/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 © 2008-2012 Teddy Hogeborn
15
 
# Copyright © 2008-2012 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
 
# 
 
30
# along with Mandos.  If not, see <http://www.gnu.org/licenses/>.
 
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
 
# 
 
33
#
33
34
 
34
35
from __future__ import (division, absolute_import, print_function,
35
36
                        unicode_literals)
36
37
 
37
 
from future_builtins import *
 
38
try:
 
39
    from future_builtins import *
 
40
except ImportError:
 
41
    pass
38
42
 
39
 
import SocketServer as socketserver
 
43
try:
 
44
    import SocketServer as socketserver
 
45
except ImportError:
 
46
    import socketserver
40
47
import socket
41
48
import argparse
42
49
import datetime
43
50
import errno
44
 
import gnutls.crypto
45
 
import gnutls.connection
46
 
import gnutls.errors
47
 
import gnutls.library.functions
48
 
import gnutls.library.constants
49
 
import gnutls.library.types
50
 
import ConfigParser as configparser
 
51
try:
 
52
    import ConfigParser as configparser
 
53
except ImportError:
 
54
    import configparser
51
55
import sys
52
56
import re
53
57
import os
62
66
import struct
63
67
import fcntl
64
68
import functools
65
 
import cPickle as pickle
 
69
try:
 
70
    import cPickle as pickle
 
71
except ImportError:
 
72
    import pickle
66
73
import multiprocessing
67
74
import types
68
75
import binascii
69
76
import tempfile
70
77
import itertools
 
78
import collections
 
79
import codecs
71
80
 
72
81
import dbus
73
82
import dbus.service
74
 
import gobject
75
 
import avahi
 
83
from gi.repository import GLib
76
84
from dbus.mainloop.glib import DBusGMainLoop
77
85
import ctypes
78
86
import ctypes.util
79
87
import xml.dom.minidom
80
88
import inspect
81
 
import GnuPGInterface
82
89
 
 
90
# Try to find the value of SO_BINDTODEVICE:
83
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:
84
94
    SO_BINDTODEVICE = socket.SO_BINDTODEVICE
85
95
except AttributeError:
86
96
    try:
 
97
        # This is where SO_BINDTODEVICE was up to and including Python
 
98
        # 2.6, and also 3.2:
87
99
        from IN import SO_BINDTODEVICE
88
100
    except ImportError:
89
 
        SO_BINDTODEVICE = None
90
 
 
91
 
version = "1.6.0"
 
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"
92
119
stored_state_file = "clients.pickle"
93
120
 
94
121
logger = logging.getLogger()
95
 
syslogger = (logging.handlers.SysLogHandler
96
 
             (facility = logging.handlers.SysLogHandler.LOG_DAEMON,
97
 
              address = str("/dev/log")))
 
122
syslogger = None
98
123
 
99
124
try:
100
 
    if_nametoindex = (ctypes.cdll.LoadLibrary
101
 
                      (ctypes.util.find_library("c"))
102
 
                      .if_nametoindex)
 
125
    if_nametoindex = ctypes.cdll.LoadLibrary(
 
126
        ctypes.util.find_library("c")).if_nametoindex
103
127
except (OSError, AttributeError):
 
128
 
104
129
    def if_nametoindex(interface):
105
130
        "Get an interface index the hard way, i.e. using fcntl()"
106
131
        SIOCGIFINDEX = 0x8933  # From /usr/include/linux/sockios.h
107
132
        with contextlib.closing(socket.socket()) as s:
108
133
            ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
109
 
                                struct.pack(str("16s16x"),
110
 
                                            interface))
111
 
        interface_index = struct.unpack(str("I"),
112
 
                                        ifreq[16:20])[0]
 
134
                                struct.pack(b"16s16x", interface))
 
135
        interface_index = struct.unpack("I", ifreq[16:20])[0]
113
136
        return interface_index
114
137
 
115
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
 
116
155
def initlogger(debug, level=logging.WARNING):
117
156
    """init logger and add loglevel"""
118
 
    
 
157
 
 
158
    global syslogger
 
159
    syslogger = (logging.handlers.SysLogHandler(
 
160
        facility=logging.handlers.SysLogHandler.LOG_DAEMON,
 
161
        address="/dev/log"))
119
162
    syslogger.setFormatter(logging.Formatter
120
163
                           ('Mandos [%(process)d]: %(levelname)s:'
121
164
                            ' %(message)s'))
122
165
    logger.addHandler(syslogger)
123
 
    
 
166
 
124
167
    if debug:
125
168
        console = logging.StreamHandler()
126
169
        console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
138
181
 
139
182
class PGPEngine(object):
140
183
    """A simple class for OpenPGP symmetric encryption & decryption"""
 
184
 
141
185
    def __init__(self):
142
 
        self.gnupg = GnuPGInterface.GnuPG()
143
186
        self.tempdir = tempfile.mkdtemp(prefix="mandos-")
144
 
        self.gnupg = GnuPGInterface.GnuPG()
145
 
        self.gnupg.options.meta_interactive = False
146
 
        self.gnupg.options.homedir = self.tempdir
147
 
        self.gnupg.options.extra_args.extend(['--force-mdc',
148
 
                                              '--quiet',
149
 
                                              '--no-use-agent'])
150
 
    
 
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
 
151
206
    def __enter__(self):
152
207
        return self
153
 
    
 
208
 
154
209
    def __exit__(self, exc_type, exc_value, traceback):
155
210
        self._cleanup()
156
211
        return False
157
 
    
 
212
 
158
213
    def __del__(self):
159
214
        self._cleanup()
160
 
    
 
215
 
161
216
    def _cleanup(self):
162
217
        if self.tempdir is not None:
163
218
            # Delete contents of tempdir
164
219
            for root, dirs, files in os.walk(self.tempdir,
165
 
                                             topdown = False):
 
220
                                             topdown=False):
166
221
                for filename in files:
167
222
                    os.remove(os.path.join(root, filename))
168
223
                for dirname in dirs:
170
225
            # Remove tempdir
171
226
            os.rmdir(self.tempdir)
172
227
            self.tempdir = None
173
 
    
 
228
 
174
229
    def password_encode(self, password):
175
230
        # Passphrase can not be empty and can not contain newlines or
176
231
        # NUL bytes.  So we prefix it and hex encode it.
177
 
        return b"mandos" + binascii.hexlify(password)
178
 
    
 
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
 
179
240
    def encrypt(self, data, password):
180
 
        self.gnupg.passphrase = self.password_encode(password)
181
 
        with open(os.devnull, "w") as devnull:
182
 
            try:
183
 
                proc = self.gnupg.run(['--symmetric'],
184
 
                                      create_fhs=['stdin', 'stdout'],
185
 
                                      attach_fhs={'stderr': devnull})
186
 
                with contextlib.closing(proc.handles['stdin']) as f:
187
 
                    f.write(data)
188
 
                with contextlib.closing(proc.handles['stdout']) as f:
189
 
                    ciphertext = f.read()
190
 
                proc.wait()
191
 
            except IOError as e:
192
 
                raise PGPError(e)
193
 
        self.gnupg.passphrase = None
 
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)
194
256
        return ciphertext
195
 
    
 
257
 
196
258
    def decrypt(self, data, password):
197
 
        self.gnupg.passphrase = self.password_encode(password)
198
 
        with open(os.devnull, "w") as devnull:
199
 
            try:
200
 
                proc = self.gnupg.run(['--decrypt'],
201
 
                                      create_fhs=['stdin', 'stdout'],
202
 
                                      attach_fhs={'stderr': devnull})
203
 
                with contextlib.closing(proc.handles['stdin']) as f:
204
 
                    f.write(data)
205
 
                with contextlib.closing(proc.handles['stdout']) as f:
206
 
                    decrypted_plaintext = f.read()
207
 
                proc.wait()
208
 
            except IOError as e:
209
 
                raise PGPError(e)
210
 
        self.gnupg.passphrase = None
 
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)
211
274
        return decrypted_plaintext
212
275
 
213
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
 
 
302
 
214
303
class AvahiError(Exception):
215
304
    def __init__(self, value, *args, **kwargs):
216
305
        self.value = value
217
 
        super(AvahiError, self).__init__(value, *args, **kwargs)
218
 
    def __unicode__(self):
219
 
        return unicode(repr(self.value))
 
306
        return super(AvahiError, self).__init__(value, *args,
 
307
                                                **kwargs)
 
308
 
220
309
 
221
310
class AvahiServiceError(AvahiError):
222
311
    pass
223
312
 
 
313
 
224
314
class AvahiGroupError(AvahiError):
225
315
    pass
226
316
 
227
317
 
228
318
class AvahiService(object):
229
319
    """An Avahi (Zeroconf) service.
230
 
    
 
320
 
231
321
    Attributes:
232
322
    interface: integer; avahi.IF_UNSPEC or an interface index.
233
323
               Used to optionally bind to the specified interface.
234
324
    name: string; Example: 'Mandos'
235
325
    type: string; Example: '_mandos._tcp'.
236
 
                  See <http://www.dns-sd.org/ServiceTypes.html>
 
326
     See <https://www.iana.org/assignments/service-names-port-numbers>
237
327
    port: integer; what port to announce
238
328
    TXT: list of strings; TXT record for the service
239
329
    domain: string; Domain to publish on, default to .local if empty.
245
335
    server: D-Bus Server
246
336
    bus: dbus.SystemBus()
247
337
    """
248
 
    
249
 
    def __init__(self, interface = avahi.IF_UNSPEC, name = None,
250
 
                 servicetype = None, port = None, TXT = None,
251
 
                 domain = "", host = "", max_renames = 32768,
252
 
                 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):
253
350
        self.interface = interface
254
351
        self.name = name
255
352
        self.type = servicetype
264
361
        self.server = None
265
362
        self.bus = bus
266
363
        self.entry_group_state_changed_match = None
267
 
    
268
 
    def rename(self):
 
364
 
 
365
    def rename(self, remove=True):
269
366
        """Derived from the Avahi example code"""
270
367
        if self.rename_count >= self.max_renames:
271
368
            logger.critical("No suitable Zeroconf service name found"
272
369
                            " after %i retries, exiting.",
273
370
                            self.rename_count)
274
371
            raise AvahiServiceError("Too many renames")
275
 
        self.name = unicode(self.server
276
 
                            .GetAlternativeServiceName(self.name))
 
372
        self.name = str(
 
373
            self.server.GetAlternativeServiceName(self.name))
 
374
        self.rename_count += 1
277
375
        logger.info("Changing Zeroconf service name to %r ...",
278
376
                    self.name)
279
 
        self.remove()
 
377
        if remove:
 
378
            self.remove()
280
379
        try:
281
380
            self.add()
282
381
        except dbus.exceptions.DBusException as error:
283
 
            logger.critical("D-Bus Exception", exc_info=error)
284
 
            self.cleanup()
285
 
            os._exit(1)
286
 
        self.rename_count += 1
287
 
    
 
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
 
288
391
    def remove(self):
289
392
        """Derived from the Avahi example code"""
290
393
        if self.entry_group_state_changed_match is not None:
292
395
            self.entry_group_state_changed_match = None
293
396
        if self.group is not None:
294
397
            self.group.Reset()
295
 
    
 
398
 
296
399
    def add(self):
297
400
        """Derived from the Avahi example code"""
298
401
        self.remove()
315
418
            dbus.UInt16(self.port),
316
419
            avahi.string_array_to_txt_array(self.TXT))
317
420
        self.group.Commit()
318
 
    
 
421
 
319
422
    def entry_group_state_changed(self, state, error):
320
423
        """Derived from the Avahi example code"""
321
424
        logger.debug("Avahi entry group state change: %i", state)
322
 
        
 
425
 
323
426
        if state == avahi.ENTRY_GROUP_ESTABLISHED:
324
427
            logger.debug("Zeroconf service established.")
325
428
        elif state == avahi.ENTRY_GROUP_COLLISION:
327
430
            self.rename()
328
431
        elif state == avahi.ENTRY_GROUP_FAILURE:
329
432
            logger.critical("Avahi: Error in group state changed %s",
330
 
                            unicode(error))
331
 
            raise AvahiGroupError("State changed: {0!s}"
332
 
                                  .format(error))
333
 
    
 
433
                            str(error))
 
434
            raise AvahiGroupError("State changed: {!s}".format(error))
 
435
 
334
436
    def cleanup(self):
335
437
        """Derived from the Avahi example code"""
336
438
        if self.group is not None:
341
443
                pass
342
444
            self.group = None
343
445
        self.remove()
344
 
    
 
446
 
345
447
    def server_state_changed(self, state, error=None):
346
448
        """Derived from the Avahi example code"""
347
449
        logger.debug("Avahi server state change: %i", state)
348
 
        bad_states = { avahi.SERVER_INVALID:
349
 
                           "Zeroconf server invalid",
350
 
                       avahi.SERVER_REGISTERING: None,
351
 
                       avahi.SERVER_COLLISION:
352
 
                           "Zeroconf server name collision",
353
 
                       avahi.SERVER_FAILURE:
354
 
                           "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
        }
355
456
        if state in bad_states:
356
457
            if bad_states[state] is not None:
357
458
                if error is None:
360
461
                    logger.error(bad_states[state] + ": %r", error)
361
462
            self.cleanup()
362
463
        elif state == avahi.SERVER_RUNNING:
363
 
            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)
364
476
        else:
365
477
            if error is None:
366
478
                logger.debug("Unknown state: %r", state)
367
479
            else:
368
480
                logger.debug("Unknown state: %r: %r", state, error)
369
 
    
 
481
 
370
482
    def activate(self):
371
483
        """Derived from the Avahi example code"""
372
484
        if self.server is None:
376
488
                                    follow_name_owner_changes=True),
377
489
                avahi.DBUS_INTERFACE_SERVER)
378
490
        self.server.connect_to_signal("StateChanged",
379
 
                                 self.server_state_changed)
 
491
                                      self.server_state_changed)
380
492
        self.server_state_changed(self.server.GetState())
381
493
 
382
494
 
383
495
class AvahiServiceToSyslog(AvahiService):
384
 
    def rename(self):
 
496
    def rename(self, *args, **kwargs):
385
497
        """Add the new name to the syslog messages"""
386
 
        ret = AvahiService.rename(self)
387
 
        syslogger.setFormatter(logging.Formatter
388
 
                               ('Mandos ({0}) [%(process)d]:'
389
 
                                ' %(levelname)s: %(message)s'
390
 
                                .format(self.name)))
 
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)))
391
502
        return ret
392
503
 
393
504
 
394
 
def timedelta_to_milliseconds(td):
395
 
    "Convert a datetime.timedelta() to milliseconds"
396
 
    return ((td.days * 24 * 60 * 60 * 1000)
397
 
            + (td.seconds * 1000)
398
 
            + (td.microseconds // 1000))
 
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()
399
815
 
400
816
 
401
817
class Client(object):
402
818
    """A representation of a client host served by this server.
403
 
    
 
819
 
404
820
    Attributes:
405
821
    approved:   bool(); 'None' if not yet approved/disapproved
406
822
    approval_delay: datetime.timedelta(); Time to wait for approval
408
824
    checker:    subprocess.Popen(); a running checker process used
409
825
                                    to see if the client lives.
410
826
                                    'None' if no process is running.
411
 
    checker_callback_tag: a gobject event source tag, or None
 
827
    checker_callback_tag: a GLib event source tag, or None
412
828
    checker_command: string; External command which is run to check
413
829
                     if client lives.  %() expansions are done at
414
830
                     runtime with vars(self) as dict, so that for
415
831
                     instance %(name)s can be used in the command.
416
 
    checker_initiator_tag: a gobject event source tag, or None
 
832
    checker_initiator_tag: a GLib event source tag, or None
417
833
    created:    datetime.datetime(); (UTC) object creation
418
834
    client_structure: Object describing what attributes a client has
419
835
                      and is used for storing the client at exit
420
836
    current_checker_command: string; current running checker_command
421
 
    disable_initiator_tag: a gobject event source tag, or None
 
837
    disable_initiator_tag: a GLib event source tag, or None
422
838
    enabled:    bool()
423
839
    fingerprint: string (40 or 32 hexadecimal digits); used to
424
 
                 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
425
843
    host:       string; available for use by the checker command
426
844
    interval:   datetime.timedelta(); How often to start a new checker
427
845
    last_approval_request: datetime.datetime(); (UTC) or None
429
847
    last_checker_status: integer between 0 and 255 reflecting exit
430
848
                         status of last checker. -1 reflects crashed
431
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
432
852
    last_enabled: datetime.datetime(); (UTC) or None
433
853
    name:       string; from the config file, used in log messages and
434
854
                        D-Bus identifiers
439
859
    runtime_expansions: Allowed attributes for runtime expansion.
440
860
    expires:    datetime.datetime(); time (UTC) when a client will be
441
861
                disabled, or None
 
862
    server_settings: The server_settings dict from main()
442
863
    """
443
 
    
 
864
 
444
865
    runtime_expansions = ("approval_delay", "approval_duration",
445
 
                          "created", "enabled", "expires",
 
866
                          "created", "enabled", "expires", "key_id",
446
867
                          "fingerprint", "host", "interval",
447
868
                          "last_approval_request", "last_checked_ok",
448
869
                          "last_enabled", "name", "timeout")
449
 
    client_defaults = { "timeout": "5m",
450
 
                        "extended_timeout": "15m",
451
 
                        "interval": "2m",
452
 
                        "checker": "fping -q -- %%(host)s",
453
 
                        "host": "",
454
 
                        "approval_delay": "0s",
455
 
                        "approval_duration": "1s",
456
 
                        "approved_by_default": "True",
457
 
                        "enabled": "True",
458
 
                        }
459
 
    
460
 
    def timeout_milliseconds(self):
461
 
        "Return the 'timeout' attribute in milliseconds"
462
 
        return timedelta_to_milliseconds(self.timeout)
463
 
    
464
 
    def extended_timeout_milliseconds(self):
465
 
        "Return the 'extended_timeout' attribute in milliseconds"
466
 
        return timedelta_to_milliseconds(self.extended_timeout)
467
 
    
468
 
    def interval_milliseconds(self):
469
 
        "Return the 'interval' attribute in milliseconds"
470
 
        return timedelta_to_milliseconds(self.interval)
471
 
    
472
 
    def approval_delay_milliseconds(self):
473
 
        return timedelta_to_milliseconds(self.approval_delay)
474
 
    
 
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
 
475
882
    @staticmethod
476
883
    def config_parser(config):
477
884
        """Construct a new dict of client settings of this form:
484
891
        for client_name in config.sections():
485
892
            section = dict(config.items(client_name))
486
893
            client = settings[client_name] = {}
487
 
            
 
894
 
488
895
            client["host"] = section["host"]
489
896
            # Reformat values from string types to Python types
490
897
            client["approved_by_default"] = config.getboolean(
491
898
                client_name, "approved_by_default")
492
899
            client["enabled"] = config.getboolean(client_name,
493
900
                                                  "enabled")
494
 
            
 
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(" ", ""))
495
907
            client["fingerprint"] = (section["fingerprint"].upper()
496
908
                                     .replace(" ", ""))
497
909
            if "secret" in section:
498
 
                client["secret"] = section["secret"].decode("base64")
 
910
                client["secret"] = codecs.decode(section["secret"]
 
911
                                                 .encode("utf-8"),
 
912
                                                 "base64")
499
913
            elif "secfile" in section:
500
914
                with open(os.path.expanduser(os.path.expandvars
501
915
                                             (section["secfile"])),
502
916
                          "rb") as secfile:
503
917
                    client["secret"] = secfile.read()
504
918
            else:
505
 
                raise TypeError("No secret or secfile for section {0}"
 
919
                raise TypeError("No secret or secfile for section {}"
506
920
                                .format(section))
507
921
            client["timeout"] = string_to_delta(section["timeout"])
508
922
            client["extended_timeout"] = string_to_delta(
516
930
            client["last_approval_request"] = None
517
931
            client["last_checked_ok"] = None
518
932
            client["last_checker_status"] = -2
519
 
        
 
933
 
520
934
        return settings
521
 
    
522
 
    def __init__(self, settings, name = None):
 
935
 
 
936
    def __init__(self, settings, name=None, server_settings=None):
523
937
        self.name = name
 
938
        if server_settings is None:
 
939
            server_settings = {}
 
940
        self.server_settings = server_settings
524
941
        # adding all client settings
525
 
        for setting, value in settings.iteritems():
 
942
        for setting, value in settings.items():
526
943
            setattr(self, setting, value)
527
 
        
 
944
 
528
945
        if self.enabled:
529
946
            if not hasattr(self, "last_enabled"):
530
947
                self.last_enabled = datetime.datetime.utcnow()
534
951
        else:
535
952
            self.last_enabled = None
536
953
            self.expires = None
537
 
        
 
954
 
538
955
        logger.debug("Creating client %r", self.name)
539
 
        # Uppercase and remove spaces from fingerprint for later
540
 
        # comparison purposes with return value from the fingerprint()
541
 
        # function
 
956
        logger.debug("  Key ID: %s", self.key_id)
542
957
        logger.debug("  Fingerprint: %s", self.fingerprint)
543
958
        self.created = settings.get("created",
544
959
                                    datetime.datetime.utcnow())
545
 
        
 
960
 
546
961
        # attributes specific for this server instance
547
962
        self.checker = None
548
963
        self.checker_initiator_tag = None
551
966
        self.current_checker_command = None
552
967
        self.approved = None
553
968
        self.approvals_pending = 0
554
 
        self.changedstate = (multiprocessing_manager
555
 
                             .Condition(multiprocessing_manager
556
 
                                        .Lock()))
557
 
        self.client_structure = [attr for attr in
558
 
                                 self.__dict__.iterkeys()
 
969
        self.changedstate = multiprocessing_manager.Condition(
 
970
            multiprocessing_manager.Lock())
 
971
        self.client_structure = [attr
 
972
                                 for attr in self.__dict__.keys()
559
973
                                 if not attr.startswith("_")]
560
974
        self.client_structure.append("client_structure")
561
 
        
562
 
        for name, t in inspect.getmembers(type(self),
563
 
                                          lambda obj:
564
 
                                              isinstance(obj,
565
 
                                                         property)):
 
975
 
 
976
        for name, t in inspect.getmembers(
 
977
                type(self), lambda obj: isinstance(obj, property)):
566
978
            if not name.startswith("_"):
567
979
                self.client_structure.append(name)
568
 
    
 
980
 
569
981
    # Send notice to process children that client state has changed
570
982
    def send_changedstate(self):
571
983
        with self.changedstate:
572
984
            self.changedstate.notify_all()
573
 
    
 
985
 
574
986
    def enable(self):
575
987
        """Start this client's checker and timeout hooks"""
576
988
        if getattr(self, "enabled", False):
581
993
        self.last_enabled = datetime.datetime.utcnow()
582
994
        self.init_checker()
583
995
        self.send_changedstate()
584
 
    
 
996
 
585
997
    def disable(self, quiet=True):
586
998
        """Disable this client."""
587
999
        if not getattr(self, "enabled", False):
589
1001
        if not quiet:
590
1002
            logger.info("Disabling client %s", self.name)
591
1003
        if getattr(self, "disable_initiator_tag", None) is not None:
592
 
            gobject.source_remove(self.disable_initiator_tag)
 
1004
            GLib.source_remove(self.disable_initiator_tag)
593
1005
            self.disable_initiator_tag = None
594
1006
        self.expires = None
595
1007
        if getattr(self, "checker_initiator_tag", None) is not None:
596
 
            gobject.source_remove(self.checker_initiator_tag)
 
1008
            GLib.source_remove(self.checker_initiator_tag)
597
1009
            self.checker_initiator_tag = None
598
1010
        self.stop_checker()
599
1011
        self.enabled = False
600
1012
        if not quiet:
601
1013
            self.send_changedstate()
602
 
        # Do not run this again if called by a gobject.timeout_add
 
1014
        # Do not run this again if called by a GLib.timeout_add
603
1015
        return False
604
 
    
 
1016
 
605
1017
    def __del__(self):
606
1018
        self.disable()
607
 
    
 
1019
 
608
1020
    def init_checker(self):
609
1021
        # Schedule a new checker to be started an 'interval' from now,
610
1022
        # and every interval from then on.
611
1023
        if self.checker_initiator_tag is not None:
612
 
            gobject.source_remove(self.checker_initiator_tag)
613
 
        self.checker_initiator_tag = (gobject.timeout_add
614
 
                                      (self.interval_milliseconds(),
615
 
                                       self.start_checker))
 
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)
616
1028
        # Schedule a disable() when 'timeout' has passed
617
1029
        if self.disable_initiator_tag is not None:
618
 
            gobject.source_remove(self.disable_initiator_tag)
619
 
        self.disable_initiator_tag = (gobject.timeout_add
620
 
                                   (self.timeout_milliseconds(),
621
 
                                    self.disable))
 
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)
622
1033
        # Also start a new checker *right now*.
623
1034
        self.start_checker()
624
 
    
625
 
    def checker_callback(self, pid, condition, command):
 
1035
 
 
1036
    def checker_callback(self, source, condition, connection,
 
1037
                         command):
626
1038
        """The checker has completed, so take appropriate actions."""
627
1039
        self.checker_callback_tag = None
628
1040
        self.checker = None
629
 
        if os.WIFEXITED(condition):
630
 
            self.last_checker_status = os.WEXITSTATUS(condition)
 
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
631
1048
            if self.last_checker_status == 0:
632
1049
                logger.info("Checker for %(name)s succeeded",
633
1050
                            vars(self))
634
1051
                self.checked_ok()
635
1052
            else:
636
 
                logger.info("Checker for %(name)s failed",
637
 
                            vars(self))
 
1053
                logger.info("Checker for %(name)s failed", vars(self))
638
1054
        else:
639
1055
            self.last_checker_status = -1
 
1056
            self.last_checker_signal = -returncode
640
1057
            logger.warning("Checker for %(name)s crashed?",
641
1058
                           vars(self))
642
 
    
 
1059
        return False
 
1060
 
643
1061
    def checked_ok(self):
644
1062
        """Assert that the client has been seen, alive and well."""
645
1063
        self.last_checked_ok = datetime.datetime.utcnow()
646
1064
        self.last_checker_status = 0
 
1065
        self.last_checker_signal = None
647
1066
        self.bump_timeout()
648
 
    
 
1067
 
649
1068
    def bump_timeout(self, timeout=None):
650
1069
        """Bump up the timeout for this client."""
651
1070
        if timeout is None:
652
1071
            timeout = self.timeout
653
1072
        if self.disable_initiator_tag is not None:
654
 
            gobject.source_remove(self.disable_initiator_tag)
 
1073
            GLib.source_remove(self.disable_initiator_tag)
655
1074
            self.disable_initiator_tag = None
656
1075
        if getattr(self, "enabled", False):
657
 
            self.disable_initiator_tag = (gobject.timeout_add
658
 
                                          (timedelta_to_milliseconds
659
 
                                           (timeout), self.disable))
 
1076
            self.disable_initiator_tag = GLib.timeout_add(
 
1077
                int(timeout.total_seconds() * 1000), self.disable)
660
1078
            self.expires = datetime.datetime.utcnow() + timeout
661
 
    
 
1079
 
662
1080
    def need_approval(self):
663
1081
        self.last_approval_request = datetime.datetime.utcnow()
664
 
    
 
1082
 
665
1083
    def start_checker(self):
666
1084
        """Start a new checker subprocess if one is not running.
667
 
        
 
1085
 
668
1086
        If a checker already exists, leave it running and do
669
1087
        nothing."""
670
1088
        # The reason for not killing a running checker is that if we
675
1093
        # checkers alone, the checker would have to take more time
676
1094
        # than 'timeout' for the client to be disabled, which is as it
677
1095
        # should be.
678
 
        
679
 
        # If a checker exists, make sure it is not a zombie
680
 
        try:
681
 
            pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
682
 
        except (AttributeError, OSError) as error:
683
 
            if (isinstance(error, OSError)
684
 
                and error.errno != errno.ECHILD):
685
 
                raise error
686
 
        else:
687
 
            if pid:
688
 
                logger.warning("Checker was a zombie")
689
 
                gobject.source_remove(self.checker_callback_tag)
690
 
                self.checker_callback(pid, status,
691
 
                                      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
692
1101
        # Start a new checker if needed
693
1102
        if self.checker is None:
694
1103
            # Escape attributes for the shell
695
 
            escaped_attrs = dict(
696
 
                (attr, re.escape(unicode(getattr(self, attr))))
697
 
                for attr in
698
 
                self.runtime_expansions)
 
1104
            escaped_attrs = {
 
1105
                attr: re.escape(str(getattr(self, attr)))
 
1106
                for attr in self.runtime_expansions}
699
1107
            try:
700
1108
                command = self.checker_command % escaped_attrs
701
1109
            except TypeError as error:
702
1110
                logger.error('Could not format string "%s"',
703
 
                             self.checker_command, exc_info=error)
704
 
                return True # Try again later
 
1111
                             self.checker_command,
 
1112
                             exc_info=error)
 
1113
                return True     # Try again later
705
1114
            self.current_checker_command = command
706
 
            try:
707
 
                logger.info("Starting checker %r for %s",
708
 
                            command, self.name)
709
 
                # We don't need to redirect stdout and stderr, since
710
 
                # in normal mode, that is already done by daemon(),
711
 
                # and in debug mode we don't want to.  (Stdin is
712
 
                # always replaced by /dev/null.)
713
 
                self.checker = subprocess.Popen(command,
714
 
                                                close_fds=True,
715
 
                                                shell=True, cwd="/")
716
 
            except OSError as error:
717
 
                logger.error("Failed to start subprocess",
718
 
                             exc_info=error)
719
 
            self.checker_callback_tag = (gobject.child_watch_add
720
 
                                         (self.checker.pid,
721
 
                                          self.checker_callback,
722
 
                                          data=command))
723
 
            # The checker may have completed before the gobject
724
 
            # watch was added.  Check for this.
725
 
            pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
726
 
            if pid:
727
 
                gobject.source_remove(self.checker_callback_tag)
728
 
                self.checker_callback(pid, status, command)
729
 
        # 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
730
1141
        return True
731
 
    
 
1142
 
732
1143
    def stop_checker(self):
733
1144
        """Force the checker process, if any, to stop."""
734
1145
        if self.checker_callback_tag:
735
 
            gobject.source_remove(self.checker_callback_tag)
 
1146
            GLib.source_remove(self.checker_callback_tag)
736
1147
            self.checker_callback_tag = None
737
1148
        if getattr(self, "checker", None) is None:
738
1149
            return
739
1150
        logger.debug("Stopping checker for %(name)s", vars(self))
740
 
        try:
741
 
            self.checker.terminate()
742
 
            #time.sleep(0.5)
743
 
            #if self.checker.poll() is None:
744
 
            #    self.checker.kill()
745
 
        except OSError as error:
746
 
            if error.errno != errno.ESRCH: # No such process
747
 
                raise
 
1151
        self.checker.terminate()
748
1152
        self.checker = None
749
1153
 
750
1154
 
751
 
def dbus_service_property(dbus_interface, signature="v",
752
 
                          access="readwrite", byte_arrays=False):
 
1155
def dbus_service_property(dbus_interface,
 
1156
                          signature="v",
 
1157
                          access="readwrite",
 
1158
                          byte_arrays=False):
753
1159
    """Decorators for marking methods of a DBusObjectWithProperties to
754
1160
    become properties on the D-Bus.
755
 
    
 
1161
 
756
1162
    The decorated method will be called with no arguments by "Get"
757
1163
    and with one argument by "Set".
758
 
    
 
1164
 
759
1165
    The parameters, where they are supported, are the same as
760
1166
    dbus.service.method, except there is only "signature", since the
761
1167
    type from Get() and the type sent to Set() is the same.
764
1170
    # "Set" method, so we fail early here:
765
1171
    if byte_arrays and signature != "ay":
766
1172
        raise ValueError("Byte arrays not supported for non-'ay'"
767
 
                         " signature {0!r}".format(signature))
 
1173
                         " signature {!r}".format(signature))
 
1174
 
768
1175
    def decorator(func):
769
1176
        func._dbus_is_property = True
770
1177
        func._dbus_interface = dbus_interface
773
1180
        func._dbus_name = func.__name__
774
1181
        if func._dbus_name.endswith("_dbus_property"):
775
1182
            func._dbus_name = func._dbus_name[:-14]
776
 
        func._dbus_get_args_options = {'byte_arrays': byte_arrays }
 
1183
        func._dbus_get_args_options = {'byte_arrays': byte_arrays}
777
1184
        return func
 
1185
 
778
1186
    return decorator
779
1187
 
780
1188
 
781
1189
def dbus_interface_annotations(dbus_interface):
782
1190
    """Decorator for marking functions returning interface annotations
783
 
    
 
1191
 
784
1192
    Usage:
785
 
    
 
1193
 
786
1194
    @dbus_interface_annotations("org.example.Interface")
787
1195
    def _foo(self):  # Function name does not matter
788
1196
        return {"org.freedesktop.DBus.Deprecated": "true",
789
1197
                "org.freedesktop.DBus.Property.EmitsChangedSignal":
790
1198
                    "false"}
791
1199
    """
 
1200
 
792
1201
    def decorator(func):
793
1202
        func._dbus_is_interface = True
794
1203
        func._dbus_interface = dbus_interface
795
1204
        func._dbus_name = dbus_interface
796
1205
        return func
 
1206
 
797
1207
    return decorator
798
1208
 
799
1209
 
800
1210
def dbus_annotations(annotations):
801
1211
    """Decorator to annotate D-Bus methods, signals or properties
802
1212
    Usage:
803
 
    
 
1213
 
 
1214
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
 
1215
                       "org.freedesktop.DBus.Property."
 
1216
                       "EmitsChangedSignal": "false"})
804
1217
    @dbus_service_property("org.example.Interface", signature="b",
805
1218
                           access="r")
806
 
    @dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
807
 
                        "org.freedesktop.DBus.Property."
808
 
                        "EmitsChangedSignal": "false"})
809
1219
    def Property_dbus_property(self):
810
1220
        return dbus.Boolean(False)
 
1221
 
 
1222
    See also the DBusObjectWithAnnotations class.
811
1223
    """
 
1224
 
812
1225
    def decorator(func):
813
1226
        func._dbus_annotations = annotations
814
1227
        return func
 
1228
 
815
1229
    return decorator
816
1230
 
817
1231
 
818
1232
class DBusPropertyException(dbus.exceptions.DBusException):
819
1233
    """A base class for D-Bus property-related exceptions
820
1234
    """
821
 
    def __unicode__(self):
822
 
        return unicode(str(self))
 
1235
    pass
823
1236
 
824
1237
 
825
1238
class DBusPropertyAccessException(DBusPropertyException):
834
1247
    pass
835
1248
 
836
1249
 
837
 
class DBusObjectWithProperties(dbus.service.Object):
838
 
    """A D-Bus object with properties.
839
 
    
840
 
    Classes inheriting from this can use the dbus_service_property
841
 
    decorator to expose methods as D-Bus properties.  It exposes the
842
 
    standard Get(), Set(), and GetAll() methods on the D-Bus.
 
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.
843
1255
    """
844
 
    
 
1256
 
845
1257
    @staticmethod
846
1258
    def _is_dbus_thing(thing):
847
1259
        """Returns a function testing if an attribute is a D-Bus thing
848
 
        
 
1260
 
849
1261
        If called like _is_dbus_thing("method") it returns a function
850
1262
        suitable for use as predicate to inspect.getmembers().
851
1263
        """
852
 
        return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
 
1264
        return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
853
1265
                                   False)
854
 
    
 
1266
 
855
1267
    def _get_all_dbus_things(self, thing):
856
1268
        """Returns a generator of (name, attribute) pairs
857
1269
        """
858
 
        return ((getattr(athing.__get__(self), "_dbus_name",
859
 
                         name),
 
1270
        return ((getattr(athing.__get__(self), "_dbus_name", name),
860
1271
                 athing.__get__(self))
861
1272
                for cls in self.__class__.__mro__
862
1273
                for name, athing in
863
 
                inspect.getmembers(cls,
864
 
                                   self._is_dbus_thing(thing)))
865
 
    
 
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):
 
1340
    """A D-Bus object with properties.
 
1341
 
 
1342
    Classes inheriting from this can use the dbus_service_property
 
1343
    decorator to expose methods as D-Bus properties.  It exposes the
 
1344
    standard Get(), Set(), and GetAll() methods on the D-Bus.
 
1345
    """
 
1346
 
866
1347
    def _get_dbus_property(self, interface_name, property_name):
867
1348
        """Returns a bound method if one exists which is a D-Bus
868
1349
        property with the specified name and interface.
869
1350
        """
870
 
        for cls in  self.__class__.__mro__:
871
 
            for name, value in (inspect.getmembers
872
 
                                (cls,
873
 
                                 self._is_dbus_thing("property"))):
 
1351
        for cls in self.__class__.__mro__:
 
1352
            for name, value in inspect.getmembers(
 
1353
                    cls, self._is_dbus_thing("property")):
874
1354
                if (value._dbus_name == property_name
875
1355
                    and value._dbus_interface == interface_name):
876
1356
                    return value.__get__(self)
877
 
        
 
1357
 
878
1358
        # No such property
879
 
        raise DBusPropertyNotFound(self.dbus_object_path + ":"
880
 
                                   + interface_name + "."
881
 
                                   + property_name)
882
 
    
883
 
    @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",
884
1373
                         out_signature="v")
885
1374
    def Get(self, interface_name, property_name):
886
1375
        """Standard D-Bus property Get() method, see D-Bus standard.
892
1381
        if not hasattr(value, "variant_level"):
893
1382
            return value
894
1383
        return type(value)(value, variant_level=value.variant_level+1)
895
 
    
 
1384
 
896
1385
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
897
1386
    def Set(self, interface_name, property_name, value):
898
1387
        """Standard D-Bus property Set() method, see D-Bus standard.
904
1393
            # The byte_arrays option is not supported yet on
905
1394
            # signatures other than "ay".
906
1395
            if prop._dbus_signature != "ay":
907
 
                raise ValueError
 
1396
                raise ValueError("Byte arrays not supported for non-"
 
1397
                                 "'ay' signature {!r}"
 
1398
                                 .format(prop._dbus_signature))
908
1399
            value = dbus.ByteArray(b''.join(chr(byte)
909
1400
                                            for byte in value))
910
1401
        prop(value)
911
 
    
912
 
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
 
1402
 
 
1403
    @dbus.service.method(dbus.PROPERTIES_IFACE,
 
1404
                         in_signature="s",
913
1405
                         out_signature="a{sv}")
914
1406
    def GetAll(self, interface_name):
915
1407
        """Standard D-Bus property GetAll() method, see D-Bus
916
1408
        standard.
917
 
        
 
1409
 
918
1410
        Note: Will not include properties with access="write".
919
1411
        """
920
1412
        properties = {}
930
1422
            if not hasattr(value, "variant_level"):
931
1423
                properties[name] = value
932
1424
                continue
933
 
            properties[name] = type(value)(value, variant_level=
934
 
                                           value.variant_level+1)
 
1425
            properties[name] = type(value)(
 
1426
                value, variant_level=value.variant_level + 1)
935
1427
        return dbus.Dictionary(properties, signature="sv")
936
 
    
 
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
 
937
1437
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
938
1438
                         out_signature="s",
939
1439
                         path_keyword='object_path',
940
1440
                         connection_keyword='connection')
941
1441
    def Introspect(self, object_path, connection):
942
1442
        """Overloading of standard D-Bus method.
943
 
        
 
1443
 
944
1444
        Inserts property tags and interface annotation tags.
945
1445
        """
946
 
        xmlstring = dbus.service.Object.Introspect(self, object_path,
947
 
                                                   connection)
 
1446
        xmlstring = DBusObjectWithAnnotations.Introspect(self,
 
1447
                                                         object_path,
 
1448
                                                         connection)
948
1449
        try:
949
1450
            document = xml.dom.minidom.parseString(xmlstring)
 
1451
 
950
1452
            def make_tag(document, name, prop):
951
1453
                e = document.createElement("property")
952
1454
                e.setAttribute("name", name)
953
1455
                e.setAttribute("type", prop._dbus_signature)
954
1456
                e.setAttribute("access", prop._dbus_access)
955
1457
                return e
 
1458
 
956
1459
            for if_tag in document.getElementsByTagName("interface"):
957
1460
                # Add property tags
958
1461
                for tag in (make_tag(document, name, prop)
961
1464
                            if prop._dbus_interface
962
1465
                            == if_tag.getAttribute("name")):
963
1466
                    if_tag.appendChild(tag)
964
 
                # Add annotation tags
965
 
                for typ in ("method", "signal", "property"):
966
 
                    for tag in if_tag.getElementsByTagName(typ):
967
 
                        annots = dict()
968
 
                        for name, prop in (self.
969
 
                                           _get_all_dbus_things(typ)):
970
 
                            if (name == tag.getAttribute("name")
971
 
                                and prop._dbus_interface
972
 
                                == if_tag.getAttribute("name")):
973
 
                                annots.update(getattr
974
 
                                              (prop,
975
 
                                               "_dbus_annotations",
976
 
                                               {}))
977
 
                        for name, value in annots.iteritems():
978
 
                            ann_tag = document.createElement(
979
 
                                "annotation")
980
 
                            ann_tag.setAttribute("name", name)
981
 
                            ann_tag.setAttribute("value", value)
982
 
                            tag.appendChild(ann_tag)
983
 
                # Add interface annotation tags
984
 
                for annotation, value in dict(
985
 
                    itertools.chain.from_iterable(
986
 
                        annotations().iteritems()
987
 
                        for name, annotations in
988
 
                        self._get_all_dbus_things("interface")
989
 
                        if name == if_tag.getAttribute("name")
990
 
                        )).iteritems():
991
 
                    ann_tag = document.createElement("annotation")
992
 
                    ann_tag.setAttribute("name", annotation)
993
 
                    ann_tag.setAttribute("value", value)
994
 
                    if_tag.appendChild(ann_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)
995
1483
                # Add the names to the return values for the
996
1484
                # "org.freedesktop.DBus.Properties" methods
997
1485
                if (if_tag.getAttribute("name")
1016
1504
        return xmlstring
1017
1505
 
1018
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
 
1019
1578
def datetime_to_dbus(dt, variant_level=0):
1020
1579
    """Convert a UTC datetime.datetime() to a D-Bus type."""
1021
1580
    if dt is None:
1022
 
        return dbus.String("", variant_level = variant_level)
1023
 
    return dbus.String(dt.isoformat(),
1024
 
                       variant_level=variant_level)
 
1581
        return dbus.String("", variant_level=variant_level)
 
1582
    return dbus.String(dt.isoformat(), variant_level=variant_level)
1025
1583
 
1026
1584
 
1027
1585
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1029
1587
    dbus.service.Object, it will add alternate D-Bus attributes with
1030
1588
    interface names according to the "alt_interface_names" mapping.
1031
1589
    Usage:
1032
 
    
 
1590
 
1033
1591
    @alternate_dbus_interfaces({"org.example.Interface":
1034
1592
                                    "net.example.AlternateInterface"})
1035
1593
    class SampleDBusObject(dbus.service.Object):
1036
1594
        @dbus.service.method("org.example.Interface")
1037
1595
        def SampleDBusMethod():
1038
1596
            pass
1039
 
    
 
1597
 
1040
1598
    The above "SampleDBusMethod" on "SampleDBusObject" will be
1041
1599
    reachable via two interfaces: "org.example.Interface" and
1042
1600
    "net.example.AlternateInterface", the latter of which will have
1043
1601
    its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1044
1602
    "true", unless "deprecate" is passed with a False value.
1045
 
    
 
1603
 
1046
1604
    This works for methods and signals, and also for D-Bus properties
1047
1605
    (from DBusObjectWithProperties) and interfaces (from the
1048
1606
    dbus_interface_annotations decorator).
1049
1607
    """
 
1608
 
1050
1609
    def wrapper(cls):
1051
1610
        for orig_interface_name, alt_interface_name in (
1052
 
            alt_interface_names.iteritems()):
 
1611
                alt_interface_names.items()):
1053
1612
            attr = {}
1054
1613
            interface_names = set()
1055
1614
            # Go though all attributes of the class
1057
1616
                # Ignore non-D-Bus attributes, and D-Bus attributes
1058
1617
                # with the wrong interface name
1059
1618
                if (not hasattr(attribute, "_dbus_interface")
1060
 
                    or not attribute._dbus_interface
1061
 
                    .startswith(orig_interface_name)):
 
1619
                    or not attribute._dbus_interface.startswith(
 
1620
                        orig_interface_name)):
1062
1621
                    continue
1063
1622
                # Create an alternate D-Bus interface name based on
1064
1623
                # the current name
1065
 
                alt_interface = (attribute._dbus_interface
1066
 
                                 .replace(orig_interface_name,
1067
 
                                          alt_interface_name))
 
1624
                alt_interface = attribute._dbus_interface.replace(
 
1625
                    orig_interface_name, alt_interface_name)
1068
1626
                interface_names.add(alt_interface)
1069
1627
                # Is this a D-Bus signal?
1070
1628
                if getattr(attribute, "_dbus_is_signal", False):
1071
 
                    # Extract the original non-method function by
1072
 
                    # black magic
1073
 
                    nonmethod_func = (dict(
 
1629
                    # Extract the original non-method undecorated
 
1630
                    # function by black magic
 
1631
                    if sys.version_info.major == 2:
 
1632
                        nonmethod_func = (dict(
1074
1633
                            zip(attribute.func_code.co_freevars,
1075
 
                                attribute.__closure__))["func"]
1076
 
                                      .cell_contents)
 
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)
1077
1641
                    # Create a new, but exactly alike, function
1078
1642
                    # object, and decorate it to be a new D-Bus signal
1079
1643
                    # with the alternate D-Bus interface name
1080
 
                    new_function = (dbus.service.signal
1081
 
                                    (alt_interface,
1082
 
                                     attribute._dbus_signature)
1083
 
                                    (types.FunctionType(
1084
 
                                nonmethod_func.func_code,
1085
 
                                nonmethod_func.func_globals,
1086
 
                                nonmethod_func.func_name,
1087
 
                                nonmethod_func.func_defaults,
1088
 
                                nonmethod_func.func_closure)))
 
1644
                    new_function = copy_function(nonmethod_func)
 
1645
                    new_function = (dbus.service.signal(
 
1646
                        alt_interface,
 
1647
                        attribute._dbus_signature)(new_function))
1089
1648
                    # Copy annotations, if any
1090
1649
                    try:
1091
 
                        new_function._dbus_annotations = (
1092
 
                            dict(attribute._dbus_annotations))
 
1650
                        new_function._dbus_annotations = dict(
 
1651
                            attribute._dbus_annotations)
1093
1652
                    except AttributeError:
1094
1653
                        pass
 
1654
 
1095
1655
                    # Define a creator of a function to call both the
1096
1656
                    # original and alternate functions, so both the
1097
1657
                    # original and alternate signals gets sent when
1100
1660
                        """This function is a scope container to pass
1101
1661
                        func1 and func2 to the "call_both" function
1102
1662
                        outside of its arguments"""
 
1663
 
 
1664
                        @functools.wraps(func2)
1103
1665
                        def call_both(*args, **kwargs):
1104
1666
                            """This function will emit two D-Bus
1105
1667
                            signals by calling func1 and func2"""
1106
1668
                            func1(*args, **kwargs)
1107
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
 
1108
1676
                        return call_both
1109
1677
                    # Create the "call_both" function and add it to
1110
1678
                    # the class
1115
1683
                    # object.  Decorate it to be a new D-Bus method
1116
1684
                    # with the alternate D-Bus interface name.  Add it
1117
1685
                    # to the class.
1118
 
                    attr[attrname] = (dbus.service.method
1119
 
                                      (alt_interface,
1120
 
                                       attribute._dbus_in_signature,
1121
 
                                       attribute._dbus_out_signature)
1122
 
                                      (types.FunctionType
1123
 
                                       (attribute.func_code,
1124
 
                                        attribute.func_globals,
1125
 
                                        attribute.func_name,
1126
 
                                        attribute.func_defaults,
1127
 
                                        attribute.func_closure)))
 
1686
                    attr[attrname] = (
 
1687
                        dbus.service.method(
 
1688
                            alt_interface,
 
1689
                            attribute._dbus_in_signature,
 
1690
                            attribute._dbus_out_signature)
 
1691
                        (copy_function(attribute)))
1128
1692
                    # Copy annotations, if any
1129
1693
                    try:
1130
 
                        attr[attrname]._dbus_annotations = (
1131
 
                            dict(attribute._dbus_annotations))
 
1694
                        attr[attrname]._dbus_annotations = dict(
 
1695
                            attribute._dbus_annotations)
1132
1696
                    except AttributeError:
1133
1697
                        pass
1134
1698
                # Is this a D-Bus property?
1137
1701
                    # object, and decorate it to be a new D-Bus
1138
1702
                    # property with the alternate D-Bus interface
1139
1703
                    # name.  Add it to the class.
1140
 
                    attr[attrname] = (dbus_service_property
1141
 
                                      (alt_interface,
1142
 
                                       attribute._dbus_signature,
1143
 
                                       attribute._dbus_access,
1144
 
                                       attribute
1145
 
                                       ._dbus_get_args_options
1146
 
                                       ["byte_arrays"])
1147
 
                                      (types.FunctionType
1148
 
                                       (attribute.func_code,
1149
 
                                        attribute.func_globals,
1150
 
                                        attribute.func_name,
1151
 
                                        attribute.func_defaults,
1152
 
                                        attribute.func_closure)))
 
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)))
1153
1710
                    # Copy annotations, if any
1154
1711
                    try:
1155
 
                        attr[attrname]._dbus_annotations = (
1156
 
                            dict(attribute._dbus_annotations))
 
1712
                        attr[attrname]._dbus_annotations = dict(
 
1713
                            attribute._dbus_annotations)
1157
1714
                    except AttributeError:
1158
1715
                        pass
1159
1716
                # Is this a D-Bus interface?
1162
1719
                    # object.  Decorate it to be a new D-Bus interface
1163
1720
                    # with the alternate D-Bus interface name.  Add it
1164
1721
                    # to the class.
1165
 
                    attr[attrname] = (dbus_interface_annotations
1166
 
                                      (alt_interface)
1167
 
                                      (types.FunctionType
1168
 
                                       (attribute.func_code,
1169
 
                                        attribute.func_globals,
1170
 
                                        attribute.func_name,
1171
 
                                        attribute.func_defaults,
1172
 
                                        attribute.func_closure)))
 
1722
                    attr[attrname] = (
 
1723
                        dbus_interface_annotations(alt_interface)
 
1724
                        (copy_function(attribute)))
1173
1725
            if deprecate:
1174
1726
                # Deprecate all alternate interfaces
1175
 
                iname="_AlternateDBusNames_interface_annotation{0}"
 
1727
                iname = "_AlternateDBusNames_interface_annotation{}"
1176
1728
                for interface_name in interface_names:
 
1729
 
1177
1730
                    @dbus_interface_annotations(interface_name)
1178
1731
                    def func(self):
1179
 
                        return { "org.freedesktop.DBus.Deprecated":
1180
 
                                     "true" }
 
1732
                        return {"org.freedesktop.DBus.Deprecated":
 
1733
                                "true"}
1181
1734
                    # Find an unused name
1182
1735
                    for aname in (iname.format(i)
1183
1736
                                  for i in itertools.count()):
1187
1740
            if interface_names:
1188
1741
                # Replace the class with a new subclass of it with
1189
1742
                # methods, signals, etc. as created above.
1190
 
                cls = type(b"{0}Alternate".format(cls.__name__),
1191
 
                           (cls,), attr)
 
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)
1192
1749
        return cls
 
1750
 
1193
1751
    return wrapper
1194
1752
 
1195
1753
 
1196
1754
@alternate_dbus_interfaces({"se.recompile.Mandos":
1197
 
                                "se.bsnet.fukt.Mandos"})
 
1755
                            "se.bsnet.fukt.Mandos"})
1198
1756
class ClientDBus(Client, DBusObjectWithProperties):
1199
1757
    """A Client class using D-Bus
1200
 
    
 
1758
 
1201
1759
    Attributes:
1202
1760
    dbus_object_path: dbus.ObjectPath
1203
1761
    bus: dbus.SystemBus()
1204
1762
    """
1205
 
    
 
1763
 
1206
1764
    runtime_expansions = (Client.runtime_expansions
1207
 
                          + ("dbus_object_path",))
1208
 
    
 
1765
                          + ("dbus_object_path", ))
 
1766
 
 
1767
    _interface = "se.recompile.Mandos.Client"
 
1768
 
1209
1769
    # dbus.service.Object doesn't use super(), so we can't either.
1210
 
    
1211
 
    def __init__(self, bus = None, *args, **kwargs):
 
1770
 
 
1771
    def __init__(self, bus=None, *args, **kwargs):
1212
1772
        self.bus = bus
1213
1773
        Client.__init__(self, *args, **kwargs)
1214
1774
        # Only now, when this client is initialized, can it show up on
1215
1775
        # the D-Bus
1216
 
        client_object_name = unicode(self.name).translate(
 
1776
        client_object_name = str(self.name).translate(
1217
1777
            {ord("."): ord("_"),
1218
1778
             ord("-"): ord("_")})
1219
 
        self.dbus_object_path = (dbus.ObjectPath
1220
 
                                 ("/clients/" + client_object_name))
 
1779
        self.dbus_object_path = dbus.ObjectPath(
 
1780
            "/clients/" + client_object_name)
1221
1781
        DBusObjectWithProperties.__init__(self, self.bus,
1222
1782
                                          self.dbus_object_path)
1223
 
    
1224
 
    def notifychangeproperty(transform_func,
1225
 
                             dbus_name, type_func=lambda x: x,
1226
 
                             variant_level=1):
 
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):
1227
1789
        """ Modify a variable so that it's a property which announces
1228
1790
        its changes to DBus.
1229
 
        
 
1791
 
1230
1792
        transform_fun: Function that takes a value and a variant_level
1231
1793
                       and transforms it to a D-Bus type.
1232
1794
        dbus_name: D-Bus name of the variable
1234
1796
                   to the D-Bus.  Default: no transform
1235
1797
        variant_level: D-Bus variant level.  Default: 1
1236
1798
        """
1237
 
        attrname = "_{0}".format(dbus_name)
 
1799
        attrname = "_{}".format(dbus_name)
 
1800
 
1238
1801
        def setter(self, value):
1239
1802
            if hasattr(self, "dbus_object_path"):
1240
1803
                if (not hasattr(self, attrname) or
1241
1804
                    type_func(getattr(self, attrname, None))
1242
1805
                    != type_func(value)):
1243
 
                    dbus_value = transform_func(type_func(value),
1244
 
                                                variant_level
1245
 
                                                =variant_level)
1246
 
                    self.PropertyChanged(dbus.String(dbus_name),
1247
 
                                         dbus_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())
1248
1821
            setattr(self, attrname, value)
1249
 
        
 
1822
 
1250
1823
        return property(lambda self: getattr(self, attrname), setter)
1251
 
    
 
1824
 
1252
1825
    expires = notifychangeproperty(datetime_to_dbus, "Expires")
1253
1826
    approvals_pending = notifychangeproperty(dbus.Boolean,
1254
1827
                                             "ApprovalPending",
1255
 
                                             type_func = bool)
 
1828
                                             type_func=bool)
1256
1829
    enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1257
1830
    last_enabled = notifychangeproperty(datetime_to_dbus,
1258
1831
                                        "LastEnabled")
1259
 
    checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1260
 
                                   type_func = lambda checker:
1261
 
                                       checker is not None)
 
1832
    checker = notifychangeproperty(
 
1833
        dbus.Boolean, "CheckerRunning",
 
1834
        type_func=lambda checker: checker is not None)
1262
1835
    last_checked_ok = notifychangeproperty(datetime_to_dbus,
1263
1836
                                           "LastCheckedOK")
1264
1837
    last_checker_status = notifychangeproperty(dbus.Int16,
1267
1840
        datetime_to_dbus, "LastApprovalRequest")
1268
1841
    approved_by_default = notifychangeproperty(dbus.Boolean,
1269
1842
                                               "ApprovedByDefault")
1270
 
    approval_delay = notifychangeproperty(dbus.UInt64,
1271
 
                                          "ApprovalDelay",
1272
 
                                          type_func =
1273
 
                                          timedelta_to_milliseconds)
 
1843
    approval_delay = notifychangeproperty(
 
1844
        dbus.UInt64, "ApprovalDelay",
 
1845
        type_func=lambda td: td.total_seconds() * 1000)
1274
1846
    approval_duration = notifychangeproperty(
1275
1847
        dbus.UInt64, "ApprovalDuration",
1276
 
        type_func = timedelta_to_milliseconds)
 
1848
        type_func=lambda td: td.total_seconds() * 1000)
1277
1849
    host = notifychangeproperty(dbus.String, "Host")
1278
 
    timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1279
 
                                   type_func =
1280
 
                                   timedelta_to_milliseconds)
 
1850
    timeout = notifychangeproperty(
 
1851
        dbus.UInt64, "Timeout",
 
1852
        type_func=lambda td: td.total_seconds() * 1000)
1281
1853
    extended_timeout = notifychangeproperty(
1282
1854
        dbus.UInt64, "ExtendedTimeout",
1283
 
        type_func = timedelta_to_milliseconds)
1284
 
    interval = notifychangeproperty(dbus.UInt64,
1285
 
                                    "Interval",
1286
 
                                    type_func =
1287
 
                                    timedelta_to_milliseconds)
 
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)
1288
1859
    checker_command = notifychangeproperty(dbus.String, "Checker")
1289
 
    
 
1860
    secret = notifychangeproperty(dbus.ByteArray, "Secret",
 
1861
                                  invalidate_only=True)
 
1862
 
1290
1863
    del notifychangeproperty
1291
 
    
 
1864
 
1292
1865
    def __del__(self, *args, **kwargs):
1293
1866
        try:
1294
1867
            self.remove_from_connection()
1297
1870
        if hasattr(DBusObjectWithProperties, "__del__"):
1298
1871
            DBusObjectWithProperties.__del__(self, *args, **kwargs)
1299
1872
        Client.__del__(self, *args, **kwargs)
1300
 
    
1301
 
    def checker_callback(self, pid, condition, command,
1302
 
                         *args, **kwargs):
1303
 
        self.checker_callback_tag = None
1304
 
        self.checker = None
1305
 
        if os.WIFEXITED(condition):
1306
 
            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:
1307
1881
            # Emit D-Bus signal
1308
1882
            self.CheckerCompleted(dbus.Int16(exitstatus),
1309
 
                                  dbus.Int64(condition),
 
1883
                                  # This is specific to GNU libC
 
1884
                                  dbus.Int64(exitstatus << 8),
1310
1885
                                  dbus.String(command))
1311
1886
        else:
1312
1887
            # Emit D-Bus signal
1313
1888
            self.CheckerCompleted(dbus.Int16(-1),
1314
 
                                  dbus.Int64(condition),
 
1889
                                  dbus.Int64(
 
1890
                                      # This is specific to GNU libC
 
1891
                                      (exitstatus << 8)
 
1892
                                      | self.last_checker_signal),
1315
1893
                                  dbus.String(command))
1316
 
        
1317
 
        return Client.checker_callback(self, pid, condition, command,
1318
 
                                       *args, **kwargs)
1319
 
    
 
1894
        return ret
 
1895
 
1320
1896
    def start_checker(self, *args, **kwargs):
1321
 
        old_checker = self.checker
1322
 
        if self.checker is not None:
1323
 
            old_checker_pid = self.checker.pid
1324
 
        else:
1325
 
            old_checker_pid = None
 
1897
        old_checker_pid = getattr(self.checker, "pid", None)
1326
1898
        r = Client.start_checker(self, *args, **kwargs)
1327
1899
        # Only if new checker process was started
1328
1900
        if (self.checker is not None
1330
1902
            # Emit D-Bus signal
1331
1903
            self.CheckerStarted(self.current_checker_command)
1332
1904
        return r
1333
 
    
 
1905
 
1334
1906
    def _reset_approved(self):
1335
1907
        self.approved = None
1336
1908
        return False
1337
 
    
 
1909
 
1338
1910
    def approve(self, value=True):
1339
1911
        self.approved = value
1340
 
        gobject.timeout_add(timedelta_to_milliseconds
1341
 
                            (self.approval_duration),
1342
 
                            self._reset_approved)
 
1912
        GLib.timeout_add(int(self.approval_duration.total_seconds()
 
1913
                             * 1000), self._reset_approved)
1343
1914
        self.send_changedstate()
1344
 
    
1345
 
    ## D-Bus methods, signals & properties
1346
 
    _interface = "se.recompile.Mandos.Client"
1347
 
    
1348
 
    ## Interfaces
1349
 
    
1350
 
    @dbus_interface_annotations(_interface)
1351
 
    def _foo(self):
1352
 
        return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1353
 
                     "false"}
1354
 
    
1355
 
    ## Signals
1356
 
    
 
1915
 
 
1916
    #  D-Bus methods, signals & properties
 
1917
 
 
1918
    #  Interfaces
 
1919
 
 
1920
    #  Signals
 
1921
 
1357
1922
    # CheckerCompleted - signal
1358
1923
    @dbus.service.signal(_interface, signature="nxs")
1359
1924
    def CheckerCompleted(self, exitcode, waitstatus, command):
1360
1925
        "D-Bus signal"
1361
1926
        pass
1362
 
    
 
1927
 
1363
1928
    # CheckerStarted - signal
1364
1929
    @dbus.service.signal(_interface, signature="s")
1365
1930
    def CheckerStarted(self, command):
1366
1931
        "D-Bus signal"
1367
1932
        pass
1368
 
    
 
1933
 
1369
1934
    # PropertyChanged - signal
 
1935
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1370
1936
    @dbus.service.signal(_interface, signature="sv")
1371
1937
    def PropertyChanged(self, property, value):
1372
1938
        "D-Bus signal"
1373
1939
        pass
1374
 
    
 
1940
 
1375
1941
    # GotSecret - signal
1376
1942
    @dbus.service.signal(_interface)
1377
1943
    def GotSecret(self):
1380
1946
        server to mandos-client
1381
1947
        """
1382
1948
        pass
1383
 
    
 
1949
 
1384
1950
    # Rejected - signal
1385
1951
    @dbus.service.signal(_interface, signature="s")
1386
1952
    def Rejected(self, reason):
1387
1953
        "D-Bus signal"
1388
1954
        pass
1389
 
    
 
1955
 
1390
1956
    # NeedApproval - signal
1391
1957
    @dbus.service.signal(_interface, signature="tb")
1392
1958
    def NeedApproval(self, timeout, default):
1393
1959
        "D-Bus signal"
1394
1960
        return self.need_approval()
1395
 
    
1396
 
    ## Methods
1397
 
    
 
1961
 
 
1962
    #  Methods
 
1963
 
1398
1964
    # Approve - method
1399
1965
    @dbus.service.method(_interface, in_signature="b")
1400
1966
    def Approve(self, value):
1401
1967
        self.approve(value)
1402
 
    
 
1968
 
1403
1969
    # CheckedOK - method
1404
1970
    @dbus.service.method(_interface)
1405
1971
    def CheckedOK(self):
1406
1972
        self.checked_ok()
1407
 
    
 
1973
 
1408
1974
    # Enable - method
 
1975
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1409
1976
    @dbus.service.method(_interface)
1410
1977
    def Enable(self):
1411
1978
        "D-Bus method"
1412
1979
        self.enable()
1413
 
    
 
1980
 
1414
1981
    # StartChecker - method
 
1982
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1415
1983
    @dbus.service.method(_interface)
1416
1984
    def StartChecker(self):
1417
1985
        "D-Bus method"
1418
1986
        self.start_checker()
1419
 
    
 
1987
 
1420
1988
    # Disable - method
 
1989
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1421
1990
    @dbus.service.method(_interface)
1422
1991
    def Disable(self):
1423
1992
        "D-Bus method"
1424
1993
        self.disable()
1425
 
    
 
1994
 
1426
1995
    # StopChecker - method
 
1996
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1427
1997
    @dbus.service.method(_interface)
1428
1998
    def StopChecker(self):
1429
1999
        self.stop_checker()
1430
 
    
1431
 
    ## Properties
1432
 
    
 
2000
 
 
2001
    #  Properties
 
2002
 
1433
2003
    # ApprovalPending - property
1434
2004
    @dbus_service_property(_interface, signature="b", access="read")
1435
2005
    def ApprovalPending_dbus_property(self):
1436
2006
        return dbus.Boolean(bool(self.approvals_pending))
1437
 
    
 
2007
 
1438
2008
    # ApprovedByDefault - property
1439
 
    @dbus_service_property(_interface, signature="b",
 
2009
    @dbus_service_property(_interface,
 
2010
                           signature="b",
1440
2011
                           access="readwrite")
1441
2012
    def ApprovedByDefault_dbus_property(self, value=None):
1442
2013
        if value is None:       # get
1443
2014
            return dbus.Boolean(self.approved_by_default)
1444
2015
        self.approved_by_default = bool(value)
1445
 
    
 
2016
 
1446
2017
    # ApprovalDelay - property
1447
 
    @dbus_service_property(_interface, signature="t",
 
2018
    @dbus_service_property(_interface,
 
2019
                           signature="t",
1448
2020
                           access="readwrite")
1449
2021
    def ApprovalDelay_dbus_property(self, value=None):
1450
2022
        if value is None:       # get
1451
 
            return dbus.UInt64(self.approval_delay_milliseconds())
 
2023
            return dbus.UInt64(self.approval_delay.total_seconds()
 
2024
                               * 1000)
1452
2025
        self.approval_delay = datetime.timedelta(0, 0, 0, value)
1453
 
    
 
2026
 
1454
2027
    # ApprovalDuration - property
1455
 
    @dbus_service_property(_interface, signature="t",
 
2028
    @dbus_service_property(_interface,
 
2029
                           signature="t",
1456
2030
                           access="readwrite")
1457
2031
    def ApprovalDuration_dbus_property(self, value=None):
1458
2032
        if value is None:       # get
1459
 
            return dbus.UInt64(timedelta_to_milliseconds(
1460
 
                    self.approval_duration))
 
2033
            return dbus.UInt64(self.approval_duration.total_seconds()
 
2034
                               * 1000)
1461
2035
        self.approval_duration = datetime.timedelta(0, 0, 0, value)
1462
 
    
 
2036
 
1463
2037
    # Name - property
 
2038
    @dbus_annotations(
 
2039
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1464
2040
    @dbus_service_property(_interface, signature="s", access="read")
1465
2041
    def Name_dbus_property(self):
1466
2042
        return dbus.String(self.name)
1467
 
    
 
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
 
1468
2051
    # Fingerprint - property
 
2052
    @dbus_annotations(
 
2053
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1469
2054
    @dbus_service_property(_interface, signature="s", access="read")
1470
2055
    def Fingerprint_dbus_property(self):
1471
2056
        return dbus.String(self.fingerprint)
1472
 
    
 
2057
 
1473
2058
    # Host - property
1474
 
    @dbus_service_property(_interface, signature="s",
 
2059
    @dbus_service_property(_interface,
 
2060
                           signature="s",
1475
2061
                           access="readwrite")
1476
2062
    def Host_dbus_property(self, value=None):
1477
2063
        if value is None:       # get
1478
2064
            return dbus.String(self.host)
1479
 
        self.host = unicode(value)
1480
 
    
 
2065
        self.host = str(value)
 
2066
 
1481
2067
    # Created - property
 
2068
    @dbus_annotations(
 
2069
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1482
2070
    @dbus_service_property(_interface, signature="s", access="read")
1483
2071
    def Created_dbus_property(self):
1484
2072
        return datetime_to_dbus(self.created)
1485
 
    
 
2073
 
1486
2074
    # LastEnabled - property
1487
2075
    @dbus_service_property(_interface, signature="s", access="read")
1488
2076
    def LastEnabled_dbus_property(self):
1489
2077
        return datetime_to_dbus(self.last_enabled)
1490
 
    
 
2078
 
1491
2079
    # Enabled - property
1492
 
    @dbus_service_property(_interface, signature="b",
 
2080
    @dbus_service_property(_interface,
 
2081
                           signature="b",
1493
2082
                           access="readwrite")
1494
2083
    def Enabled_dbus_property(self, value=None):
1495
2084
        if value is None:       # get
1498
2087
            self.enable()
1499
2088
        else:
1500
2089
            self.disable()
1501
 
    
 
2090
 
1502
2091
    # LastCheckedOK - property
1503
 
    @dbus_service_property(_interface, signature="s",
 
2092
    @dbus_service_property(_interface,
 
2093
                           signature="s",
1504
2094
                           access="readwrite")
1505
2095
    def LastCheckedOK_dbus_property(self, value=None):
1506
2096
        if value is not None:
1507
2097
            self.checked_ok()
1508
2098
            return
1509
2099
        return datetime_to_dbus(self.last_checked_ok)
1510
 
    
 
2100
 
1511
2101
    # LastCheckerStatus - property
1512
 
    @dbus_service_property(_interface, signature="n",
1513
 
                           access="read")
 
2102
    @dbus_service_property(_interface, signature="n", access="read")
1514
2103
    def LastCheckerStatus_dbus_property(self):
1515
2104
        return dbus.Int16(self.last_checker_status)
1516
 
    
 
2105
 
1517
2106
    # Expires - property
1518
2107
    @dbus_service_property(_interface, signature="s", access="read")
1519
2108
    def Expires_dbus_property(self):
1520
2109
        return datetime_to_dbus(self.expires)
1521
 
    
 
2110
 
1522
2111
    # LastApprovalRequest - property
1523
2112
    @dbus_service_property(_interface, signature="s", access="read")
1524
2113
    def LastApprovalRequest_dbus_property(self):
1525
2114
        return datetime_to_dbus(self.last_approval_request)
1526
 
    
 
2115
 
1527
2116
    # Timeout - property
1528
 
    @dbus_service_property(_interface, signature="t",
 
2117
    @dbus_service_property(_interface,
 
2118
                           signature="t",
1529
2119
                           access="readwrite")
1530
2120
    def Timeout_dbus_property(self, value=None):
1531
2121
        if value is None:       # get
1532
 
            return dbus.UInt64(self.timeout_milliseconds())
 
2122
            return dbus.UInt64(self.timeout.total_seconds() * 1000)
1533
2123
        old_timeout = self.timeout
1534
2124
        self.timeout = datetime.timedelta(0, 0, 0, value)
1535
2125
        # Reschedule disabling
1543
2133
                if (getattr(self, "disable_initiator_tag", None)
1544
2134
                    is None):
1545
2135
                    return
1546
 
                gobject.source_remove(self.disable_initiator_tag)
1547
 
                self.disable_initiator_tag = (
1548
 
                    gobject.timeout_add(
1549
 
                        timedelta_to_milliseconds(self.expires - now),
1550
 
                        self.disable))
1551
 
    
 
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
 
1552
2141
    # ExtendedTimeout - property
1553
 
    @dbus_service_property(_interface, signature="t",
 
2142
    @dbus_service_property(_interface,
 
2143
                           signature="t",
1554
2144
                           access="readwrite")
1555
2145
    def ExtendedTimeout_dbus_property(self, value=None):
1556
2146
        if value is None:       # get
1557
 
            return dbus.UInt64(self.extended_timeout_milliseconds())
 
2147
            return dbus.UInt64(self.extended_timeout.total_seconds()
 
2148
                               * 1000)
1558
2149
        self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1559
 
    
 
2150
 
1560
2151
    # Interval - property
1561
 
    @dbus_service_property(_interface, signature="t",
 
2152
    @dbus_service_property(_interface,
 
2153
                           signature="t",
1562
2154
                           access="readwrite")
1563
2155
    def Interval_dbus_property(self, value=None):
1564
2156
        if value is None:       # get
1565
 
            return dbus.UInt64(self.interval_milliseconds())
 
2157
            return dbus.UInt64(self.interval.total_seconds() * 1000)
1566
2158
        self.interval = datetime.timedelta(0, 0, 0, value)
1567
2159
        if getattr(self, "checker_initiator_tag", None) is None:
1568
2160
            return
1569
2161
        if self.enabled:
1570
2162
            # Reschedule checker run
1571
 
            gobject.source_remove(self.checker_initiator_tag)
1572
 
            self.checker_initiator_tag = (gobject.timeout_add
1573
 
                                          (value, self.start_checker))
1574
 
            self.start_checker()    # Start one now, too
1575
 
    
 
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
 
1576
2168
    # Checker - property
1577
 
    @dbus_service_property(_interface, signature="s",
 
2169
    @dbus_service_property(_interface,
 
2170
                           signature="s",
1578
2171
                           access="readwrite")
1579
2172
    def Checker_dbus_property(self, value=None):
1580
2173
        if value is None:       # get
1581
2174
            return dbus.String(self.checker_command)
1582
 
        self.checker_command = unicode(value)
1583
 
    
 
2175
        self.checker_command = str(value)
 
2176
 
1584
2177
    # CheckerRunning - property
1585
 
    @dbus_service_property(_interface, signature="b",
 
2178
    @dbus_service_property(_interface,
 
2179
                           signature="b",
1586
2180
                           access="readwrite")
1587
2181
    def CheckerRunning_dbus_property(self, value=None):
1588
2182
        if value is None:       # get
1591
2185
            self.start_checker()
1592
2186
        else:
1593
2187
            self.stop_checker()
1594
 
    
 
2188
 
1595
2189
    # ObjectPath - property
 
2190
    @dbus_annotations(
 
2191
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
 
2192
         "org.freedesktop.DBus.Deprecated": "true"})
1596
2193
    @dbus_service_property(_interface, signature="o", access="read")
1597
2194
    def ObjectPath_dbus_property(self):
1598
 
        return self.dbus_object_path # is already a dbus.ObjectPath
1599
 
    
 
2195
        return self.dbus_object_path  # is already a dbus.ObjectPath
 
2196
 
1600
2197
    # Secret = property
1601
 
    @dbus_service_property(_interface, signature="ay",
1602
 
                           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)
1603
2205
    def Secret_dbus_property(self, value):
1604
 
        self.secret = str(value)
1605
 
    
 
2206
        self.secret = bytes(value)
 
2207
 
1606
2208
    del _interface
1607
2209
 
1608
2210
 
1609
2211
class ProxyClient(object):
1610
 
    def __init__(self, child_pipe, fpr, address):
 
2212
    def __init__(self, child_pipe, key_id, fpr, address):
1611
2213
        self._pipe = child_pipe
1612
 
        self._pipe.send(('init', fpr, address))
 
2214
        self._pipe.send(('init', key_id, fpr, address))
1613
2215
        if not self._pipe.recv():
1614
 
            raise KeyError()
1615
 
    
 
2216
            raise KeyError(key_id or fpr)
 
2217
 
1616
2218
    def __getattribute__(self, name):
1617
2219
        if name == '_pipe':
1618
2220
            return super(ProxyClient, self).__getattribute__(name)
1621
2223
        if data[0] == 'data':
1622
2224
            return data[1]
1623
2225
        if data[0] == 'function':
 
2226
 
1624
2227
            def func(*args, **kwargs):
1625
2228
                self._pipe.send(('funcall', name, args, kwargs))
1626
2229
                return self._pipe.recv()[1]
 
2230
 
1627
2231
            return func
1628
 
    
 
2232
 
1629
2233
    def __setattr__(self, name, value):
1630
2234
        if name == '_pipe':
1631
2235
            return super(ProxyClient, self).__setattr__(name, value)
1634
2238
 
1635
2239
class ClientHandler(socketserver.BaseRequestHandler, object):
1636
2240
    """A class to handle client connections.
1637
 
    
 
2241
 
1638
2242
    Instantiated once for each connection to handle it.
1639
2243
    Note: This will run in its own forked process."""
1640
 
    
 
2244
 
1641
2245
    def handle(self):
1642
2246
        with contextlib.closing(self.server.child_pipe) as child_pipe:
1643
2247
            logger.info("TCP connection from: %s",
1644
 
                        unicode(self.client_address))
 
2248
                        str(self.client_address))
1645
2249
            logger.debug("Pipe FD: %d",
1646
2250
                         self.server.child_pipe.fileno())
1647
 
            
1648
 
            session = (gnutls.connection
1649
 
                       .ClientSession(self.request,
1650
 
                                      gnutls.connection
1651
 
                                      .X509Credentials()))
1652
 
            
1653
 
            # Note: gnutls.connection.X509Credentials is really a
1654
 
            # generic GnuTLS certificate credentials object so long as
1655
 
            # no X.509 keys are added to it.  Therefore, we can use it
1656
 
            # here despite using OpenPGP certificates.
1657
 
            
1658
 
            #priority = ':'.join(("NONE", "+VERS-TLS1.1",
1659
 
            #                      "+AES-256-CBC", "+SHA1",
1660
 
            #                      "+COMP-NULL", "+CTYPE-OPENPGP",
1661
 
            #                      "+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"))
1662
2258
            # Use a fallback default, since this MUST be set.
1663
2259
            priority = self.server.gnutls_priority
1664
2260
            if priority is None:
1665
2261
                priority = "NORMAL"
1666
 
            (gnutls.library.functions
1667
 
             .gnutls_priority_set_direct(session._c_object,
1668
 
                                         priority, None))
1669
 
            
 
2262
            gnutls.priority_set_direct(session._c_object,
 
2263
                                       priority.encode("utf-8"),
 
2264
                                       None)
 
2265
 
1670
2266
            # Start communication using the Mandos protocol
1671
2267
            # Get protocol number
1672
2268
            line = self.request.makefile().readline()
1673
2269
            logger.debug("Protocol version: %r", line)
1674
2270
            try:
1675
2271
                if int(line.strip().split()[0]) > 1:
1676
 
                    raise RuntimeError
 
2272
                    raise RuntimeError(line)
1677
2273
            except (ValueError, IndexError, RuntimeError) as error:
1678
2274
                logger.error("Unknown protocol version: %s", error)
1679
2275
                return
1680
 
            
 
2276
 
1681
2277
            # Start GnuTLS connection
1682
2278
            try:
1683
2279
                session.handshake()
1684
 
            except gnutls.errors.GNUTLSError as error:
 
2280
            except gnutls.Error as error:
1685
2281
                logger.warning("Handshake failed: %s", error)
1686
2282
                # Do not run session.bye() here: the session is not
1687
2283
                # established.  Just abandon the request.
1688
2284
                return
1689
2285
            logger.debug("Handshake succeeded")
1690
 
            
 
2286
 
1691
2287
            approval_required = False
1692
2288
            try:
1693
 
                try:
1694
 
                    fpr = self.fingerprint(self.peer_certificate
1695
 
                                           (session))
1696
 
                except (TypeError,
1697
 
                        gnutls.errors.GNUTLSError) as error:
1698
 
                    logger.warning("Bad certificate: %s", error)
1699
 
                    return
1700
 
                logger.debug("Fingerprint: %s", fpr)
1701
 
                
1702
 
                try:
1703
 
                    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,
1704
2311
                                         self.client_address)
1705
2312
                except KeyError:
1706
2313
                    return
1707
 
                
 
2314
 
1708
2315
                if client.approval_delay:
1709
2316
                    delay = client.approval_delay
1710
2317
                    client.approvals_pending += 1
1711
2318
                    approval_required = True
1712
 
                
 
2319
 
1713
2320
                while True:
1714
2321
                    if not client.enabled:
1715
2322
                        logger.info("Client %s is disabled",
1716
 
                                       client.name)
 
2323
                                    client.name)
1717
2324
                        if self.server.use_dbus:
1718
2325
                            # Emit D-Bus signal
1719
2326
                            client.Rejected("Disabled")
1720
2327
                        return
1721
 
                    
 
2328
 
1722
2329
                    if client.approved or not client.approval_delay:
1723
 
                        #We are approved or approval is disabled
 
2330
                        # We are approved or approval is disabled
1724
2331
                        break
1725
2332
                    elif client.approved is None:
1726
2333
                        logger.info("Client %s needs approval",
1728
2335
                        if self.server.use_dbus:
1729
2336
                            # Emit D-Bus signal
1730
2337
                            client.NeedApproval(
1731
 
                                client.approval_delay_milliseconds(),
1732
 
                                client.approved_by_default)
 
2338
                                client.approval_delay.total_seconds()
 
2339
                                * 1000, client.approved_by_default)
1733
2340
                    else:
1734
2341
                        logger.warning("Client %s was not approved",
1735
2342
                                       client.name)
1737
2344
                            # Emit D-Bus signal
1738
2345
                            client.Rejected("Denied")
1739
2346
                        return
1740
 
                    
1741
 
                    #wait until timeout or approved
 
2347
 
 
2348
                    # wait until timeout or approved
1742
2349
                    time = datetime.datetime.now()
1743
2350
                    client.changedstate.acquire()
1744
 
                    client.changedstate.wait(
1745
 
                        float(timedelta_to_milliseconds(delay)
1746
 
                              / 1000))
 
2351
                    client.changedstate.wait(delay.total_seconds())
1747
2352
                    client.changedstate.release()
1748
2353
                    time2 = datetime.datetime.now()
1749
2354
                    if (time2 - time) >= delay:
1759
2364
                            break
1760
2365
                    else:
1761
2366
                        delay -= time2 - time
1762
 
                
1763
 
                sent_size = 0
1764
 
                while sent_size < len(client.secret):
1765
 
                    try:
1766
 
                        sent = session.send(client.secret[sent_size:])
1767
 
                    except gnutls.errors.GNUTLSError as error:
1768
 
                        logger.warning("gnutls send failed",
1769
 
                                       exc_info=error)
1770
 
                        return
1771
 
                    logger.debug("Sent: %d, remaining: %d",
1772
 
                                 sent, len(client.secret)
1773
 
                                 - (sent_size + sent))
1774
 
                    sent_size += sent
1775
 
                
 
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
 
1776
2375
                logger.info("Sending secret to %s", client.name)
1777
2376
                # bump the timeout using extended_timeout
1778
2377
                client.bump_timeout(client.extended_timeout)
1779
2378
                if self.server.use_dbus:
1780
2379
                    # Emit D-Bus signal
1781
2380
                    client.GotSecret()
1782
 
            
 
2381
 
1783
2382
            finally:
1784
2383
                if approval_required:
1785
2384
                    client.approvals_pending -= 1
1786
2385
                try:
1787
2386
                    session.bye()
1788
 
                except gnutls.errors.GNUTLSError as error:
 
2387
                except gnutls.Error as error:
1789
2388
                    logger.warning("GnuTLS bye failed",
1790
2389
                                   exc_info=error)
1791
 
    
 
2390
 
1792
2391
    @staticmethod
1793
2392
    def peer_certificate(session):
1794
 
        "Return the peer's OpenPGP certificate as a bytestring"
1795
 
        # If not an OpenPGP certificate...
1796
 
        if (gnutls.library.functions
1797
 
            .gnutls_certificate_type_get(session._c_object)
1798
 
            != gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1799
 
            # ...do the normal thing
1800
 
            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""
1801
2409
        list_size = ctypes.c_uint(1)
1802
 
        cert_list = (gnutls.library.functions
1803
 
                     .gnutls_certificate_get_peers
 
2410
        cert_list = (gnutls.certificate_get_peers
1804
2411
                     (session._c_object, ctypes.byref(list_size)))
1805
2412
        if not bool(cert_list) and list_size.value != 0:
1806
 
            raise gnutls.errors.GNUTLSError("error getting peer"
1807
 
                                            " certificate")
 
2413
            raise gnutls.Error("error getting peer certificate")
1808
2414
        if list_size.value == 0:
1809
2415
            return None
1810
2416
        cert = cert_list[0]
1811
2417
        return ctypes.string_at(cert.data, cert.size)
1812
 
    
 
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
 
1813
2453
    @staticmethod
1814
2454
    def fingerprint(openpgp):
1815
2455
        "Convert an OpenPGP bytestring to a hexdigit fingerprint"
1816
2456
        # New GnuTLS "datum" with the OpenPGP public key
1817
 
        datum = (gnutls.library.types
1818
 
                 .gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1819
 
                                             ctypes.POINTER
1820
 
                                             (ctypes.c_ubyte)),
1821
 
                                 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)))
1822
2461
        # New empty GnuTLS certificate
1823
 
        crt = gnutls.library.types.gnutls_openpgp_crt_t()
1824
 
        (gnutls.library.functions
1825
 
         .gnutls_openpgp_crt_init(ctypes.byref(crt)))
 
2462
        crt = gnutls.openpgp_crt_t()
 
2463
        gnutls.openpgp_crt_init(ctypes.byref(crt))
1826
2464
        # Import the OpenPGP public key into the certificate
1827
 
        (gnutls.library.functions
1828
 
         .gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1829
 
                                    gnutls.library.constants
1830
 
                                    .GNUTLS_OPENPGP_FMT_RAW))
 
2465
        gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
 
2466
                                  gnutls.OPENPGP_FMT_RAW)
1831
2467
        # Verify the self signature in the key
1832
2468
        crtverify = ctypes.c_uint()
1833
 
        (gnutls.library.functions
1834
 
         .gnutls_openpgp_crt_verify_self(crt, 0,
1835
 
                                         ctypes.byref(crtverify)))
 
2469
        gnutls.openpgp_crt_verify_self(crt, 0,
 
2470
                                       ctypes.byref(crtverify))
1836
2471
        if crtverify.value != 0:
1837
 
            gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1838
 
            raise (gnutls.errors.CertificateSecurityError
1839
 
                   ("Verify failed"))
 
2472
            gnutls.openpgp_crt_deinit(crt)
 
2473
            raise gnutls.CertificateSecurityError(code
 
2474
                                                  =crtverify.value)
1840
2475
        # New buffer for the fingerprint
1841
2476
        buf = ctypes.create_string_buffer(20)
1842
2477
        buf_len = ctypes.c_size_t()
1843
2478
        # Get the fingerprint from the certificate into the buffer
1844
 
        (gnutls.library.functions
1845
 
         .gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1846
 
                                             ctypes.byref(buf_len)))
 
2479
        gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
 
2480
                                           ctypes.byref(buf_len))
1847
2481
        # Deinit the certificate
1848
 
        gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
 
2482
        gnutls.openpgp_crt_deinit(crt)
1849
2483
        # Convert the buffer to a Python bytestring
1850
2484
        fpr = ctypes.string_at(buf, buf_len.value)
1851
2485
        # Convert the bytestring to hexadecimal notation
1855
2489
 
1856
2490
class MultiprocessingMixIn(object):
1857
2491
    """Like socketserver.ThreadingMixIn, but with multiprocessing"""
 
2492
 
1858
2493
    def sub_process_main(self, request, address):
1859
2494
        try:
1860
2495
            self.finish_request(request, address)
1861
2496
        except Exception:
1862
2497
            self.handle_error(request, address)
1863
2498
        self.close_request(request)
1864
 
    
 
2499
 
1865
2500
    def process_request(self, request, address):
1866
2501
        """Start a new process to process the request."""
1867
 
        proc = multiprocessing.Process(target = self.sub_process_main,
1868
 
                                       args = (request, address))
 
2502
        proc = multiprocessing.Process(target=self.sub_process_main,
 
2503
                                       args=(request, address))
1869
2504
        proc.start()
1870
2505
        return proc
1871
2506
 
1872
2507
 
1873
2508
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1874
2509
    """ adds a pipe to the MixIn """
 
2510
 
1875
2511
    def process_request(self, request, client_address):
1876
2512
        """Overrides and wraps the original process_request().
1877
 
        
 
2513
 
1878
2514
        This function creates a new pipe in self.pipe
1879
2515
        """
1880
2516
        parent_pipe, self.child_pipe = multiprocessing.Pipe()
1881
 
        
 
2517
 
1882
2518
        proc = MultiprocessingMixIn.process_request(self, request,
1883
2519
                                                    client_address)
1884
2520
        self.child_pipe.close()
1885
2521
        self.add_pipe(parent_pipe, proc)
1886
 
    
 
2522
 
1887
2523
    def add_pipe(self, parent_pipe, proc):
1888
2524
        """Dummy function; override as necessary"""
1889
 
        raise NotImplementedError
 
2525
        raise NotImplementedError()
1890
2526
 
1891
2527
 
1892
2528
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1893
2529
                     socketserver.TCPServer, object):
1894
2530
    """IPv6-capable TCP server.  Accepts 'None' as address and/or port
1895
 
    
 
2531
 
1896
2532
    Attributes:
1897
2533
        enabled:        Boolean; whether this server is activated yet
1898
2534
        interface:      None or a network interface name (string)
1899
2535
        use_ipv6:       Boolean; to use IPv6 or not
1900
2536
    """
 
2537
 
1901
2538
    def __init__(self, server_address, RequestHandlerClass,
1902
 
                 interface=None, use_ipv6=True, socketfd=None):
 
2539
                 interface=None,
 
2540
                 use_ipv6=True,
 
2541
                 socketfd=None):
1903
2542
        """If socketfd is set, use that file descriptor instead of
1904
2543
        creating a new one with socket.socket().
1905
2544
        """
1911
2550
            self.socketfd = socketfd
1912
2551
            # Save the original socket.socket() function
1913
2552
            self.socket_socket = socket.socket
 
2553
 
1914
2554
            # To implement --socket, we monkey patch socket.socket.
1915
 
            # 
 
2555
            #
1916
2556
            # (When socketserver.TCPServer is a new-style class, we
1917
2557
            # could make self.socket into a property instead of monkey
1918
2558
            # patching socket.socket.)
1919
 
            # 
 
2559
            #
1920
2560
            # Create a one-time-only replacement for socket.socket()
1921
2561
            @functools.wraps(socket.socket)
1922
2562
            def socket_wrapper(*args, **kwargs):
1934
2574
        # socket_wrapper(), if socketfd was set.
1935
2575
        socketserver.TCPServer.__init__(self, server_address,
1936
2576
                                        RequestHandlerClass)
1937
 
    
 
2577
 
1938
2578
    def server_bind(self):
1939
2579
        """This overrides the normal server_bind() function
1940
2580
        to bind to an interface if one was specified, and also NOT to
1941
2581
        bind to an address or port if they were not specified."""
 
2582
        global SO_BINDTODEVICE
1942
2583
        if self.interface is not None:
1943
2584
            if SO_BINDTODEVICE is None:
1944
 
                logger.error("SO_BINDTODEVICE does not exist;"
1945
 
                             " cannot bind to interface %s",
1946
 
                             self.interface)
1947
 
            else:
1948
 
                try:
1949
 
                    self.socket.setsockopt(socket.SOL_SOCKET,
1950
 
                                           SO_BINDTODEVICE,
1951
 
                                           str(self.interface + '\0'))
1952
 
                except socket.error as error:
1953
 
                    if error.errno == errno.EPERM:
1954
 
                        logger.error("No permission to bind to"
1955
 
                                     " interface %s", self.interface)
1956
 
                    elif error.errno == errno.ENOPROTOOPT:
1957
 
                        logger.error("SO_BINDTODEVICE not available;"
1958
 
                                     " cannot bind to interface %s",
1959
 
                                     self.interface)
1960
 
                    elif error.errno == errno.ENODEV:
1961
 
                        logger.error("Interface %s does not exist,"
1962
 
                                     " cannot bind", self.interface)
1963
 
                    else:
1964
 
                        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
1965
2606
        # Only bind(2) the socket if we really need to.
1966
2607
        if self.server_address[0] or self.server_address[1]:
 
2608
            if self.server_address[1]:
 
2609
                self.allow_reuse_address = True
1967
2610
            if not self.server_address[0]:
1968
2611
                if self.address_family == socket.AF_INET6:
1969
 
                    any_address = "::" # in6addr_any
 
2612
                    any_address = "::"  # in6addr_any
1970
2613
                else:
1971
 
                    any_address = socket.INADDR_ANY
 
2614
                    any_address = "0.0.0.0"  # INADDR_ANY
1972
2615
                self.server_address = (any_address,
1973
2616
                                       self.server_address[1])
1974
2617
            elif not self.server_address[1]:
1975
 
                self.server_address = (self.server_address[0],
1976
 
                                       0)
 
2618
                self.server_address = (self.server_address[0], 0)
1977
2619
#                 if self.interface:
1978
2620
#                     self.server_address = (self.server_address[0],
1979
2621
#                                            0, # port
1985
2627
 
1986
2628
class MandosServer(IPv6_TCPServer):
1987
2629
    """Mandos server.
1988
 
    
 
2630
 
1989
2631
    Attributes:
1990
2632
        clients:        set of Client objects
1991
2633
        gnutls_priority GnuTLS priority string
1992
2634
        use_dbus:       Boolean; to emit D-Bus signals or not
1993
 
    
1994
 
    Assumes a gobject.MainLoop event loop.
 
2635
 
 
2636
    Assumes a GLib.MainLoop event loop.
1995
2637
    """
 
2638
 
1996
2639
    def __init__(self, server_address, RequestHandlerClass,
1997
 
                 interface=None, use_ipv6=True, clients=None,
1998
 
                 gnutls_priority=None, use_dbus=True, socketfd=None):
 
2640
                 interface=None,
 
2641
                 use_ipv6=True,
 
2642
                 clients=None,
 
2643
                 gnutls_priority=None,
 
2644
                 use_dbus=True,
 
2645
                 socketfd=None):
1999
2646
        self.enabled = False
2000
2647
        self.clients = clients
2001
2648
        if self.clients is None:
2004
2651
        self.gnutls_priority = gnutls_priority
2005
2652
        IPv6_TCPServer.__init__(self, server_address,
2006
2653
                                RequestHandlerClass,
2007
 
                                interface = interface,
2008
 
                                use_ipv6 = use_ipv6,
2009
 
                                socketfd = socketfd)
 
2654
                                interface=interface,
 
2655
                                use_ipv6=use_ipv6,
 
2656
                                socketfd=socketfd)
 
2657
 
2010
2658
    def server_activate(self):
2011
2659
        if self.enabled:
2012
2660
            return socketserver.TCPServer.server_activate(self)
2013
 
    
 
2661
 
2014
2662
    def enable(self):
2015
2663
        self.enabled = True
2016
 
    
 
2664
 
2017
2665
    def add_pipe(self, parent_pipe, proc):
2018
2666
        # Call "handle_ipc" for both data and EOF events
2019
 
        gobject.io_add_watch(parent_pipe.fileno(),
2020
 
                             gobject.IO_IN | gobject.IO_HUP,
2021
 
                             functools.partial(self.handle_ipc,
2022
 
                                               parent_pipe =
2023
 
                                               parent_pipe,
2024
 
                                               proc = proc))
2025
 
    
2026
 
    def handle_ipc(self, source, condition, parent_pipe=None,
2027
 
                   proc = None, client_object=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,
 
2677
                   client_object=None):
2028
2678
        # error, or the other end of multiprocessing.Pipe has closed
2029
 
        if condition & (gobject.IO_ERR | gobject.IO_HUP):
 
2679
        if condition & (GLib.IO_ERR | GLib.IO_HUP):
2030
2680
            # Wait for other process to exit
2031
2681
            proc.join()
2032
2682
            return False
2033
 
        
 
2683
 
2034
2684
        # Read a request from the child
2035
2685
        request = parent_pipe.recv()
2036
2686
        command = request[0]
2037
 
        
 
2687
 
2038
2688
        if command == 'init':
2039
 
            fpr = request[1]
2040
 
            address = request[2]
2041
 
            
2042
 
            for c in self.clients.itervalues():
2043
 
                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:
2044
2700
                    client = c
2045
2701
                    break
2046
2702
            else:
2047
 
                logger.info("Client not found for fingerprint: %s, ad"
2048
 
                            "dress: %s", fpr, address)
 
2703
                logger.info("Client not found for key ID: %s, address"
 
2704
                            ": %s", key_id or fpr, address)
2049
2705
                if self.use_dbus:
2050
2706
                    # Emit D-Bus signal
2051
 
                    mandos_dbus_service.ClientNotFound(fpr,
 
2707
                    mandos_dbus_service.ClientNotFound(key_id or fpr,
2052
2708
                                                       address[0])
2053
2709
                parent_pipe.send(False)
2054
2710
                return False
2055
 
            
2056
 
            gobject.io_add_watch(parent_pipe.fileno(),
2057
 
                                 gobject.IO_IN | gobject.IO_HUP,
2058
 
                                 functools.partial(self.handle_ipc,
2059
 
                                                   parent_pipe =
2060
 
                                                   parent_pipe,
2061
 
                                                   proc = proc,
2062
 
                                                   client_object =
2063
 
                                                   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))
2064
2719
            parent_pipe.send(True)
2065
2720
            # remove the old hook in favor of the new above hook on
2066
2721
            # same fileno
2069
2724
            funcname = request[1]
2070
2725
            args = request[2]
2071
2726
            kwargs = request[3]
2072
 
            
 
2727
 
2073
2728
            parent_pipe.send(('data', getattr(client_object,
2074
2729
                                              funcname)(*args,
2075
 
                                                         **kwargs)))
2076
 
        
 
2730
                                                        **kwargs)))
 
2731
 
2077
2732
        if command == 'getattr':
2078
2733
            attrname = request[1]
2079
 
            if callable(client_object.__getattribute__(attrname)):
2080
 
                parent_pipe.send(('function',))
 
2734
            if isinstance(client_object.__getattribute__(attrname),
 
2735
                          collections.Callable):
 
2736
                parent_pipe.send(('function', ))
2081
2737
            else:
2082
 
                parent_pipe.send(('data', client_object
2083
 
                                  .__getattribute__(attrname)))
2084
 
        
 
2738
                parent_pipe.send((
 
2739
                    'data', client_object.__getattribute__(attrname)))
 
2740
 
2085
2741
        if command == 'setattr':
2086
2742
            attrname = request[1]
2087
2743
            value = request[2]
2088
2744
            setattr(client_object, attrname, value)
2089
 
        
 
2745
 
2090
2746
        return True
2091
2747
 
2092
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
 
2093
2848
def string_to_delta(interval):
2094
2849
    """Parse a string and return a datetime.timedelta
2095
 
    
 
2850
 
2096
2851
    >>> string_to_delta('7d')
2097
2852
    datetime.timedelta(7)
2098
2853
    >>> string_to_delta('60s')
2106
2861
    >>> string_to_delta('5m 30s')
2107
2862
    datetime.timedelta(0, 330)
2108
2863
    """
 
2864
 
 
2865
    try:
 
2866
        return rfc3339_duration_to_delta(interval)
 
2867
    except ValueError:
 
2868
        pass
 
2869
 
2109
2870
    timevalue = datetime.timedelta(0)
2110
2871
    for s in interval.split():
2111
2872
        try:
2112
 
            suffix = unicode(s[-1])
 
2873
            suffix = s[-1]
2113
2874
            value = int(s[:-1])
2114
2875
            if suffix == "d":
2115
2876
                delta = datetime.timedelta(value)
2122
2883
            elif suffix == "w":
2123
2884
                delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2124
2885
            else:
2125
 
                raise ValueError("Unknown suffix {0!r}"
2126
 
                                 .format(suffix))
2127
 
        except (ValueError, IndexError) as e:
 
2886
                raise ValueError("Unknown suffix {!r}".format(suffix))
 
2887
        except IndexError as e:
2128
2888
            raise ValueError(*(e.args))
2129
2889
        timevalue += delta
2130
2890
    return timevalue
2131
2891
 
2132
2892
 
2133
 
def daemon(nochdir = False, noclose = False):
 
2893
def daemon(nochdir=False, noclose=False):
2134
2894
    """See daemon(3).  Standard BSD Unix function.
2135
 
    
 
2895
 
2136
2896
    This should really exist as os.daemon, but it doesn't (yet)."""
2137
2897
    if os.fork():
2138
2898
        sys.exit()
2146
2906
        null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2147
2907
        if not stat.S_ISCHR(os.fstat(null).st_mode):
2148
2908
            raise OSError(errno.ENODEV,
2149
 
                          "{0} not a character device"
 
2909
                          "{} not a character device"
2150
2910
                          .format(os.devnull))
2151
2911
        os.dup2(null, sys.stdin.fileno())
2152
2912
        os.dup2(null, sys.stdout.fileno())
2156
2916
 
2157
2917
 
2158
2918
def main():
2159
 
    
 
2919
 
2160
2920
    ##################################################################
2161
2921
    # Parsing of options, both command line and config file
2162
 
    
 
2922
 
2163
2923
    parser = argparse.ArgumentParser()
2164
2924
    parser.add_argument("-v", "--version", action="version",
2165
 
                        version = "%(prog)s {0}".format(version),
 
2925
                        version="%(prog)s {}".format(version),
2166
2926
                        help="show version number and exit")
2167
2927
    parser.add_argument("-i", "--interface", metavar="IF",
2168
2928
                        help="Bind to interface IF")
2174
2934
                        help="Run self-test")
2175
2935
    parser.add_argument("--debug", action="store_true",
2176
2936
                        help="Debug mode; run in foreground and log"
2177
 
                        " to terminal")
 
2937
                        " to terminal", default=None)
2178
2938
    parser.add_argument("--debuglevel", metavar="LEVEL",
2179
2939
                        help="Debug level for stdout output")
2180
2940
    parser.add_argument("--priority", help="GnuTLS"
2187
2947
                        " files")
2188
2948
    parser.add_argument("--no-dbus", action="store_false",
2189
2949
                        dest="use_dbus", help="Do not provide D-Bus"
2190
 
                        " system bus interface")
 
2950
                        " system bus interface", default=None)
2191
2951
    parser.add_argument("--no-ipv6", action="store_false",
2192
 
                        dest="use_ipv6", help="Do not use IPv6")
 
2952
                        dest="use_ipv6", help="Do not use IPv6",
 
2953
                        default=None)
2193
2954
    parser.add_argument("--no-restore", action="store_false",
2194
2955
                        dest="restore", help="Do not restore stored"
2195
 
                        " state")
 
2956
                        " state", default=None)
2196
2957
    parser.add_argument("--socket", type=int,
2197
2958
                        help="Specify a file descriptor to a network"
2198
2959
                        " socket to use instead of creating one")
2199
2960
    parser.add_argument("--statedir", metavar="DIR",
2200
2961
                        help="Directory to save/restore state in")
2201
2962
    parser.add_argument("--foreground", action="store_true",
2202
 
                        help="Run in foreground")
2203
 
    
 
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
 
2204
2968
    options = parser.parse_args()
2205
 
    
 
2969
 
2206
2970
    if options.check:
2207
2971
        import doctest
2208
 
        doctest.testmod()
2209
 
        sys.exit()
2210
 
    
 
2972
        fail_count, test_count = doctest.testmod()
 
2973
        sys.exit(os.EX_OK if fail_count == 0 else 1)
 
2974
 
2211
2975
    # Default values for config file for server-global settings
2212
 
    server_defaults = { "interface": "",
2213
 
                        "address": "",
2214
 
                        "port": "",
2215
 
                        "debug": "False",
2216
 
                        "priority":
2217
 
                        "SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2218
 
                        "servicename": "Mandos",
2219
 
                        "use_dbus": "True",
2220
 
                        "use_ipv6": "True",
2221
 
                        "debuglevel": "",
2222
 
                        "restore": "True",
2223
 
                        "socket": "",
2224
 
                        "statedir": "/var/lib/mandos",
2225
 
                        "foreground": "False",
2226
 
                        }
2227
 
    
 
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
 
2228
2999
    # Parse config file for server-global settings
2229
3000
    server_config = configparser.SafeConfigParser(server_defaults)
2230
3001
    del server_defaults
2231
 
    server_config.read(os.path.join(options.configdir,
2232
 
                                    "mandos.conf"))
 
3002
    server_config.read(os.path.join(options.configdir, "mandos.conf"))
2233
3003
    # Convert the SafeConfigParser object to a dict
2234
3004
    server_settings = server_config.defaults()
2235
3005
    # Use the appropriate methods on the non-string config options
2236
 
    for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
 
3006
    for option in ("debug", "use_dbus", "use_ipv6", "restore",
 
3007
                   "foreground", "zeroconf"):
2237
3008
        server_settings[option] = server_config.getboolean("DEFAULT",
2238
3009
                                                           option)
2239
3010
    if server_settings["port"]:
2249
3020
            server_settings["socket"] = os.dup(server_settings
2250
3021
                                               ["socket"])
2251
3022
    del server_config
2252
 
    
 
3023
 
2253
3024
    # Override the settings from the config file with command line
2254
3025
    # options, if set.
2255
3026
    for option in ("interface", "address", "port", "debug",
2256
 
                   "priority", "servicename", "configdir",
2257
 
                   "use_dbus", "use_ipv6", "debuglevel", "restore",
2258
 
                   "statedir", "socket", "foreground"):
 
3027
                   "priority", "servicename", "configdir", "use_dbus",
 
3028
                   "use_ipv6", "debuglevel", "restore", "statedir",
 
3029
                   "socket", "foreground", "zeroconf"):
2259
3030
        value = getattr(options, option)
2260
3031
        if value is not None:
2261
3032
            server_settings[option] = value
2262
3033
    del options
2263
3034
    # Force all strings to be unicode
2264
3035
    for option in server_settings.keys():
2265
 
        if type(server_settings[option]) is str:
2266
 
            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])
2267
3043
    # Debug implies foreground
2268
3044
    if server_settings["debug"]:
2269
3045
        server_settings["foreground"] = True
2270
3046
    # Now we have our good server settings in "server_settings"
2271
 
    
 
3047
 
2272
3048
    ##################################################################
2273
 
    
 
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
 
2274
3055
    # For convenience
2275
3056
    debug = server_settings["debug"]
2276
3057
    debuglevel = server_settings["debuglevel"]
2279
3060
    stored_state_path = os.path.join(server_settings["statedir"],
2280
3061
                                     stored_state_file)
2281
3062
    foreground = server_settings["foreground"]
2282
 
    
 
3063
    zeroconf = server_settings["zeroconf"]
 
3064
 
2283
3065
    if debug:
2284
3066
        initlogger(debug, logging.DEBUG)
2285
3067
    else:
2288
3070
        else:
2289
3071
            level = getattr(logging, debuglevel.upper())
2290
3072
            initlogger(debug, level)
2291
 
    
 
3073
 
2292
3074
    if server_settings["servicename"] != "Mandos":
2293
 
        syslogger.setFormatter(logging.Formatter
2294
 
                               ('Mandos ({0}) [%(process)d]:'
2295
 
                                ' %(levelname)s: %(message)s'
2296
 
                                .format(server_settings
2297
 
                                        ["servicename"])))
2298
 
    
 
3075
        syslogger.setFormatter(
 
3076
            logging.Formatter('Mandos ({}) [%(process)d]:'
 
3077
                              ' %(levelname)s: %(message)s'.format(
 
3078
                                  server_settings["servicename"])))
 
3079
 
2299
3080
    # Parse config file with clients
2300
3081
    client_config = configparser.SafeConfigParser(Client
2301
3082
                                                  .client_defaults)
2302
3083
    client_config.read(os.path.join(server_settings["configdir"],
2303
3084
                                    "clients.conf"))
2304
 
    
 
3085
 
2305
3086
    global mandos_dbus_service
2306
3087
    mandos_dbus_service = None
2307
 
    
2308
 
    tcp_server = MandosServer((server_settings["address"],
2309
 
                               server_settings["port"]),
2310
 
                              ClientHandler,
2311
 
                              interface=(server_settings["interface"]
2312
 
                                         or None),
2313
 
                              use_ipv6=use_ipv6,
2314
 
                              gnutls_priority=
2315
 
                              server_settings["priority"],
2316
 
                              use_dbus=use_dbus,
2317
 
                              socketfd=(server_settings["socket"]
2318
 
                                        or None))
 
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)
2319
3100
    if not foreground:
2320
 
        pidfilename = "/var/run/mandos.pid"
 
3101
        pidfilename = "/run/mandos.pid"
 
3102
        if not os.path.isdir("/run/."):
 
3103
            pidfilename = "/var/run/mandos.pid"
2321
3104
        pidfile = None
2322
3105
        try:
2323
 
            pidfile = open(pidfilename, "w")
 
3106
            pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2324
3107
        except IOError as e:
2325
3108
            logger.error("Could not open file %r", pidfilename,
2326
3109
                         exc_info=e)
2327
 
    
2328
 
    for name in ("_mandos", "mandos", "nobody"):
 
3110
 
 
3111
    for name, group in (("_mandos", "_mandos"),
 
3112
                        ("mandos", "mandos"),
 
3113
                        ("nobody", "nogroup")):
2329
3114
        try:
2330
3115
            uid = pwd.getpwnam(name).pw_uid
2331
 
            gid = pwd.getpwnam(name).pw_gid
 
3116
            gid = pwd.getpwnam(group).pw_gid
2332
3117
            break
2333
3118
        except KeyError:
2334
3119
            continue
2338
3123
    try:
2339
3124
        os.setgid(gid)
2340
3125
        os.setuid(uid)
 
3126
        if debug:
 
3127
            logger.debug("Did setuid/setgid to {}:{}".format(uid,
 
3128
                                                             gid))
2341
3129
    except OSError as error:
 
3130
        logger.warning("Failed to setuid/setgid to {}:{}: {}"
 
3131
                       .format(uid, gid, os.strerror(error.errno)))
2342
3132
        if error.errno != errno.EPERM:
2343
 
            raise error
2344
 
    
 
3133
            raise
 
3134
 
2345
3135
    if debug:
2346
3136
        # Enable all possible GnuTLS debugging
2347
 
        
 
3137
 
2348
3138
        # "Use a log level over 10 to enable all debugging options."
2349
3139
        # - GnuTLS manual
2350
 
        gnutls.library.functions.gnutls_global_set_log_level(11)
2351
 
        
2352
 
        @gnutls.library.types.gnutls_log_func
 
3140
        gnutls.global_set_log_level(11)
 
3141
 
 
3142
        @gnutls.log_func
2353
3143
        def debug_gnutls(level, string):
2354
3144
            logger.debug("GnuTLS: %s", string[:-1])
2355
 
        
2356
 
        (gnutls.library.functions
2357
 
         .gnutls_global_set_log_function(debug_gnutls))
2358
 
        
 
3145
 
 
3146
        gnutls.global_set_log_function(debug_gnutls)
 
3147
 
2359
3148
        # Redirect stdin so all checkers get /dev/null
2360
3149
        null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2361
3150
        os.dup2(null, sys.stdin.fileno())
2362
3151
        if null > 2:
2363
3152
            os.close(null)
2364
 
    
 
3153
 
2365
3154
    # Need to fork before connecting to D-Bus
2366
3155
    if not foreground:
2367
3156
        # Close all input and output, do double fork, etc.
2368
3157
        daemon()
2369
 
    
2370
 
    # multiprocessing will use threads, so before we use gobject we
2371
 
    # need to inform gobject that threads will be used.
2372
 
    gobject.threads_init()
2373
 
    
 
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
 
2374
3163
    global main_loop
2375
3164
    # From the Avahi example code
2376
3165
    DBusGMainLoop(set_as_default=True)
2377
 
    main_loop = gobject.MainLoop()
 
3166
    main_loop = GLib.MainLoop()
2378
3167
    bus = dbus.SystemBus()
2379
3168
    # End of Avahi example code
2380
3169
    if use_dbus:
2381
3170
        try:
2382
3171
            bus_name = dbus.service.BusName("se.recompile.Mandos",
2383
 
                                            bus, do_not_queue=True)
2384
 
            old_bus_name = (dbus.service.BusName
2385
 
                            ("se.bsnet.fukt.Mandos", bus,
2386
 
                             do_not_queue=True))
2387
 
        except dbus.exceptions.NameExistsException as e:
 
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:
2388
3178
            logger.error("Disabling D-Bus:", exc_info=e)
2389
3179
            use_dbus = False
2390
3180
            server_settings["use_dbus"] = False
2391
3181
            tcp_server.use_dbus = False
2392
 
    protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2393
 
    service = AvahiServiceToSyslog(name =
2394
 
                                   server_settings["servicename"],
2395
 
                                   servicetype = "_mandos._tcp",
2396
 
                                   protocol = protocol, bus = bus)
2397
 
    if server_settings["interface"]:
2398
 
        service.interface = (if_nametoindex
2399
 
                             (str(server_settings["interface"])))
2400
 
    
 
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
 
2401
3193
    global multiprocessing_manager
2402
3194
    multiprocessing_manager = multiprocessing.Manager()
2403
 
    
 
3195
 
2404
3196
    client_class = Client
2405
3197
    if use_dbus:
2406
 
        client_class = functools.partial(ClientDBus, bus = bus)
2407
 
    
 
3198
        client_class = functools.partial(ClientDBus, bus=bus)
 
3199
 
2408
3200
    client_settings = Client.config_parser(client_config)
2409
3201
    old_client_settings = {}
2410
3202
    clients_data = {}
2411
 
    
 
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
 
2412
3212
    # Get client data and settings from last running state.
2413
3213
    if server_settings["restore"]:
2414
3214
        try:
2415
3215
            with open(stored_state_path, "rb") as stored_state:
2416
 
                clients_data, old_client_settings = (pickle.load
2417
 
                                                     (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"))
2418
3265
            os.remove(stored_state_path)
2419
3266
        except IOError as e:
2420
3267
            if e.errno == errno.ENOENT:
2421
 
                logger.warning("Could not load persistent state: {0}"
2422
 
                                .format(os.strerror(e.errno)))
 
3268
                logger.warning("Could not load persistent state:"
 
3269
                               " {}".format(os.strerror(e.errno)))
2423
3270
            else:
2424
3271
                logger.critical("Could not load persistent state:",
2425
3272
                                exc_info=e)
2426
3273
                raise
2427
3274
        except EOFError as e:
2428
3275
            logger.warning("Could not load persistent state: "
2429
 
                           "EOFError:", exc_info=e)
2430
 
    
 
3276
                           "EOFError:",
 
3277
                           exc_info=e)
 
3278
 
2431
3279
    with PGPEngine() as pgp:
2432
 
        for client_name, client in clients_data.iteritems():
 
3280
        for client_name, client in clients_data.items():
 
3281
            # Skip removed clients
 
3282
            if client_name not in client_settings:
 
3283
                continue
 
3284
 
2433
3285
            # Decide which value to use after restoring saved state.
2434
3286
            # We have three different values: Old config file,
2435
3287
            # new config file, and saved state.
2440
3292
                    # For each value in new config, check if it
2441
3293
                    # differs from the old config value (Except for
2442
3294
                    # the "secret" attribute)
2443
 
                    if (name != "secret" and
2444
 
                        value != old_client_settings[client_name]
2445
 
                        [name]):
 
3295
                    if (name != "secret"
 
3296
                        and (value !=
 
3297
                             old_client_settings[client_name][name])):
2446
3298
                        client[name] = value
2447
3299
                except KeyError:
2448
3300
                    pass
2449
 
            
 
3301
 
2450
3302
            # Clients who has passed its expire date can still be
2451
 
            # enabled if its last checker was successful.  Clients
 
3303
            # enabled if its last checker was successful.  A Client
2452
3304
            # whose checker succeeded before we stored its state is
2453
3305
            # assumed to have successfully run all checkers during
2454
3306
            # downtime.
2456
3308
                if datetime.datetime.utcnow() >= client["expires"]:
2457
3309
                    if not client["last_checked_ok"]:
2458
3310
                        logger.warning(
2459
 
                            "disabling client {0} - Client never "
2460
 
                            "performed a successful checker"
2461
 
                            .format(client_name))
 
3311
                            "disabling client {} - Client never "
 
3312
                            "performed a successful checker".format(
 
3313
                                client_name))
2462
3314
                        client["enabled"] = False
2463
3315
                    elif client["last_checker_status"] != 0:
2464
3316
                        logger.warning(
2465
 
                            "disabling client {0} - Client "
2466
 
                            "last checker failed with error code {1}"
2467
 
                            .format(client_name,
2468
 
                                    client["last_checker_status"]))
 
3317
                            "disabling client {} - Client last"
 
3318
                            " checker failed with error code"
 
3319
                            " {}".format(
 
3320
                                client_name,
 
3321
                                client["last_checker_status"]))
2469
3322
                        client["enabled"] = False
2470
3323
                    else:
2471
 
                        client["expires"] = (datetime.datetime
2472
 
                                             .utcnow()
2473
 
                                             + client["timeout"])
 
3324
                        client["expires"] = (
 
3325
                            datetime.datetime.utcnow()
 
3326
                            + client["timeout"])
2474
3327
                        logger.debug("Last checker succeeded,"
2475
 
                                     " keeping {0} enabled"
2476
 
                                     .format(client_name))
 
3328
                                     " keeping {} enabled".format(
 
3329
                                         client_name))
2477
3330
            try:
2478
 
                client["secret"] = (
2479
 
                    pgp.decrypt(client["encrypted_secret"],
2480
 
                                client_settings[client_name]
2481
 
                                ["secret"]))
 
3331
                client["secret"] = pgp.decrypt(
 
3332
                    client["encrypted_secret"],
 
3333
                    client_settings[client_name]["secret"])
2482
3334
            except PGPError:
2483
3335
                # If decryption fails, we use secret from new settings
2484
 
                logger.debug("Failed to decrypt {0} old secret"
2485
 
                             .format(client_name))
2486
 
                client["secret"] = (
2487
 
                    client_settings[client_name]["secret"])
2488
 
    
 
3336
                logger.debug("Failed to decrypt {} old secret".format(
 
3337
                    client_name))
 
3338
                client["secret"] = (client_settings[client_name]
 
3339
                                    ["secret"])
 
3340
 
2489
3341
    # Add/remove clients based on new changes made to config
2490
3342
    for client_name in (set(old_client_settings)
2491
3343
                        - set(client_settings)):
2493
3345
    for client_name in (set(client_settings)
2494
3346
                        - set(old_client_settings)):
2495
3347
        clients_data[client_name] = client_settings[client_name]
2496
 
    
 
3348
 
2497
3349
    # Create all client objects
2498
 
    for client_name, client in clients_data.iteritems():
 
3350
    for client_name, client in clients_data.items():
2499
3351
        tcp_server.clients[client_name] = client_class(
2500
 
            name = client_name, settings = client)
2501
 
    
 
3352
            name=client_name,
 
3353
            settings=client,
 
3354
            server_settings=server_settings)
 
3355
 
2502
3356
    if not tcp_server.clients:
2503
3357
        logger.warning("No clients defined")
2504
 
    
 
3358
 
2505
3359
    if not foreground:
2506
3360
        if pidfile is not None:
 
3361
            pid = os.getpid()
2507
3362
            try:
2508
3363
                with pidfile:
2509
 
                    pid = os.getpid()
2510
 
                    pidfile.write(str(pid) + "\n".encode("utf-8"))
 
3364
                    print(pid, file=pidfile)
2511
3365
            except IOError:
2512
3366
                logger.error("Could not write to file %r with PID %d",
2513
3367
                             pidfilename, pid)
2514
3368
        del pidfile
2515
3369
        del pidfilename
2516
 
    
2517
 
    signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2518
 
    signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2519
 
    
 
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
 
2520
3375
    if use_dbus:
2521
 
        @alternate_dbus_interfaces({"se.recompile.Mandos":
2522
 
                                        "se.bsnet.fukt.Mandos"})
2523
 
        class MandosDBusService(DBusObjectWithProperties):
 
3376
 
 
3377
        @alternate_dbus_interfaces(
 
3378
            {"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
 
3379
        class MandosDBusService(DBusObjectWithObjectManager):
2524
3380
            """A D-Bus proxy object"""
 
3381
 
2525
3382
            def __init__(self):
2526
3383
                dbus.service.Object.__init__(self, bus, "/")
 
3384
 
2527
3385
            _interface = "se.recompile.Mandos"
2528
 
            
2529
 
            @dbus_interface_annotations(_interface)
2530
 
            def _foo(self):
2531
 
                return { "org.freedesktop.DBus.Property"
2532
 
                         ".EmitsChangedSignal":
2533
 
                             "false"}
2534
 
            
 
3386
 
2535
3387
            @dbus.service.signal(_interface, signature="o")
2536
3388
            def ClientAdded(self, objpath):
2537
3389
                "D-Bus signal"
2538
3390
                pass
2539
 
            
 
3391
 
2540
3392
            @dbus.service.signal(_interface, signature="ss")
2541
 
            def ClientNotFound(self, fingerprint, address):
 
3393
            def ClientNotFound(self, key_id, address):
2542
3394
                "D-Bus signal"
2543
3395
                pass
2544
 
            
 
3396
 
 
3397
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
 
3398
                               "true"})
2545
3399
            @dbus.service.signal(_interface, signature="os")
2546
3400
            def ClientRemoved(self, objpath, name):
2547
3401
                "D-Bus signal"
2548
3402
                pass
2549
 
            
 
3403
 
 
3404
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
 
3405
                               "true"})
2550
3406
            @dbus.service.method(_interface, out_signature="ao")
2551
3407
            def GetAllClients(self):
2552
3408
                "D-Bus method"
2553
 
                return dbus.Array(c.dbus_object_path
2554
 
                                  for c in
2555
 
                                  tcp_server.clients.itervalues())
2556
 
            
 
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"})
2557
3414
            @dbus.service.method(_interface,
2558
3415
                                 out_signature="a{oa{sv}}")
2559
3416
            def GetAllClientsWithProperties(self):
2560
3417
                "D-Bus method"
2561
3418
                return dbus.Dictionary(
2562
 
                    ((c.dbus_object_path, c.GetAll(""))
2563
 
                     for c in tcp_server.clients.itervalues()),
 
3419
                    {c.dbus_object_path: c.GetAll(
 
3420
                        "se.recompile.Mandos.Client")
 
3421
                     for c in tcp_server.clients.values()},
2564
3422
                    signature="oa{sv}")
2565
 
            
 
3423
 
2566
3424
            @dbus.service.method(_interface, in_signature="o")
2567
3425
            def RemoveClient(self, object_path):
2568
3426
                "D-Bus method"
2569
 
                for c in tcp_server.clients.itervalues():
 
3427
                for c in tcp_server.clients.values():
2570
3428
                    if c.dbus_object_path == object_path:
2571
3429
                        del tcp_server.clients[c.name]
2572
3430
                        c.remove_from_connection()
2573
 
                        # Don't signal anything except ClientRemoved
 
3431
                        # Don't signal the disabling
2574
3432
                        c.disable(quiet=True)
2575
 
                        # Emit D-Bus signal
2576
 
                        self.ClientRemoved(object_path, c.name)
 
3433
                        # Emit D-Bus signal for removal
 
3434
                        self.client_removed_signal(c)
2577
3435
                        return
2578
3436
                raise KeyError(object_path)
2579
 
            
 
3437
 
2580
3438
            del _interface
2581
 
        
 
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
 
2582
3476
        mandos_dbus_service = MandosDBusService()
2583
 
    
 
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
 
2584
3483
    def cleanup():
2585
3484
        "Cleanup function; run on exit"
2586
 
        service.cleanup()
2587
 
        
2588
 
        multiprocessing.active_children()
 
3485
        if zeroconf:
 
3486
            service.cleanup()
 
3487
 
 
3488
        mp.active_children()
 
3489
        wn.close()
2589
3490
        if not (tcp_server.clients or client_settings):
2590
3491
            return
2591
 
        
 
3492
 
2592
3493
        # Store client before exiting. Secrets are encrypted with key
2593
3494
        # based on what config file has. If config file is
2594
3495
        # removed/edited, old secret will thus be unrecovable.
2595
3496
        clients = {}
2596
3497
        with PGPEngine() as pgp:
2597
 
            for client in tcp_server.clients.itervalues():
 
3498
            for client in tcp_server.clients.values():
2598
3499
                key = client_settings[client.name]["secret"]
2599
3500
                client.encrypted_secret = pgp.encrypt(client.secret,
2600
3501
                                                      key)
2601
3502
                client_dict = {}
2602
 
                
 
3503
 
2603
3504
                # A list of attributes that can not be pickled
2604
3505
                # + secret.
2605
 
                exclude = set(("bus", "changedstate", "secret",
2606
 
                               "checker"))
2607
 
                for name, typ in (inspect.getmembers
2608
 
                                  (dbus.service.Object)):
 
3506
                exclude = {"bus", "changedstate", "secret",
 
3507
                           "checker", "server_settings"}
 
3508
                for name, typ in inspect.getmembers(dbus.service
 
3509
                                                    .Object):
2609
3510
                    exclude.add(name)
2610
 
                
 
3511
 
2611
3512
                client_dict["encrypted_secret"] = (client
2612
3513
                                                   .encrypted_secret)
2613
3514
                for attr in client.client_structure:
2614
3515
                    if attr not in exclude:
2615
3516
                        client_dict[attr] = getattr(client, attr)
2616
 
                
 
3517
 
2617
3518
                clients[client.name] = client_dict
2618
3519
                del client_settings[client.name]["secret"]
2619
 
        
 
3520
 
2620
3521
        try:
2621
 
            with (tempfile.NamedTemporaryFile
2622
 
                  (mode='wb', suffix=".pickle", prefix='clients-',
2623
 
                   dir=os.path.dirname(stored_state_path),
2624
 
                   delete=False)) as stored_state:
2625
 
                pickle.dump((clients, client_settings), stored_state)
2626
 
                tempname=stored_state.name
 
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
2627
3531
            os.rename(tempname, stored_state_path)
2628
3532
        except (IOError, OSError) as e:
2629
3533
            if not debug:
2632
3536
                except NameError:
2633
3537
                    pass
2634
3538
            if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2635
 
                logger.warning("Could not save persistent state: {0}"
 
3539
                logger.warning("Could not save persistent state: {}"
2636
3540
                               .format(os.strerror(e.errno)))
2637
3541
            else:
2638
3542
                logger.warning("Could not save persistent state:",
2639
3543
                               exc_info=e)
2640
 
                raise e
2641
 
        
 
3544
                raise
 
3545
 
2642
3546
        # Delete all clients, and settings from config
2643
3547
        while tcp_server.clients:
2644
3548
            name, client = tcp_server.clients.popitem()
2645
3549
            if use_dbus:
2646
3550
                client.remove_from_connection()
2647
 
            # Don't signal anything except ClientRemoved
 
3551
            # Don't signal the disabling
2648
3552
            client.disable(quiet=True)
 
3553
            # Emit D-Bus signal for removal
2649
3554
            if use_dbus:
2650
 
                # Emit D-Bus signal
2651
 
                mandos_dbus_service.ClientRemoved(client
2652
 
                                                  .dbus_object_path,
2653
 
                                                  client.name)
 
3555
                mandos_dbus_service.client_removed_signal(client)
2654
3556
        client_settings.clear()
2655
 
    
 
3557
 
2656
3558
    atexit.register(cleanup)
2657
 
    
2658
 
    for client in tcp_server.clients.itervalues():
 
3559
 
 
3560
    for client in tcp_server.clients.values():
2659
3561
        if use_dbus:
2660
 
            # Emit D-Bus signal
2661
 
            mandos_dbus_service.ClientAdded(client.dbus_object_path)
 
3562
            # Emit D-Bus signal for adding
 
3563
            mandos_dbus_service.client_added_signal(client)
2662
3564
        # Need to initiate checking of clients
2663
3565
        if client.enabled:
2664
3566
            client.init_checker()
2665
 
    
 
3567
 
2666
3568
    tcp_server.enable()
2667
3569
    tcp_server.server_activate()
2668
 
    
 
3570
 
2669
3571
    # Find out what port we got
2670
 
    service.port = tcp_server.socket.getsockname()[1]
 
3572
    if zeroconf:
 
3573
        service.port = tcp_server.socket.getsockname()[1]
2671
3574
    if use_ipv6:
2672
3575
        logger.info("Now listening on address %r, port %d,"
2673
3576
                    " flowinfo %d, scope_id %d",
2675
3578
    else:                       # IPv4
2676
3579
        logger.info("Now listening on address %r, port %d",
2677
3580
                    *tcp_server.socket.getsockname())
2678
 
    
2679
 
    #service.interface = tcp_server.socket.getsockname()[3]
2680
 
    
 
3581
 
 
3582
    # service.interface = tcp_server.socket.getsockname()[3]
 
3583
 
2681
3584
    try:
2682
 
        # From the Avahi example code
2683
 
        try:
2684
 
            service.activate()
2685
 
        except dbus.exceptions.DBusException as error:
2686
 
            logger.critical("D-Bus Exception", exc_info=error)
2687
 
            cleanup()
2688
 
            sys.exit(1)
2689
 
        # End of Avahi example code
2690
 
        
2691
 
        gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2692
 
                             lambda *args, **kwargs:
2693
 
                             (tcp_server.handle_request
2694
 
                              (*args[2:], **kwargs) or True))
2695
 
        
 
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
 
2696
3600
        logger.debug("Starting main loop")
2697
3601
        main_loop.run()
2698
3602
    except AvahiError as error:
2707
3611
    # Must run before the D-Bus bus name gets deregistered
2708
3612
    cleanup()
2709
3613
 
 
3614
 
2710
3615
if __name__ == '__main__':
2711
3616
    main()