_secret"],
 
3333
                    client_settings[client_name]["secret"])
 
3334
            except PGPError:
 
3335
                # If decryption fails, we use secret from new settings
 
3336
                logger.debug("Failed to decrypt {} old secret".format(
 
3337
                    client_name))
 
3338
                client["secret"] = (client_settings[client_name]
 
3339
                                    ["secret"])
 
3340
 
 
3341
    # Add/remove clients based on new changes made to config
 
3342
    for client_name in (set(old_client_settings)
 
3343
                        - set(client_settings)):
 
3344
        del clients_data[client_name]
 
3345
    for client_name in (set(client_settings)
 
3346
                        - set(old_client_settings)):
 
3347
        clients_data[client_name] = client_settings[client_name]
 
3348
 
 
3349
    # Create all client objects
 
3350
    for client_name, client in clients_data.items():
 
3351
        tcp_server.clients[client_name] = client_class(
 
3352
            name=client_name,
 
3353
            settings=client,
 
3354
            server_settings=server_settings)
 
3355
 
1922
3356
    if not tcp_server.clients:
1923
3357
        logger.warning("No clients defined")
1924
 
        
1925
 
    if not debug:
1926
 
        try:
1927
 
            with pidfile:
1928
 
                pid = os.getpid()
1929
 
                pidfile.write(str(pid) + "\n".encode("utf-8"))
1930
 
            del pidfile
1931
 
        except IOError:
1932
 
            logger.error("Could not write to file %r with PID %d",
1933
 
                         pidfilename, pid)
1934
 
        except NameError:
1935
 
            # "pidfile" was never created
1936
 
            pass
 
3358
 
 
3359
    if not foreground:
 
3360
        if pidfile is not None:
 
3361
            pid = os.getpid()
 
3362
            try:
 
3363
                with pidfile:
 
3364
                    print(pid, file=pidfile)
 
3365
            except IOError:
 
3366
                logger.error("Could not write to file %r with PID %d",
 
3367
                             pidfilename, pid)
 
3368
        del pidfile
1937
3369
        del pidfilename
1938
 
        
1939
 
        signal.signal(signal.SIGINT, signal.SIG_IGN)
1940
 
    
1941
 
    signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1942
 
    signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1943
 
    
 
3370
 
 
3371
    for termsig in (signal.SIGHUP, signal.SIGTERM):
 
3372
        GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
 
3373
                             lambda: main_loop.quit() and False)
 
3374
 
1944
3375
    if use_dbus:
1945
 
        class MandosDBusService(dbus.service.Object):
 
3376
 
 
3377
        @alternate_dbus_interfaces(
 
3378
            {"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
 
3379
        class MandosDBusService(DBusObjectWithObjectManager):
1946
3380
            """A D-Bus proxy object"""
 
3381
 
1947
3382
            def __init__(self):
1948
3383
                dbus.service.Object.__init__(self, bus, "/")
1949
 
            _interface = "se.bsnet.fukt.Mandos"
1950
 
            
 
3384
 
 
3385
            _interface = "se.recompile.Mandos"
 
3386
 
1951
3387
            @dbus.service.signal(_interface, signature="o")
1952
3388
            def ClientAdded(self, objpath):
1953
3389
                "D-Bus signal"
1954
3390
                pass
1955
 
            
 
3391
 
1956
3392
            @dbus.service.signal(_interface, signature="ss")
1957
 
            def ClientNotFound(self, fingerprint, address):
 
3393
            def ClientNotFound(self, key_id, address):
1958
3394
                "D-Bus signal"
1959
3395
                pass
1960
 
            
 
3396
 
 
3397
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
 
3398
                               "true"})
1961
3399
            @dbus.service.signal(_interface, signature="os")
1962
3400
            def ClientRemoved(self, objpath, name):
1963
3401
                "D-Bus signal"
1964
3402
                pass
1965
 
            
 
3403
 
 
3404
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
 
3405
                               "true"})
1966
3406
            @dbus.service.method(_interface, out_signature="ao")
1967
3407
            def GetAllClients(self):
1968
3408
                "D-Bus method"
1969
 
                return dbus.Array(c.dbus_object_path
1970
 
                                  for c in tcp_server.clients)
1971
 
            
 
3409
                return dbus.Array(c.dbus_object_path for c in
 
3410
                                  tcp_server.clients.values())
 
3411
 
 
3412
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
 
3413
                               "true"})
1972
3414
            @dbus.service.method(_interface,
1973
3415
                                 out_signature="a{oa{sv}}")
1974
3416
            def GetAllClientsWithProperties(self):
1975
3417
                "D-Bus method"
1976
3418
                return dbus.Dictionary(
1977
 
                    ((c.dbus_object_path, c.GetAll(""))
1978
 
                     for c in tcp_server.clients),
 
3419
                    {c.dbus_object_path: c.GetAll(
 
3420
                        "se.recompile.Mandos.Client")
 
3421
                     for c in tcp_server.clients.values()},
1979
3422
                    signature="oa{sv}")
1980
 
            
 
3423
 
1981
3424
            @dbus.service.method(_interface, in_signature="o")
1982
3425
            def RemoveClient(self, object_path):
1983
3426
                "D-Bus method"
1984
 
                for c in tcp_server.clients:
 
3427
                for c in tcp_server.clients.values():
1985
3428
                    if c.dbus_object_path == object_path:
1986
 
                        tcp_server.clients.remove(c)
 
3429
                        del tcp_server.clients[c.name]
1987
3430
                        c.remove_from_connection()
1988
 
                        # Don't signal anything except ClientRemoved
 
3431
                        # Don't signal the disabling
1989
3432
                        c.disable(quiet=True)
1990
 
                        # Emit D-Bus signal
1991
 
                        self.ClientRemoved(object_path, c.name)
 
3433
                        # Emit D-Bus signal for removal
 
3434
                        self.client_removed_signal(c)
1992
3435
                        return
1993
3436
                raise KeyError(object_path)
1994
 
            
 
3437
 
1995
3438
            del _interface
1996
 
        
 
3439
 
 
3440
            @dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
 
3441
                                 out_signature="a{oa{sa{sv}}}")
 
3442
            def GetManagedObjects(self):
 
3443
                """D-Bus method"""
 
3444
                return dbus.Dictionary(
 
3445
                    {client.dbus_object_path:
 
3446
                     dbus.Dictionary(
 
3447
                         {interface: client.GetAll(interface)
 
3448
                          for interface in
 
3449
                          client._get_all_interface_names()})
 
3450
                     for client in tcp_server.clients.values()})
 
3451
 
 
3452
            def client_added_signal(self, client):
 
3453
                """Send the new standard signal and the old signal"""
 
3454
                if use_dbus:
 
3455
                    # New standard signal
 
3456
                    self.InterfacesAdded(
 
3457
                        client.dbus_object_path,
 
3458
                        dbus.Dictionary(
 
3459
                            {interface: client.GetAll(interface)
 
3460
                             for interface in
 
3461
                             client._get_all_interface_names()}))
 
3462
                    # Old signal
 
3463
                    self.ClientAdded(client.dbus_object_path)
 
3464
 
 
3465
            def client_removed_signal(self, client):
 
3466
                """Send the new standard signal and the old signal"""
 
3467
                if use_dbus:
 
3468
                    # New standard signal
 
3469
                    self.InterfacesRemoved(
 
3470
                        client.dbus_object_path,
 
3471
                        client._get_all_interface_names())
 
3472
                    # Old signal
 
3473
                    self.ClientRemoved(client.dbus_object_path,
 
3474
                                       client.name)
 
3475
 
1997
3476
        mandos_dbus_service = MandosDBusService()
1998
 
    
 
3477
 
 
3478
    # Save modules to variables to exempt the modules from being
 
3479
    # unloaded before the function registered with atexit() is run.
 
3480
    mp = multiprocessing
 
3481
    wn = wnull
 
3482
 
1999
3483
    def cleanup():
2000
3484
        "Cleanup function; run on exit"
2001
 
        service.cleanup()
2002
 
        
 
3485
        if zeroconf:
 
3486
            service.cleanup()
 
3487
 
 
3488
        mp.active_children()
 
3489
        wn.close()
 
3490
        if not (tcp_server.clients or client_settings):
 
3491
            return
 
3492
 
 
3493
        # Store client before exiting. Secrets are encrypted with key
 
3494
        # based on what config file has. If config file is
 
3495
        # removed/edited, old secret will thus be unrecovable.
 
3496
        clients = {}
 
3497
        with PGPEngine() as pgp:
 
3498
            for client in tcp_server.clients.values():
 
3499
                key = client_settings[client.name]["secret"]
 
3500
                client.encrypted_secret = pgp.encrypt(client.secret,
 
3501
                                                      key)
 
3502
                client_dict = {}
 
3503
 
 
3504
                # A list of attributes that can not be pickled
 
3505
                # + secret.
 
3506
                exclude = {"bus", "changedstate", "secret",
 
3507
                           "checker", "server_settings"}
 
3508
                for name, typ in inspect.getmembers(dbus.service
 
3509
                                                    .Object):
 
3510
                    exclude.add(name)
 
3511
 
 
3512
                client_dict["encrypted_secret"] = (client
 
3513
                                                   .encrypted_secret)
 
3514
                for attr in client.client_structure:
 
3515
                    if attr not in exclude:
 
3516
                        client_dict[attr] = getattr(client, attr)
 
3517
 
 
3518
                clients[client.name] = client_dict
 
3519
                del client_settings[client.name]["secret"]
 
3520
 
 
3521
        try:
 
3522
            with tempfile.NamedTemporaryFile(
 
3523
                    mode='wb',
 
3524
                    suffix=".pickle",
 
3525
                    prefix='clients-',
 
3526
                    dir=os.path.dirname(stored_state_path),
 
3527
                    delete=False) as stored_state:
 
3528
                pickle.dump((clients, client_settings), stored_state,
 
3529
                            protocol=2)
 
3530
                tempname = stored_state.name
 
3531
            os.rename(tempname, stored_state_path)
 
3532
        except (IOError, OSError) as e:
 
3533
            if not debug:
 
3534
                try:
 
3535
                    os.remove(tempname)
 
3536
                except NameError:
 
3537
                    pass
 
3538
            if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
 
3539
                logger.warning("Could not save persistent state: {}"
 
3540
                               .format(os.strerror(e.errno)))
 
3541
            else:
 
3542
                logger.warning("Could not save persistent state:",
 
3543
                               exc_info=e)
 
3544
                raise
 
3545
 
 
3546
        # Delete all clients, and settings from config
2003
3547
        while tcp_server.clients:
2004
 
            client = tcp_server.clients.pop()
 
3548
            name, client = tcp_server.clients.popitem()
2005
3549
            if use_dbus:
2006
3550
                client.remove_from_connection()
2007
 
            client.disable_hook = None
2008
 
            # Don't signal anything except ClientRemoved
 
3551
            # Don't signal the disabling
2009
3552
            client.disable(quiet=True)
 
3553
            # Emit D-Bus signal for removal
2010
3554
            if use_dbus:
2011
 
                # Emit D-Bus signal
2012
 
                mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2013
 
                                                  client.name)
2014
 
    
 
3555
                mandos_dbus_service.client_removed_signal(client)
 
3556
        client_settings.clear()
 
3557
 
2015
3558
    atexit.register(cleanup)
2016
 
    
2017
 
    for client in tcp_server.clients:
 
3559
 
 
3560
    for client in tcp_server.clients.values():
2018
3561
        if use_dbus:
2019
 
            # Emit D-Bus signal
2020
 
            mandos_dbus_service.ClientAdded(client.dbus_object_path)
2021
 
        client.enable()
2022
 
    
 
3562
            # Emit D-Bus signal for adding
 
3563
            mandos_dbus_service.client_added_signal(client)
 
3564
        # Need to initiate checking of clients
 
3565
        if client.enabled:
 
3566
            client.init_checker()
 
3567
 
2023
3568
    tcp_server.enable()
2024
3569
    tcp_server.server_activate()
2025
 
    
 
3570
 
2026
3571
    # Find out what port we got
2027
 
    service.port = tcp_server.socket.getsockname()[1]
 
3572
    if zeroconf:
 
3573
        service.port = tcp_server.socket.getsockname()[1]
2028
3574
    if use_ipv6:
2029
3575
        logger.info("Now listening on address %r, port %d,"
2030
 
                    " flowinfo %d, scope_id %d"
2031
 
                    % tcp_server.socket.getsockname())
 
3576
                    " flowinfo %d, scope_id %d",
 
3577
                    *tcp_server.socket.getsockname())
2032
3578
    else:                       # IPv4
2033
 
        logger.info("Now listening on address %r, port %d"
2034
 
                    % tcp_server.socket.getsockname())
2035
 
    
2036
 
    #service.interface = tcp_server.socket.getsockname()[3]
2037
 
    
 
3579
        logger.info("Now listening on address %r, port %d",
 
3580
                    *tcp_server.socket.getsockname())
 
3581
 
 
3582
    # service.interface = tcp_server.socket.getsockname()[3]
 
3583
 
2038
3584
    try:
2039
 
        # From the Avahi example code
2040
 
        try:
2041
 
            service.activate()
2042
 
        except dbus.exceptions.DBusException as error:
2043
 
            logger.critical("DBusException: %s", error)
2044
 
            cleanup()
2045
 
            sys.exit(1)
2046
 
        # End of Avahi example code
2047
 
        
2048
 
        gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2049
 
                             lambda *args, **kwargs:
2050
 
                             (tcp_server.handle_request
2051
 
                              (*args[2:], **kwargs) or True))
2052
 
        
 
3585
        if zeroconf:
 
3586
            # From the Avahi example code
 
3587
            try:
 
3588
                service.activate()
 
3589
            except dbus.exceptions.DBusException as error:
 
3590
                logger.critical("D-Bus Exception", exc_info=error)
 
3591
                cleanup()
 
3592
                sys.exit(1)
 
3593
            # End of Avahi example code
 
3594
 
 
3595
        GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
 
3596
                          lambda *args, **kwargs:
 
3597
                          (tcp_server.handle_request
 
3598
                           (*args[2:], **kwargs) or True))
 
3599
 
2053
3600
        logger.debug("Starting main loop")
2054
3601
        main_loop.run()
2055
3602
    except AvahiError as error:
2056
 
        logger.critical("AvahiError: %s", error)
 
3603
        logger.critical("Avahi Error", exc_info=error)
2057
3604
        cleanup()
2058
3605
        sys.exit(1)
2059
3606
    except KeyboardInterrupt: