/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
 
import SocketServer as socketserver
 
38
try:
 
39
    from future_builtins import *
 
40
except ImportError:
 
41
    pass
 
42
 
 
43
try:
 
44
    import SocketServer as socketserver
 
45
except ImportError:
 
46
    import socketserver
38
47
import socket
39
48
import argparse
40
49
import datetime
41
50
import errno
42
 
import gnutls.crypto
43
 
import gnutls.connection
44
 
import gnutls.errors
45
 
import gnutls.library.functions
46
 
import gnutls.library.constants
47
 
import gnutls.library.types
48
 
import ConfigParser as configparser
 
51
try:
 
52
    import ConfigParser as configparser
 
53
except ImportError:
 
54
    import configparser
49
55
import sys
50
56
import re
51
57
import os
60
66
import struct
61
67
import fcntl
62
68
import functools
63
 
import cPickle as pickle
 
69
try:
 
70
    import cPickle as pickle
 
71
except ImportError:
 
72
    import pickle
64
73
import multiprocessing
65
74
import types
66
75
import binascii
67
76
import tempfile
 
77
import itertools
 
78
import collections
 
79
import codecs
68
80
 
69
81
import dbus
70
82
import dbus.service
71
 
import gobject
72
 
import avahi
 
83
from gi.repository import GLib
73
84
from dbus.mainloop.glib import DBusGMainLoop
74
85
import ctypes
75
86
import ctypes.util
76
87
import xml.dom.minidom
77
88
import inspect
78
 
import GnuPGInterface
79
89
 
 
90
# Try to find the value of SO_BINDTODEVICE:
80
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:
81
94
    SO_BINDTODEVICE = socket.SO_BINDTODEVICE
82
95
except AttributeError:
83
96
    try:
 
97
        # This is where SO_BINDTODEVICE was up to and including Python
 
98
        # 2.6, and also 3.2:
84
99
        from IN import SO_BINDTODEVICE
85
100
    except ImportError:
86
 
        SO_BINDTODEVICE = None
87
 
 
88
 
version = "1.5.1"
 
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"
89
119
stored_state_file = "clients.pickle"
90
120
 
91
121
logger = logging.getLogger()
92
 
syslogger = (logging.handlers.SysLogHandler
93
 
             (facility = logging.handlers.SysLogHandler.LOG_DAEMON,
94
 
              address = str("/dev/log")))
 
122
syslogger = None
95
123
 
96
124
try:
97
 
    if_nametoindex = (ctypes.cdll.LoadLibrary
98
 
                      (ctypes.util.find_library("c"))
99
 
                      .if_nametoindex)
 
125
    if_nametoindex = ctypes.cdll.LoadLibrary(
 
126
        ctypes.util.find_library("c")).if_nametoindex
100
127
except (OSError, AttributeError):
 
128
 
101
129
    def if_nametoindex(interface):
102
130
        "Get an interface index the hard way, i.e. using fcntl()"
103
131
        SIOCGIFINDEX = 0x8933  # From /usr/include/linux/sockios.h
104
132
        with contextlib.closing(socket.socket()) as s:
105
133
            ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
106
 
                                struct.pack(str("16s16x"),
107
 
                                            interface))
108
 
        interface_index = struct.unpack(str("I"),
109
 
                                        ifreq[16:20])[0]
 
134
                                struct.pack(b"16s16x", interface))
 
135
        interface_index = struct.unpack("I", ifreq[16:20])[0]
110
136
        return interface_index
111
137
 
112
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
 
113
155
def initlogger(debug, level=logging.WARNING):
114
156
    """init logger and add loglevel"""
115
 
    
 
157
 
 
158
    global syslogger
 
159
    syslogger = (logging.handlers.SysLogHandler(
 
160
        facility=logging.handlers.SysLogHandler.LOG_DAEMON,
 
161
        address="/dev/log"))
116
162
    syslogger.setFormatter(logging.Formatter
117
163
                           ('Mandos [%(process)d]: %(levelname)s:'
118
164
                            ' %(message)s'))
119
165
    logger.addHandler(syslogger)
120
 
    
 
166
 
121
167
    if debug:
122
168
        console = logging.StreamHandler()
123
169
        console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
135
181
 
136
182
class PGPEngine(object):
137
183
    """A simple class for OpenPGP symmetric encryption & decryption"""
 
184
 
138
185
    def __init__(self):
139
 
        self.gnupg = GnuPGInterface.GnuPG()
140
186
        self.tempdir = tempfile.mkdtemp(prefix="mandos-")
141
 
        self.gnupg = GnuPGInterface.GnuPG()
142
 
        self.gnupg.options.meta_interactive = False
143
 
        self.gnupg.options.homedir = self.tempdir
144
 
        self.gnupg.options.extra_args.extend(['--force-mdc',
145
 
                                              '--quiet',
146
 
                                              '--no-use-agent'])
147
 
    
 
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
 
148
206
    def __enter__(self):
149
207
        return self
150
 
    
151
 
    def __exit__ (self, exc_type, exc_value, traceback):
 
208
 
 
209
    def __exit__(self, exc_type, exc_value, traceback):
152
210
        self._cleanup()
153
211
        return False
154
 
    
 
212
 
155
213
    def __del__(self):
156
214
        self._cleanup()
157
 
    
 
215
 
158
216
    def _cleanup(self):
159
217
        if self.tempdir is not None:
160
218
            # Delete contents of tempdir
161
219
            for root, dirs, files in os.walk(self.tempdir,
162
 
                                             topdown = False):
 
220
                                             topdown=False):
163
221
                for filename in files:
164
222
                    os.remove(os.path.join(root, filename))
165
223
                for dirname in dirs:
167
225
            # Remove tempdir
168
226
            os.rmdir(self.tempdir)
169
227
            self.tempdir = None
170
 
    
 
228
 
171
229
    def password_encode(self, password):
172
230
        # Passphrase can not be empty and can not contain newlines or
173
231
        # NUL bytes.  So we prefix it and hex encode it.
174
 
        return b"mandos" + binascii.hexlify(password)
175
 
    
 
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
 
176
240
    def encrypt(self, data, password):
177
 
        self.gnupg.passphrase = self.password_encode(password)
178
 
        with open(os.devnull) as devnull:
179
 
            try:
180
 
                proc = self.gnupg.run(['--symmetric'],
181
 
                                      create_fhs=['stdin', 'stdout'],
182
 
                                      attach_fhs={'stderr': devnull})
183
 
                with contextlib.closing(proc.handles['stdin']) as f:
184
 
                    f.write(data)
185
 
                with contextlib.closing(proc.handles['stdout']) as f:
186
 
                    ciphertext = f.read()
187
 
                proc.wait()
188
 
            except IOError as e:
189
 
                raise PGPError(e)
190
 
        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)
191
256
        return ciphertext
192
 
    
 
257
 
193
258
    def decrypt(self, data, password):
194
 
        self.gnupg.passphrase = self.password_encode(password)
195
 
        with open(os.devnull) as devnull:
196
 
            try:
197
 
                proc = self.gnupg.run(['--decrypt'],
198
 
                                      create_fhs=['stdin', 'stdout'],
199
 
                                      attach_fhs={'stderr': devnull})
200
 
                with contextlib.closing(proc.handles['stdin'] ) as f:
201
 
                    f.write(data)
202
 
                with contextlib.closing(proc.handles['stdout']) as f:
203
 
                    decrypted_plaintext = f.read()
204
 
                proc.wait()
205
 
            except IOError as e:
206
 
                raise PGPError(e)
207
 
        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)
208
274
        return decrypted_plaintext
209
275
 
210
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
 
211
302
 
212
303
class AvahiError(Exception):
213
304
    def __init__(self, value, *args, **kwargs):
214
305
        self.value = value
215
 
        super(AvahiError, self).__init__(value, *args, **kwargs)
216
 
    def __unicode__(self):
217
 
        return unicode(repr(self.value))
 
306
        return super(AvahiError, self).__init__(value, *args,
 
307
                                                **kwargs)
 
308
 
218
309
 
219
310
class AvahiServiceError(AvahiError):
220
311
    pass
221
312
 
 
313
 
222
314
class AvahiGroupError(AvahiError):
223
315
    pass
224
316
 
225
317
 
226
318
class AvahiService(object):
227
319
    """An Avahi (Zeroconf) service.
228
 
    
 
320
 
229
321
    Attributes:
230
322
    interface: integer; avahi.IF_UNSPEC or an interface index.
231
323
               Used to optionally bind to the specified interface.
232
324
    name: string; Example: 'Mandos'
233
325
    type: string; Example: '_mandos._tcp'.
234
 
                  See <http://www.dns-sd.org/ServiceTypes.html>
 
326
     See <https://www.iana.org/assignments/service-names-port-numbers>
235
327
    port: integer; what port to announce
236
328
    TXT: list of strings; TXT record for the service
237
329
    domain: string; Domain to publish on, default to .local if empty.
243
335
    server: D-Bus Server
244
336
    bus: dbus.SystemBus()
245
337
    """
246
 
    def __init__(self, interface = avahi.IF_UNSPEC, name = None,
247
 
                 servicetype = None, port = None, TXT = None,
248
 
                 domain = "", host = "", max_renames = 32768,
249
 
                 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):
250
350
        self.interface = interface
251
351
        self.name = name
252
352
        self.type = servicetype
261
361
        self.server = None
262
362
        self.bus = bus
263
363
        self.entry_group_state_changed_match = None
264
 
    def rename(self):
 
364
 
 
365
    def rename(self, remove=True):
265
366
        """Derived from the Avahi example code"""
266
367
        if self.rename_count >= self.max_renames:
267
368
            logger.critical("No suitable Zeroconf service name found"
268
369
                            " after %i retries, exiting.",
269
370
                            self.rename_count)
270
371
            raise AvahiServiceError("Too many renames")
271
 
        self.name = unicode(self.server
272
 
                            .GetAlternativeServiceName(self.name))
 
372
        self.name = str(
 
373
            self.server.GetAlternativeServiceName(self.name))
 
374
        self.rename_count += 1
273
375
        logger.info("Changing Zeroconf service name to %r ...",
274
376
                    self.name)
275
 
        self.remove()
 
377
        if remove:
 
378
            self.remove()
276
379
        try:
277
380
            self.add()
278
381
        except dbus.exceptions.DBusException as error:
279
 
            logger.critical("DBusException: %s", error)
280
 
            self.cleanup()
281
 
            os._exit(1)
282
 
        self.rename_count += 1
 
382
            if (error.get_dbus_name()
 
383
                == "org.freedesktop.Avahi.CollisionError"):
 
384
                logger.info("Local Zeroconf service name collision.")
 
385
                return self.rename(remove=False)
 
386
            else:
 
387
                logger.critical("D-Bus Exception", exc_info=error)
 
388
                self.cleanup()
 
389
                os._exit(1)
 
390
 
283
391
    def remove(self):
284
392
        """Derived from the Avahi example code"""
285
393
        if self.entry_group_state_changed_match is not None:
287
395
            self.entry_group_state_changed_match = None
288
396
        if self.group is not None:
289
397
            self.group.Reset()
 
398
 
290
399
    def add(self):
291
400
        """Derived from the Avahi example code"""
292
401
        self.remove()
309
418
            dbus.UInt16(self.port),
310
419
            avahi.string_array_to_txt_array(self.TXT))
311
420
        self.group.Commit()
 
421
 
312
422
    def entry_group_state_changed(self, state, error):
313
423
        """Derived from the Avahi example code"""
314
424
        logger.debug("Avahi entry group state change: %i", state)
315
 
        
 
425
 
316
426
        if state == avahi.ENTRY_GROUP_ESTABLISHED:
317
427
            logger.debug("Zeroconf service established.")
318
428
        elif state == avahi.ENTRY_GROUP_COLLISION:
320
430
            self.rename()
321
431
        elif state == avahi.ENTRY_GROUP_FAILURE:
322
432
            logger.critical("Avahi: Error in group state changed %s",
323
 
                            unicode(error))
324
 
            raise AvahiGroupError("State changed: %s"
325
 
                                  % unicode(error))
 
433
                            str(error))
 
434
            raise AvahiGroupError("State changed: {!s}".format(error))
 
435
 
326
436
    def cleanup(self):
327
437
        """Derived from the Avahi example code"""
328
438
        if self.group is not None:
333
443
                pass
334
444
            self.group = None
335
445
        self.remove()
 
446
 
336
447
    def server_state_changed(self, state, error=None):
337
448
        """Derived from the Avahi example code"""
338
449
        logger.debug("Avahi server state change: %i", state)
339
 
        bad_states = { avahi.SERVER_INVALID:
340
 
                           "Zeroconf server invalid",
341
 
                       avahi.SERVER_REGISTERING: None,
342
 
                       avahi.SERVER_COLLISION:
343
 
                           "Zeroconf server name collision",
344
 
                       avahi.SERVER_FAILURE:
345
 
                           "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
        }
346
456
        if state in bad_states:
347
457
            if bad_states[state] is not None:
348
458
                if error is None:
351
461
                    logger.error(bad_states[state] + ": %r", error)
352
462
            self.cleanup()
353
463
        elif state == avahi.SERVER_RUNNING:
354
 
            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)
355
476
        else:
356
477
            if error is None:
357
478
                logger.debug("Unknown state: %r", state)
358
479
            else:
359
480
                logger.debug("Unknown state: %r: %r", state, error)
 
481
 
360
482
    def activate(self):
361
483
        """Derived from the Avahi example code"""
362
484
        if self.server is None:
366
488
                                    follow_name_owner_changes=True),
367
489
                avahi.DBUS_INTERFACE_SERVER)
368
490
        self.server.connect_to_signal("StateChanged",
369
 
                                 self.server_state_changed)
 
491
                                      self.server_state_changed)
370
492
        self.server_state_changed(self.server.GetState())
371
493
 
 
494
 
372
495
class AvahiServiceToSyslog(AvahiService):
373
 
    def rename(self):
 
496
    def rename(self, *args, **kwargs):
374
497
        """Add the new name to the syslog messages"""
375
 
        ret = AvahiService.rename(self)
376
 
        syslogger.setFormatter(logging.Formatter
377
 
                               ('Mandos (%s) [%%(process)d]:'
378
 
                                ' %%(levelname)s: %%(message)s'
379
 
                                % 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)))
380
502
        return ret
381
503
 
382
 
def timedelta_to_milliseconds(td):
383
 
    "Convert a datetime.timedelta() to milliseconds"
384
 
    return ((td.days * 24 * 60 * 60 * 1000)
385
 
            + (td.seconds * 1000)
386
 
            + (td.microseconds // 1000))
387
 
        
 
504
 
 
505
# Pretend that we have a GnuTLS module
 
506
class gnutls(object):
 
507
    """This isn't so much a class as it is a module-like namespace."""
 
508
 
 
509
    library = ctypes.util.find_library("gnutls")
 
510
    if library is None:
 
511
        library = ctypes.util.find_library("gnutls-deb0")
 
512
    _library = ctypes.cdll.LoadLibrary(library)
 
513
    del library
 
514
 
 
515
    # Unless otherwise indicated, the constants and types below are
 
516
    # all from the gnutls/gnutls.h C header file.
 
517
 
 
518
    # Constants
 
519
    E_SUCCESS = 0
 
520
    E_INTERRUPTED = -52
 
521
    E_AGAIN = -28
 
522
    CRT_OPENPGP = 2
 
523
    CRT_RAWPK = 3
 
524
    CLIENT = 2
 
525
    SHUT_RDWR = 0
 
526
    CRD_CERTIFICATE = 1
 
527
    E_NO_CERTIFICATE_FOUND = -49
 
528
    X509_FMT_DER = 0
 
529
    NO_TICKETS = 1<<10
 
530
    ENABLE_RAWPK = 1<<18
 
531
    CTYPE_PEERS = 3
 
532
    KEYID_USE_SHA256 = 1        # gnutls/x509.h
 
533
    OPENPGP_FMT_RAW = 0         # gnutls/openpgp.h
 
534
 
 
535
    # Types
 
536
    class session_int(ctypes.Structure):
 
537
        _fields_ = []
 
538
    session_t = ctypes.POINTER(session_int)
 
539
 
 
540
    class certificate_credentials_st(ctypes.Structure):
 
541
        _fields_ = []
 
542
    certificate_credentials_t = ctypes.POINTER(
 
543
        certificate_credentials_st)
 
544
    certificate_type_t = ctypes.c_int
 
545
 
 
546
    class datum_t(ctypes.Structure):
 
547
        _fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
 
548
                    ('size', ctypes.c_uint)]
 
549
 
 
550
    class openpgp_crt_int(ctypes.Structure):
 
551
        _fields_ = []
 
552
    openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
 
553
    openpgp_crt_fmt_t = ctypes.c_int  # gnutls/openpgp.h
 
554
    log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
 
555
    credentials_type_t = ctypes.c_int
 
556
    transport_ptr_t = ctypes.c_void_p
 
557
    close_request_t = ctypes.c_int
 
558
 
 
559
    # Exceptions
 
560
    class Error(Exception):
 
561
        def __init__(self, message=None, code=None, args=()):
 
562
            # Default usage is by a message string, but if a return
 
563
            # code is passed, convert it to a string with
 
564
            # gnutls.strerror()
 
565
            self.code = code
 
566
            if message is None and code is not None:
 
567
                message = gnutls.strerror(code)
 
568
            return super(gnutls.Error, self).__init__(
 
569
                message, *args)
 
570
 
 
571
    class CertificateSecurityError(Error):
 
572
        pass
 
573
 
 
574
    # Classes
 
575
    class Credentials(object):
 
576
        def __init__(self):
 
577
            self._c_object = gnutls.certificate_credentials_t()
 
578
            gnutls.certificate_allocate_credentials(
 
579
                ctypes.byref(self._c_object))
 
580
            self.type = gnutls.CRD_CERTIFICATE
 
581
 
 
582
        def __del__(self):
 
583
            gnutls.certificate_free_credentials(self._c_object)
 
584
 
 
585
    class ClientSession(object):
 
586
        def __init__(self, socket, credentials=None):
 
587
            self._c_object = gnutls.session_t()
 
588
            gnutls_flags = gnutls.CLIENT
 
589
            if gnutls.check_version("3.5.6"):
 
590
                gnutls_flags |= gnutls.NO_TICKETS
 
591
            if gnutls.has_rawpk:
 
592
                gnutls_flags |= gnutls.ENABLE_RAWPK
 
593
            gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
 
594
            del gnutls_flags
 
595
            gnutls.set_default_priority(self._c_object)
 
596
            gnutls.transport_set_ptr(self._c_object, socket.fileno())
 
597
            gnutls.handshake_set_private_extensions(self._c_object,
 
598
                                                    True)
 
599
            self.socket = socket
 
600
            if credentials is None:
 
601
                credentials = gnutls.Credentials()
 
602
            gnutls.credentials_set(self._c_object, credentials.type,
 
603
                                   ctypes.cast(credentials._c_object,
 
604
                                               ctypes.c_void_p))
 
605
            self.credentials = credentials
 
606
 
 
607
        def __del__(self):
 
608
            gnutls.deinit(self._c_object)
 
609
 
 
610
        def handshake(self):
 
611
            return gnutls.handshake(self._c_object)
 
612
 
 
613
        def send(self, data):
 
614
            data = bytes(data)
 
615
            data_len = len(data)
 
616
            while data_len > 0:
 
617
                data_len -= gnutls.record_send(self._c_object,
 
618
                                               data[-data_len:],
 
619
                                               data_len)
 
620
 
 
621
        def bye(self):
 
622
            return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
 
623
 
 
624
    # Error handling functions
 
625
    def _error_code(result):
 
626
        """A function to raise exceptions on errors, suitable
 
627
        for the 'restype' attribute on ctypes functions"""
 
628
        if result >= 0:
 
629
            return result
 
630
        if result == gnutls.E_NO_CERTIFICATE_FOUND:
 
631
            raise gnutls.CertificateSecurityError(code=result)
 
632
        raise gnutls.Error(code=result)
 
633
 
 
634
    def _retry_on_error(result, func, arguments):
 
635
        """A function to retry on some errors, suitable
 
636
        for the 'errcheck' attribute on ctypes functions"""
 
637
        while result < 0:
 
638
            if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
 
639
                return _error_code(result)
 
640
            result = func(*arguments)
 
641
        return result
 
642
 
 
643
    # Unless otherwise indicated, the function declarations below are
 
644
    # all from the gnutls/gnutls.h C header file.
 
645
 
 
646
    # Functions
 
647
    priority_set_direct = _library.gnutls_priority_set_direct
 
648
    priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
 
649
                                    ctypes.POINTER(ctypes.c_char_p)]
 
650
    priority_set_direct.restype = _error_code
 
651
 
 
652
    init = _library.gnutls_init
 
653
    init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
 
654
    init.restype = _error_code
 
655
 
 
656
    set_default_priority = _library.gnutls_set_default_priority
 
657
    set_default_priority.argtypes = [session_t]
 
658
    set_default_priority.restype = _error_code
 
659
 
 
660
    record_send = _library.gnutls_record_send
 
661
    record_send.argtypes = [session_t, ctypes.c_void_p,
 
662
                            ctypes.c_size_t]
 
663
    record_send.restype = ctypes.c_ssize_t
 
664
    record_send.errcheck = _retry_on_error
 
665
 
 
666
    certificate_allocate_credentials = (
 
667
        _library.gnutls_certificate_allocate_credentials)
 
668
    certificate_allocate_credentials.argtypes = [
 
669
        ctypes.POINTER(certificate_credentials_t)]
 
670
    certificate_allocate_credentials.restype = _error_code
 
671
 
 
672
    certificate_free_credentials = (
 
673
        _library.gnutls_certificate_free_credentials)
 
674
    certificate_free_credentials.argtypes = [
 
675
        certificate_credentials_t]
 
676
    certificate_free_credentials.restype = None
 
677
 
 
678
    handshake_set_private_extensions = (
 
679
        _library.gnutls_handshake_set_private_extensions)
 
680
    handshake_set_private_extensions.argtypes = [session_t,
 
681
                                                 ctypes.c_int]
 
682
    handshake_set_private_extensions.restype = None
 
683
 
 
684
    credentials_set = _library.gnutls_credentials_set
 
685
    credentials_set.argtypes = [session_t, credentials_type_t,
 
686
                                ctypes.c_void_p]
 
687
    credentials_set.restype = _error_code
 
688
 
 
689
    strerror = _library.gnutls_strerror
 
690
    strerror.argtypes = [ctypes.c_int]
 
691
    strerror.restype = ctypes.c_char_p
 
692
 
 
693
    certificate_type_get = _library.gnutls_certificate_type_get
 
694
    certificate_type_get.argtypes = [session_t]
 
695
    certificate_type_get.restype = _error_code
 
696
 
 
697
    certificate_get_peers = _library.gnutls_certificate_get_peers
 
698
    certificate_get_peers.argtypes = [session_t,
 
699
                                      ctypes.POINTER(ctypes.c_uint)]
 
700
    certificate_get_peers.restype = ctypes.POINTER(datum_t)
 
701
 
 
702
    global_set_log_level = _library.gnutls_global_set_log_level
 
703
    global_set_log_level.argtypes = [ctypes.c_int]
 
704
    global_set_log_level.restype = None
 
705
 
 
706
    global_set_log_function = _library.gnutls_global_set_log_function
 
707
    global_set_log_function.argtypes = [log_func]
 
708
    global_set_log_function.restype = None
 
709
 
 
710
    deinit = _library.gnutls_deinit
 
711
    deinit.argtypes = [session_t]
 
712
    deinit.restype = None
 
713
 
 
714
    handshake = _library.gnutls_handshake
 
715
    handshake.argtypes = [session_t]
 
716
    handshake.restype = _error_code
 
717
    handshake.errcheck = _retry_on_error
 
718
 
 
719
    transport_set_ptr = _library.gnutls_transport_set_ptr
 
720
    transport_set_ptr.argtypes = [session_t, transport_ptr_t]
 
721
    transport_set_ptr.restype = None
 
722
 
 
723
    bye = _library.gnutls_bye
 
724
    bye.argtypes = [session_t, close_request_t]
 
725
    bye.restype = _error_code
 
726
    bye.errcheck = _retry_on_error
 
727
 
 
728
    check_version = _library.gnutls_check_version
 
729
    check_version.argtypes = [ctypes.c_char_p]
 
730
    check_version.restype = ctypes.c_char_p
 
731
 
 
732
    _need_version = b"3.3.0"
 
733
    if check_version(_need_version) is None:
 
734
        raise self.Error("Needs GnuTLS {} or later"
 
735
                         .format(_need_version))
 
736
 
 
737
    _tls_rawpk_version = b"3.6.6"
 
738
    has_rawpk = bool(check_version(_tls_rawpk_version))
 
739
 
 
740
    if has_rawpk:
 
741
        # Types
 
742
        class pubkey_st(ctypes.Structure):
 
743
            _fields = []
 
744
        pubkey_t = ctypes.POINTER(pubkey_st)
 
745
 
 
746
        x509_crt_fmt_t = ctypes.c_int
 
747
 
 
748
        # All the function declarations below are from gnutls/abstract.h
 
749
        pubkey_init = _library.gnutls_pubkey_init
 
750
        pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
 
751
        pubkey_init.restype = _error_code
 
752
 
 
753
        pubkey_import = _library.gnutls_pubkey_import
 
754
        pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
 
755
                                  x509_crt_fmt_t]
 
756
        pubkey_import.restype = _error_code
 
757
 
 
758
        pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
 
759
        pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
 
760
                                      ctypes.POINTER(ctypes.c_ubyte),
 
761
                                      ctypes.POINTER(ctypes.c_size_t)]
 
762
        pubkey_get_key_id.restype = _error_code
 
763
 
 
764
        pubkey_deinit = _library.gnutls_pubkey_deinit
 
765
        pubkey_deinit.argtypes = [pubkey_t]
 
766
        pubkey_deinit.restype = None
 
767
    else:
 
768
        # All the function declarations below are from gnutls/openpgp.h
 
769
 
 
770
        openpgp_crt_init = _library.gnutls_openpgp_crt_init
 
771
        openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
 
772
        openpgp_crt_init.restype = _error_code
 
773
 
 
774
        openpgp_crt_import = _library.gnutls_openpgp_crt_import
 
775
        openpgp_crt_import.argtypes = [openpgp_crt_t,
 
776
                                       ctypes.POINTER(datum_t),
 
777
                                       openpgp_crt_fmt_t]
 
778
        openpgp_crt_import.restype = _error_code
 
779
 
 
780
        openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
 
781
        openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
 
782
                                            ctypes.POINTER(ctypes.c_uint)]
 
783
        openpgp_crt_verify_self.restype = _error_code
 
784
 
 
785
        openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
 
786
        openpgp_crt_deinit.argtypes = [openpgp_crt_t]
 
787
        openpgp_crt_deinit.restype = None
 
788
 
 
789
        openpgp_crt_get_fingerprint = (
 
790
            _library.gnutls_openpgp_crt_get_fingerprint)
 
791
        openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
 
792
                                                ctypes.c_void_p,
 
793
                                                ctypes.POINTER(
 
794
                                                    ctypes.c_size_t)]
 
795
        openpgp_crt_get_fingerprint.restype = _error_code
 
796
 
 
797
    if check_version("3.6.4"):
 
798
        certificate_type_get2 = _library.gnutls_certificate_type_get2
 
799
        certificate_type_get2.argtypes = [session_t, ctypes.c_int]
 
800
        certificate_type_get2.restype = _error_code
 
801
 
 
802
    # Remove non-public functions
 
803
    del _error_code, _retry_on_error
 
804
 
 
805
 
 
806
def call_pipe(connection,       # : multiprocessing.Connection
 
807
              func, *args, **kwargs):
 
808
    """This function is meant to be called by multiprocessing.Process
 
809
 
 
810
    This function runs func(*args, **kwargs), and writes the resulting
 
811
    return value on the provided multiprocessing.Connection.
 
812
    """
 
813
    connection.send(func(*args, **kwargs))
 
814
    connection.close()
 
815
 
 
816
 
388
817
class Client(object):
389
818
    """A representation of a client host served by this server.
390
 
    
 
819
 
391
820
    Attributes:
392
821
    approved:   bool(); 'None' if not yet approved/disapproved
393
822
    approval_delay: datetime.timedelta(); Time to wait for approval
395
824
    checker:    subprocess.Popen(); a running checker process used
396
825
                                    to see if the client lives.
397
826
                                    'None' if no process is running.
398
 
    checker_callback_tag: a gobject event source tag, or None
 
827
    checker_callback_tag: a GLib event source tag, or None
399
828
    checker_command: string; External command which is run to check
400
829
                     if client lives.  %() expansions are done at
401
830
                     runtime with vars(self) as dict, so that for
402
831
                     instance %(name)s can be used in the command.
403
 
    checker_initiator_tag: a gobject event source tag, or None
 
832
    checker_initiator_tag: a GLib event source tag, or None
404
833
    created:    datetime.datetime(); (UTC) object creation
405
834
    client_structure: Object describing what attributes a client has
406
835
                      and is used for storing the client at exit
407
836
    current_checker_command: string; current running checker_command
408
 
    disable_initiator_tag: a gobject event source tag, or None
 
837
    disable_initiator_tag: a GLib event source tag, or None
409
838
    enabled:    bool()
410
839
    fingerprint: string (40 or 32 hexadecimal digits); used to
411
 
                 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
412
843
    host:       string; available for use by the checker command
413
844
    interval:   datetime.timedelta(); How often to start a new checker
414
845
    last_approval_request: datetime.datetime(); (UTC) or None
415
846
    last_checked_ok: datetime.datetime(); (UTC) or None
416
847
    last_checker_status: integer between 0 and 255 reflecting exit
417
848
                         status of last checker. -1 reflects crashed
418
 
                         checker, or None.
 
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
419
852
    last_enabled: datetime.datetime(); (UTC) or None
420
853
    name:       string; from the config file, used in log messages and
421
854
                        D-Bus identifiers
426
859
    runtime_expansions: Allowed attributes for runtime expansion.
427
860
    expires:    datetime.datetime(); time (UTC) when a client will be
428
861
                disabled, or None
 
862
    server_settings: The server_settings dict from main()
429
863
    """
430
 
    
 
864
 
431
865
    runtime_expansions = ("approval_delay", "approval_duration",
432
 
                          "created", "enabled", "fingerprint",
433
 
                          "host", "interval", "last_checked_ok",
 
866
                          "created", "enabled", "expires", "key_id",
 
867
                          "fingerprint", "host", "interval",
 
868
                          "last_approval_request", "last_checked_ok",
434
869
                          "last_enabled", "name", "timeout")
435
 
    client_defaults = { "timeout": "5m",
436
 
                        "extended_timeout": "15m",
437
 
                        "interval": "2m",
438
 
                        "checker": "fping -q -- %%(host)s",
439
 
                        "host": "",
440
 
                        "approval_delay": "0s",
441
 
                        "approval_duration": "1s",
442
 
                        "approved_by_default": "True",
443
 
                        "enabled": "True",
444
 
                        }
445
 
    
446
 
    def timeout_milliseconds(self):
447
 
        "Return the 'timeout' attribute in milliseconds"
448
 
        return timedelta_to_milliseconds(self.timeout)
449
 
    
450
 
    def extended_timeout_milliseconds(self):
451
 
        "Return the 'extended_timeout' attribute in milliseconds"
452
 
        return timedelta_to_milliseconds(self.extended_timeout)
453
 
    
454
 
    def interval_milliseconds(self):
455
 
        "Return the 'interval' attribute in milliseconds"
456
 
        return timedelta_to_milliseconds(self.interval)
457
 
    
458
 
    def approval_delay_milliseconds(self):
459
 
        return timedelta_to_milliseconds(self.approval_delay)
 
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
    }
460
881
 
461
882
    @staticmethod
462
883
    def config_parser(config):
470
891
        for client_name in config.sections():
471
892
            section = dict(config.items(client_name))
472
893
            client = settings[client_name] = {}
473
 
            
 
894
 
474
895
            client["host"] = section["host"]
475
896
            # Reformat values from string types to Python types
476
897
            client["approved_by_default"] = config.getboolean(
477
898
                client_name, "approved_by_default")
478
899
            client["enabled"] = config.getboolean(client_name,
479
900
                                                  "enabled")
480
 
            
 
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(" ", ""))
481
907
            client["fingerprint"] = (section["fingerprint"].upper()
482
908
                                     .replace(" ", ""))
483
909
            if "secret" in section:
484
 
                client["secret"] = section["secret"].decode("base64")
 
910
                client["secret"] = codecs.decode(section["secret"]
 
911
                                                 .encode("utf-8"),
 
912
                                                 "base64")
485
913
            elif "secfile" in section:
486
914
                with open(os.path.expanduser(os.path.expandvars
487
915
                                             (section["secfile"])),
488
916
                          "rb") as secfile:
489
917
                    client["secret"] = secfile.read()
490
918
            else:
491
 
                raise TypeError("No secret or secfile for section %s"
492
 
                                % section)
 
919
                raise TypeError("No secret or secfile for section {}"
 
920
                                .format(section))
493
921
            client["timeout"] = string_to_delta(section["timeout"])
494
922
            client["extended_timeout"] = string_to_delta(
495
923
                section["extended_timeout"])
501
929
            client["checker_command"] = section["checker"]
502
930
            client["last_approval_request"] = None
503
931
            client["last_checked_ok"] = None
504
 
            client["last_checker_status"] = None
505
 
        
 
932
            client["last_checker_status"] = -2
 
933
 
506
934
        return settings
507
 
        
508
 
        
509
 
    def __init__(self, settings, name = None):
510
 
        """Note: the 'checker' key in 'config' sets the
511
 
        'checker_command' attribute and *not* the 'checker'
512
 
        attribute."""
 
935
 
 
936
    def __init__(self, settings, name=None, server_settings=None):
513
937
        self.name = name
 
938
        if server_settings is None:
 
939
            server_settings = {}
 
940
        self.server_settings = server_settings
514
941
        # adding all client settings
515
 
        for setting, value in settings.iteritems():
 
942
        for setting, value in settings.items():
516
943
            setattr(self, setting, value)
517
 
        
 
944
 
518
945
        if self.enabled:
519
946
            if not hasattr(self, "last_enabled"):
520
947
                self.last_enabled = datetime.datetime.utcnow()
524
951
        else:
525
952
            self.last_enabled = None
526
953
            self.expires = None
527
 
       
 
954
 
528
955
        logger.debug("Creating client %r", self.name)
529
 
        # Uppercase and remove spaces from fingerprint for later
530
 
        # comparison purposes with return value from the fingerprint()
531
 
        # function
 
956
        logger.debug("  Key ID: %s", self.key_id)
532
957
        logger.debug("  Fingerprint: %s", self.fingerprint)
533
958
        self.created = settings.get("created",
534
959
                                    datetime.datetime.utcnow())
541
966
        self.current_checker_command = None
542
967
        self.approved = None
543
968
        self.approvals_pending = 0
544
 
        self.changedstate = (multiprocessing_manager
545
 
                             .Condition(multiprocessing_manager
546
 
                                        .Lock()))
547
 
        self.client_structure = [attr for attr in
548
 
                                 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()
549
973
                                 if not attr.startswith("_")]
550
974
        self.client_structure.append("client_structure")
551
 
        
552
 
        for name, t in inspect.getmembers(type(self),
553
 
                                          lambda obj:
554
 
                                              isinstance(obj,
555
 
                                                         property)):
 
975
 
 
976
        for name, t in inspect.getmembers(
 
977
                type(self), lambda obj: isinstance(obj, property)):
556
978
            if not name.startswith("_"):
557
979
                self.client_structure.append(name)
558
 
    
 
980
 
559
981
    # Send notice to process children that client state has changed
560
982
    def send_changedstate(self):
561
983
        with self.changedstate:
562
984
            self.changedstate.notify_all()
563
 
    
 
985
 
564
986
    def enable(self):
565
987
        """Start this client's checker and timeout hooks"""
566
988
        if getattr(self, "enabled", False):
567
989
            # Already enabled
568
990
            return
569
 
        self.send_changedstate()
570
991
        self.expires = datetime.datetime.utcnow() + self.timeout
571
992
        self.enabled = True
572
993
        self.last_enabled = datetime.datetime.utcnow()
573
994
        self.init_checker()
574
 
    
 
995
        self.send_changedstate()
 
996
 
575
997
    def disable(self, quiet=True):
576
998
        """Disable this client."""
577
999
        if not getattr(self, "enabled", False):
578
1000
            return False
579
1001
        if not quiet:
580
 
            self.send_changedstate()
581
 
        if not quiet:
582
1002
            logger.info("Disabling client %s", self.name)
583
 
        if getattr(self, "disable_initiator_tag", False):
584
 
            gobject.source_remove(self.disable_initiator_tag)
 
1003
        if getattr(self, "disable_initiator_tag", None) is not None:
 
1004
            GLib.source_remove(self.disable_initiator_tag)
585
1005
            self.disable_initiator_tag = None
586
1006
        self.expires = None
587
 
        if getattr(self, "checker_initiator_tag", False):
588
 
            gobject.source_remove(self.checker_initiator_tag)
 
1007
        if getattr(self, "checker_initiator_tag", None) is not None:
 
1008
            GLib.source_remove(self.checker_initiator_tag)
589
1009
            self.checker_initiator_tag = None
590
1010
        self.stop_checker()
591
1011
        self.enabled = False
592
 
        # Do not run this again if called by a gobject.timeout_add
 
1012
        if not quiet:
 
1013
            self.send_changedstate()
 
1014
        # Do not run this again if called by a GLib.timeout_add
593
1015
        return False
594
 
    
 
1016
 
595
1017
    def __del__(self):
596
1018
        self.disable()
597
 
    
 
1019
 
598
1020
    def init_checker(self):
599
1021
        # Schedule a new checker to be started an 'interval' from now,
600
1022
        # and every interval from then on.
601
 
        self.checker_initiator_tag = (gobject.timeout_add
602
 
                                      (self.interval_milliseconds(),
603
 
                                       self.start_checker))
 
1023
        if self.checker_initiator_tag is not None:
 
1024
            GLib.source_remove(self.checker_initiator_tag)
 
1025
        self.checker_initiator_tag = GLib.timeout_add(
 
1026
            int(self.interval.total_seconds() * 1000),
 
1027
            self.start_checker)
604
1028
        # Schedule a disable() when 'timeout' has passed
605
 
        self.disable_initiator_tag = (gobject.timeout_add
606
 
                                   (self.timeout_milliseconds(),
607
 
                                    self.disable))
 
1029
        if self.disable_initiator_tag is not None:
 
1030
            GLib.source_remove(self.disable_initiator_tag)
 
1031
        self.disable_initiator_tag = GLib.timeout_add(
 
1032
            int(self.timeout.total_seconds() * 1000), self.disable)
608
1033
        # Also start a new checker *right now*.
609
1034
        self.start_checker()
610
 
    
611
 
    def checker_callback(self, pid, condition, command):
 
1035
 
 
1036
    def checker_callback(self, source, condition, connection,
 
1037
                         command):
612
1038
        """The checker has completed, so take appropriate actions."""
613
1039
        self.checker_callback_tag = None
614
1040
        self.checker = None
615
 
        if os.WIFEXITED(condition):
616
 
            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
617
1048
            if self.last_checker_status == 0:
618
1049
                logger.info("Checker for %(name)s succeeded",
619
1050
                            vars(self))
620
1051
                self.checked_ok()
621
1052
            else:
622
 
                logger.info("Checker for %(name)s failed",
623
 
                            vars(self))
 
1053
                logger.info("Checker for %(name)s failed", vars(self))
624
1054
        else:
625
1055
            self.last_checker_status = -1
 
1056
            self.last_checker_signal = -returncode
626
1057
            logger.warning("Checker for %(name)s crashed?",
627
1058
                           vars(self))
628
 
    
629
 
    def checked_ok(self, timeout=None):
630
 
        """Bump up the timeout for this client.
631
 
        
632
 
        This should only be called when the client has been seen,
633
 
        alive and well.
634
 
        """
 
1059
        return False
 
1060
 
 
1061
    def checked_ok(self):
 
1062
        """Assert that the client has been seen, alive and well."""
 
1063
        self.last_checked_ok = datetime.datetime.utcnow()
 
1064
        self.last_checker_status = 0
 
1065
        self.last_checker_signal = None
 
1066
        self.bump_timeout()
 
1067
 
 
1068
    def bump_timeout(self, timeout=None):
 
1069
        """Bump up the timeout for this client."""
635
1070
        if timeout is None:
636
1071
            timeout = self.timeout
637
 
        self.last_checked_ok = datetime.datetime.utcnow()
638
1072
        if self.disable_initiator_tag is not None:
639
 
            gobject.source_remove(self.disable_initiator_tag)
 
1073
            GLib.source_remove(self.disable_initiator_tag)
 
1074
            self.disable_initiator_tag = None
640
1075
        if getattr(self, "enabled", False):
641
 
            self.disable_initiator_tag = (gobject.timeout_add
642
 
                                          (timedelta_to_milliseconds
643
 
                                           (timeout), self.disable))
 
1076
            self.disable_initiator_tag = GLib.timeout_add(
 
1077
                int(timeout.total_seconds() * 1000), self.disable)
644
1078
            self.expires = datetime.datetime.utcnow() + timeout
645
 
    
 
1079
 
646
1080
    def need_approval(self):
647
1081
        self.last_approval_request = datetime.datetime.utcnow()
648
 
    
 
1082
 
649
1083
    def start_checker(self):
650
1084
        """Start a new checker subprocess if one is not running.
651
 
        
 
1085
 
652
1086
        If a checker already exists, leave it running and do
653
1087
        nothing."""
654
1088
        # The reason for not killing a running checker is that if we
655
 
        # did that, then if a checker (for some reason) started
656
 
        # running slowly and taking more than 'interval' time, the
657
 
        # client would inevitably timeout, since no checker would get
658
 
        # a chance to run to completion.  If we instead leave running
 
1089
        # did that, and if a checker (for some reason) started running
 
1090
        # slowly and taking more than 'interval' time, then the client
 
1091
        # would inevitably timeout, since no checker would get a
 
1092
        # chance to run to completion.  If we instead leave running
659
1093
        # checkers alone, the checker would have to take more time
660
1094
        # than 'timeout' for the client to be disabled, which is as it
661
1095
        # should be.
662
 
        
663
 
        # If a checker exists, make sure it is not a zombie
664
 
        try:
665
 
            pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
666
 
        except (AttributeError, OSError) as error:
667
 
            if (isinstance(error, OSError)
668
 
                and error.errno != errno.ECHILD):
669
 
                raise error
670
 
        else:
671
 
            if pid:
672
 
                logger.warning("Checker was a zombie")
673
 
                gobject.source_remove(self.checker_callback_tag)
674
 
                self.checker_callback(pid, status,
675
 
                                      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
676
1101
        # Start a new checker if needed
677
1102
        if self.checker is None:
 
1103
            # Escape attributes for the shell
 
1104
            escaped_attrs = {
 
1105
                attr: re.escape(str(getattr(self, attr)))
 
1106
                for attr in self.runtime_expansions}
678
1107
            try:
679
 
                # In case checker_command has exactly one % operator
680
 
                command = self.checker_command % self.host
681
 
            except TypeError:
682
 
                # Escape attributes for the shell
683
 
                escaped_attrs = dict(
684
 
                    (attr,
685
 
                     re.escape(unicode(str(getattr(self, attr, "")),
686
 
                                       errors=
687
 
                                       'replace')))
688
 
                    for attr in
689
 
                    self.runtime_expansions)
690
 
                
691
 
                try:
692
 
                    command = self.checker_command % escaped_attrs
693
 
                except TypeError as error:
694
 
                    logger.error('Could not format string "%s":'
695
 
                                 ' %s', self.checker_command, error)
696
 
                    return True # Try again later
 
1108
                command = self.checker_command % escaped_attrs
 
1109
            except TypeError as error:
 
1110
                logger.error('Could not format string "%s"',
 
1111
                             self.checker_command,
 
1112
                             exc_info=error)
 
1113
                return True     # Try again later
697
1114
            self.current_checker_command = command
698
 
            try:
699
 
                logger.info("Starting checker %r for %s",
700
 
                            command, self.name)
701
 
                # We don't need to redirect stdout and stderr, since
702
 
                # in normal mode, that is already done by daemon(),
703
 
                # and in debug mode we don't want to.  (Stdin is
704
 
                # always replaced by /dev/null.)
705
 
                self.checker = subprocess.Popen(command,
706
 
                                                close_fds=True,
707
 
                                                shell=True, cwd="/")
708
 
                self.checker_callback_tag = (gobject.child_watch_add
709
 
                                             (self.checker.pid,
710
 
                                              self.checker_callback,
711
 
                                              data=command))
712
 
                # The checker may have completed before the gobject
713
 
                # watch was added.  Check for this.
714
 
                pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
715
 
                if pid:
716
 
                    gobject.source_remove(self.checker_callback_tag)
717
 
                    self.checker_callback(pid, status, command)
718
 
            except OSError as error:
719
 
                logger.error("Failed to start subprocess: %s",
720
 
                             error)
721
 
        # 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
722
1141
        return True
723
 
    
 
1142
 
724
1143
    def stop_checker(self):
725
1144
        """Force the checker process, if any, to stop."""
726
1145
        if self.checker_callback_tag:
727
 
            gobject.source_remove(self.checker_callback_tag)
 
1146
            GLib.source_remove(self.checker_callback_tag)
728
1147
            self.checker_callback_tag = None
729
1148
        if getattr(self, "checker", None) is None:
730
1149
            return
731
1150
        logger.debug("Stopping checker for %(name)s", vars(self))
732
 
        try:
733
 
            os.kill(self.checker.pid, signal.SIGTERM)
734
 
            #time.sleep(0.5)
735
 
            #if self.checker.poll() is None:
736
 
            #    os.kill(self.checker.pid, signal.SIGKILL)
737
 
        except OSError as error:
738
 
            if error.errno != errno.ESRCH: # No such process
739
 
                raise
 
1151
        self.checker.terminate()
740
1152
        self.checker = None
741
1153
 
742
1154
 
743
 
def dbus_service_property(dbus_interface, signature="v",
744
 
                          access="readwrite", byte_arrays=False):
 
1155
def dbus_service_property(dbus_interface,
 
1156
                          signature="v",
 
1157
                          access="readwrite",
 
1158
                          byte_arrays=False):
745
1159
    """Decorators for marking methods of a DBusObjectWithProperties to
746
1160
    become properties on the D-Bus.
747
 
    
 
1161
 
748
1162
    The decorated method will be called with no arguments by "Get"
749
1163
    and with one argument by "Set".
750
 
    
 
1164
 
751
1165
    The parameters, where they are supported, are the same as
752
1166
    dbus.service.method, except there is only "signature", since the
753
1167
    type from Get() and the type sent to Set() is the same.
756
1170
    # "Set" method, so we fail early here:
757
1171
    if byte_arrays and signature != "ay":
758
1172
        raise ValueError("Byte arrays not supported for non-'ay'"
759
 
                         " signature %r" % signature)
 
1173
                         " signature {!r}".format(signature))
 
1174
 
760
1175
    def decorator(func):
761
1176
        func._dbus_is_property = True
762
1177
        func._dbus_interface = dbus_interface
765
1180
        func._dbus_name = func.__name__
766
1181
        if func._dbus_name.endswith("_dbus_property"):
767
1182
            func._dbus_name = func._dbus_name[:-14]
768
 
        func._dbus_get_args_options = {'byte_arrays': byte_arrays }
769
 
        return func
 
1183
        func._dbus_get_args_options = {'byte_arrays': byte_arrays}
 
1184
        return func
 
1185
 
 
1186
    return decorator
 
1187
 
 
1188
 
 
1189
def dbus_interface_annotations(dbus_interface):
 
1190
    """Decorator for marking functions returning interface annotations
 
1191
 
 
1192
    Usage:
 
1193
 
 
1194
    @dbus_interface_annotations("org.example.Interface")
 
1195
    def _foo(self):  # Function name does not matter
 
1196
        return {"org.freedesktop.DBus.Deprecated": "true",
 
1197
                "org.freedesktop.DBus.Property.EmitsChangedSignal":
 
1198
                    "false"}
 
1199
    """
 
1200
 
 
1201
    def decorator(func):
 
1202
        func._dbus_is_interface = True
 
1203
        func._dbus_interface = dbus_interface
 
1204
        func._dbus_name = dbus_interface
 
1205
        return func
 
1206
 
 
1207
    return decorator
 
1208
 
 
1209
 
 
1210
def dbus_annotations(annotations):
 
1211
    """Decorator to annotate D-Bus methods, signals or properties
 
1212
    Usage:
 
1213
 
 
1214
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
 
1215
                       "org.freedesktop.DBus.Property."
 
1216
                       "EmitsChangedSignal": "false"})
 
1217
    @dbus_service_property("org.example.Interface", signature="b",
 
1218
                           access="r")
 
1219
    def Property_dbus_property(self):
 
1220
        return dbus.Boolean(False)
 
1221
 
 
1222
    See also the DBusObjectWithAnnotations class.
 
1223
    """
 
1224
 
 
1225
    def decorator(func):
 
1226
        func._dbus_annotations = annotations
 
1227
        return func
 
1228
 
770
1229
    return decorator
771
1230
 
772
1231
 
773
1232
class DBusPropertyException(dbus.exceptions.DBusException):
774
1233
    """A base class for D-Bus property-related exceptions
775
1234
    """
776
 
    def __unicode__(self):
777
 
        return unicode(str(self))
 
1235
    pass
778
1236
 
779
1237
 
780
1238
class DBusPropertyAccessException(DBusPropertyException):
789
1247
    pass
790
1248
 
791
1249
 
792
 
class DBusObjectWithProperties(dbus.service.Object):
 
1250
class DBusObjectWithAnnotations(dbus.service.Object):
 
1251
    """A D-Bus object with annotations.
 
1252
 
 
1253
    Classes inheriting from this can use the dbus_annotations
 
1254
    decorator to add annotations to methods or signals.
 
1255
    """
 
1256
 
 
1257
    @staticmethod
 
1258
    def _is_dbus_thing(thing):
 
1259
        """Returns a function testing if an attribute is a D-Bus thing
 
1260
 
 
1261
        If called like _is_dbus_thing("method") it returns a function
 
1262
        suitable for use as predicate to inspect.getmembers().
 
1263
        """
 
1264
        return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
 
1265
                                   False)
 
1266
 
 
1267
    def _get_all_dbus_things(self, thing):
 
1268
        """Returns a generator of (name, attribute) pairs
 
1269
        """
 
1270
        return ((getattr(athing.__get__(self), "_dbus_name", name),
 
1271
                 athing.__get__(self))
 
1272
                for cls in self.__class__.__mro__
 
1273
                for name, athing in
 
1274
                inspect.getmembers(cls, self._is_dbus_thing(thing)))
 
1275
 
 
1276
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
 
1277
                         out_signature="s",
 
1278
                         path_keyword='object_path',
 
1279
                         connection_keyword='connection')
 
1280
    def Introspect(self, object_path, connection):
 
1281
        """Overloading of standard D-Bus method.
 
1282
 
 
1283
        Inserts annotation tags on methods and signals.
 
1284
        """
 
1285
        xmlstring = dbus.service.Object.Introspect(self, object_path,
 
1286
                                                   connection)
 
1287
        try:
 
1288
            document = xml.dom.minidom.parseString(xmlstring)
 
1289
 
 
1290
            for if_tag in document.getElementsByTagName("interface"):
 
1291
                # Add annotation tags
 
1292
                for typ in ("method", "signal"):
 
1293
                    for tag in if_tag.getElementsByTagName(typ):
 
1294
                        annots = dict()
 
1295
                        for name, prop in (self.
 
1296
                                           _get_all_dbus_things(typ)):
 
1297
                            if (name == tag.getAttribute("name")
 
1298
                                and prop._dbus_interface
 
1299
                                == if_tag.getAttribute("name")):
 
1300
                                annots.update(getattr(
 
1301
                                    prop, "_dbus_annotations", {}))
 
1302
                        for name, value in annots.items():
 
1303
                            ann_tag = document.createElement(
 
1304
                                "annotation")
 
1305
                            ann_tag.setAttribute("name", name)
 
1306
                            ann_tag.setAttribute("value", value)
 
1307
                            tag.appendChild(ann_tag)
 
1308
                # Add interface annotation tags
 
1309
                for annotation, value in dict(
 
1310
                    itertools.chain.from_iterable(
 
1311
                        annotations().items()
 
1312
                        for name, annotations
 
1313
                        in self._get_all_dbus_things("interface")
 
1314
                        if name == if_tag.getAttribute("name")
 
1315
                        )).items():
 
1316
                    ann_tag = document.createElement("annotation")
 
1317
                    ann_tag.setAttribute("name", annotation)
 
1318
                    ann_tag.setAttribute("value", value)
 
1319
                    if_tag.appendChild(ann_tag)
 
1320
                # Fix argument name for the Introspect method itself
 
1321
                if (if_tag.getAttribute("name")
 
1322
                    == dbus.INTROSPECTABLE_IFACE):
 
1323
                    for cn in if_tag.getElementsByTagName("method"):
 
1324
                        if cn.getAttribute("name") == "Introspect":
 
1325
                            for arg in cn.getElementsByTagName("arg"):
 
1326
                                if (arg.getAttribute("direction")
 
1327
                                    == "out"):
 
1328
                                    arg.setAttribute("name",
 
1329
                                                     "xml_data")
 
1330
            xmlstring = document.toxml("utf-8")
 
1331
            document.unlink()
 
1332
        except (AttributeError, xml.dom.DOMException,
 
1333
                xml.parsers.expat.ExpatError) as error:
 
1334
            logger.error("Failed to override Introspection method",
 
1335
                         exc_info=error)
 
1336
        return xmlstring
 
1337
 
 
1338
 
 
1339
class DBusObjectWithProperties(DBusObjectWithAnnotations):
793
1340
    """A D-Bus object with properties.
794
 
    
 
1341
 
795
1342
    Classes inheriting from this can use the dbus_service_property
796
1343
    decorator to expose methods as D-Bus properties.  It exposes the
797
1344
    standard Get(), Set(), and GetAll() methods on the D-Bus.
798
1345
    """
799
 
    
800
 
    @staticmethod
801
 
    def _is_dbus_property(obj):
802
 
        return getattr(obj, "_dbus_is_property", False)
803
 
    
804
 
    def _get_all_dbus_properties(self):
805
 
        """Returns a generator of (name, attribute) pairs
806
 
        """
807
 
        return ((prop.__get__(self)._dbus_name, prop.__get__(self))
808
 
                for cls in self.__class__.__mro__
809
 
                for name, prop in
810
 
                inspect.getmembers(cls, self._is_dbus_property))
811
 
    
 
1346
 
812
1347
    def _get_dbus_property(self, interface_name, property_name):
813
1348
        """Returns a bound method if one exists which is a D-Bus
814
1349
        property with the specified name and interface.
815
1350
        """
816
 
        for cls in  self.__class__.__mro__:
817
 
            for name, value in (inspect.getmembers
818
 
                                (cls, self._is_dbus_property)):
 
1351
        for cls in self.__class__.__mro__:
 
1352
            for name, value in inspect.getmembers(
 
1353
                    cls, self._is_dbus_thing("property")):
819
1354
                if (value._dbus_name == property_name
820
1355
                    and value._dbus_interface == interface_name):
821
1356
                    return value.__get__(self)
822
 
        
 
1357
 
823
1358
        # No such property
824
 
        raise DBusPropertyNotFound(self.dbus_object_path + ":"
825
 
                                   + interface_name + "."
826
 
                                   + property_name)
827
 
    
828
 
    @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",
829
1373
                         out_signature="v")
830
1374
    def Get(self, interface_name, property_name):
831
1375
        """Standard D-Bus property Get() method, see D-Bus standard.
837
1381
        if not hasattr(value, "variant_level"):
838
1382
            return value
839
1383
        return type(value)(value, variant_level=value.variant_level+1)
840
 
    
 
1384
 
841
1385
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
842
1386
    def Set(self, interface_name, property_name, value):
843
1387
        """Standard D-Bus property Set() method, see D-Bus standard.
849
1393
            # The byte_arrays option is not supported yet on
850
1394
            # signatures other than "ay".
851
1395
            if prop._dbus_signature != "ay":
852
 
                raise ValueError
 
1396
                raise ValueError("Byte arrays not supported for non-"
 
1397
                                 "'ay' signature {!r}"
 
1398
                                 .format(prop._dbus_signature))
853
1399
            value = dbus.ByteArray(b''.join(chr(byte)
854
1400
                                            for byte in value))
855
1401
        prop(value)
856
 
    
857
 
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
 
1402
 
 
1403
    @dbus.service.method(dbus.PROPERTIES_IFACE,
 
1404
                         in_signature="s",
858
1405
                         out_signature="a{sv}")
859
1406
    def GetAll(self, interface_name):
860
1407
        """Standard D-Bus property GetAll() method, see D-Bus
861
1408
        standard.
862
 
        
 
1409
 
863
1410
        Note: Will not include properties with access="write".
864
1411
        """
865
1412
        properties = {}
866
 
        for name, prop in self._get_all_dbus_properties():
 
1413
        for name, prop in self._get_all_dbus_things("property"):
867
1414
            if (interface_name
868
1415
                and interface_name != prop._dbus_interface):
869
1416
                # Interface non-empty but did not match
875
1422
            if not hasattr(value, "variant_level"):
876
1423
                properties[name] = value
877
1424
                continue
878
 
            properties[name] = type(value)(value, variant_level=
879
 
                                           value.variant_level+1)
 
1425
            properties[name] = type(value)(
 
1426
                value, variant_level=value.variant_level + 1)
880
1427
        return dbus.Dictionary(properties, signature="sv")
881
 
    
 
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
 
882
1437
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
883
1438
                         out_signature="s",
884
1439
                         path_keyword='object_path',
885
1440
                         connection_keyword='connection')
886
1441
    def Introspect(self, object_path, connection):
887
 
        """Standard D-Bus method, overloaded to insert property tags.
 
1442
        """Overloading of standard D-Bus method.
 
1443
 
 
1444
        Inserts property tags and interface annotation tags.
888
1445
        """
889
 
        xmlstring = dbus.service.Object.Introspect(self, object_path,
890
 
                                                   connection)
 
1446
        xmlstring = DBusObjectWithAnnotations.Introspect(self,
 
1447
                                                         object_path,
 
1448
                                                         connection)
891
1449
        try:
892
1450
            document = xml.dom.minidom.parseString(xmlstring)
 
1451
 
893
1452
            def make_tag(document, name, prop):
894
1453
                e = document.createElement("property")
895
1454
                e.setAttribute("name", name)
896
1455
                e.setAttribute("type", prop._dbus_signature)
897
1456
                e.setAttribute("access", prop._dbus_access)
898
1457
                return e
 
1458
 
899
1459
            for if_tag in document.getElementsByTagName("interface"):
 
1460
                # Add property tags
900
1461
                for tag in (make_tag(document, name, prop)
901
1462
                            for name, prop
902
 
                            in self._get_all_dbus_properties()
 
1463
                            in self._get_all_dbus_things("property")
903
1464
                            if prop._dbus_interface
904
1465
                            == if_tag.getAttribute("name")):
905
1466
                    if_tag.appendChild(tag)
 
1467
                # Add annotation tags for properties
 
1468
                for tag in if_tag.getElementsByTagName("property"):
 
1469
                    annots = dict()
 
1470
                    for name, prop in self._get_all_dbus_things(
 
1471
                            "property"):
 
1472
                        if (name == tag.getAttribute("name")
 
1473
                            and prop._dbus_interface
 
1474
                            == if_tag.getAttribute("name")):
 
1475
                            annots.update(getattr(
 
1476
                                prop, "_dbus_annotations", {}))
 
1477
                    for name, value in annots.items():
 
1478
                        ann_tag = document.createElement(
 
1479
                            "annotation")
 
1480
                        ann_tag.setAttribute("name", name)
 
1481
                        ann_tag.setAttribute("value", value)
 
1482
                        tag.appendChild(ann_tag)
906
1483
                # Add the names to the return values for the
907
1484
                # "org.freedesktop.DBus.Properties" methods
908
1485
                if (if_tag.getAttribute("name")
923
1500
        except (AttributeError, xml.dom.DOMException,
924
1501
                xml.parsers.expat.ExpatError) as error:
925
1502
            logger.error("Failed to override Introspection method",
926
 
                         error)
927
 
        return xmlstring
928
 
 
929
 
 
930
 
def datetime_to_dbus (dt, variant_level=0):
 
1503
                         exc_info=error)
 
1504
        return xmlstring
 
1505
 
 
1506
 
 
1507
try:
 
1508
    dbus.OBJECT_MANAGER_IFACE
 
1509
except AttributeError:
 
1510
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
 
1511
 
 
1512
 
 
1513
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
 
1514
    """A D-Bus object with an ObjectManager.
 
1515
 
 
1516
    Classes inheriting from this exposes the standard
 
1517
    GetManagedObjects call and the InterfacesAdded and
 
1518
    InterfacesRemoved signals on the standard
 
1519
    "org.freedesktop.DBus.ObjectManager" interface.
 
1520
 
 
1521
    Note: No signals are sent automatically; they must be sent
 
1522
    manually.
 
1523
    """
 
1524
    @dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
 
1525
                         out_signature="a{oa{sa{sv}}}")
 
1526
    def GetManagedObjects(self):
 
1527
        """This function must be overridden"""
 
1528
        raise NotImplementedError()
 
1529
 
 
1530
    @dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
 
1531
                         signature="oa{sa{sv}}")
 
1532
    def InterfacesAdded(self, object_path, interfaces_and_properties):
 
1533
        pass
 
1534
 
 
1535
    @dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
 
1536
    def InterfacesRemoved(self, object_path, interfaces):
 
1537
        pass
 
1538
 
 
1539
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
 
1540
                         out_signature="s",
 
1541
                         path_keyword='object_path',
 
1542
                         connection_keyword='connection')
 
1543
    def Introspect(self, object_path, connection):
 
1544
        """Overloading of standard D-Bus method.
 
1545
 
 
1546
        Override return argument name of GetManagedObjects to be
 
1547
        "objpath_interfaces_and_properties"
 
1548
        """
 
1549
        xmlstring = DBusObjectWithAnnotations.Introspect(self,
 
1550
                                                         object_path,
 
1551
                                                         connection)
 
1552
        try:
 
1553
            document = xml.dom.minidom.parseString(xmlstring)
 
1554
 
 
1555
            for if_tag in document.getElementsByTagName("interface"):
 
1556
                # Fix argument name for the GetManagedObjects method
 
1557
                if (if_tag.getAttribute("name")
 
1558
                    == dbus.OBJECT_MANAGER_IFACE):
 
1559
                    for cn in if_tag.getElementsByTagName("method"):
 
1560
                        if (cn.getAttribute("name")
 
1561
                            == "GetManagedObjects"):
 
1562
                            for arg in cn.getElementsByTagName("arg"):
 
1563
                                if (arg.getAttribute("direction")
 
1564
                                    == "out"):
 
1565
                                    arg.setAttribute(
 
1566
                                        "name",
 
1567
                                        "objpath_interfaces"
 
1568
                                        "_and_properties")
 
1569
            xmlstring = document.toxml("utf-8")
 
1570
            document.unlink()
 
1571
        except (AttributeError, xml.dom.DOMException,
 
1572
                xml.parsers.expat.ExpatError) as error:
 
1573
            logger.error("Failed to override Introspection method",
 
1574
                         exc_info=error)
 
1575
        return xmlstring
 
1576
 
 
1577
 
 
1578
def datetime_to_dbus(dt, variant_level=0):
931
1579
    """Convert a UTC datetime.datetime() to a D-Bus type."""
932
1580
    if dt is None:
933
 
        return dbus.String("", variant_level = variant_level)
934
 
    return dbus.String(dt.isoformat(),
935
 
                       variant_level=variant_level)
936
 
 
937
 
 
938
 
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
939
 
                                  .__metaclass__):
940
 
    """Applied to an empty subclass of a D-Bus object, this metaclass
941
 
    will add additional D-Bus attributes matching a certain pattern.
 
1581
        return dbus.String("", variant_level=variant_level)
 
1582
    return dbus.String(dt.isoformat(), variant_level=variant_level)
 
1583
 
 
1584
 
 
1585
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
 
1586
    """A class decorator; applied to a subclass of
 
1587
    dbus.service.Object, it will add alternate D-Bus attributes with
 
1588
    interface names according to the "alt_interface_names" mapping.
 
1589
    Usage:
 
1590
 
 
1591
    @alternate_dbus_interfaces({"org.example.Interface":
 
1592
                                    "net.example.AlternateInterface"})
 
1593
    class SampleDBusObject(dbus.service.Object):
 
1594
        @dbus.service.method("org.example.Interface")
 
1595
        def SampleDBusMethod():
 
1596
            pass
 
1597
 
 
1598
    The above "SampleDBusMethod" on "SampleDBusObject" will be
 
1599
    reachable via two interfaces: "org.example.Interface" and
 
1600
    "net.example.AlternateInterface", the latter of which will have
 
1601
    its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
 
1602
    "true", unless "deprecate" is passed with a False value.
 
1603
 
 
1604
    This works for methods and signals, and also for D-Bus properties
 
1605
    (from DBusObjectWithProperties) and interfaces (from the
 
1606
    dbus_interface_annotations decorator).
942
1607
    """
943
 
    def __new__(mcs, name, bases, attr):
944
 
        # Go through all the base classes which could have D-Bus
945
 
        # methods, signals, or properties in them
946
 
        for base in (b for b in bases
947
 
                     if issubclass(b, dbus.service.Object)):
948
 
            # Go though all attributes of the base class
949
 
            for attrname, attribute in inspect.getmembers(base):
 
1608
 
 
1609
    def wrapper(cls):
 
1610
        for orig_interface_name, alt_interface_name in (
 
1611
                alt_interface_names.items()):
 
1612
            attr = {}
 
1613
            interface_names = set()
 
1614
            # Go though all attributes of the class
 
1615
            for attrname, attribute in inspect.getmembers(cls):
950
1616
                # Ignore non-D-Bus attributes, and D-Bus attributes
951
1617
                # with the wrong interface name
952
1618
                if (not hasattr(attribute, "_dbus_interface")
953
 
                    or not attribute._dbus_interface
954
 
                    .startswith("se.recompile.Mandos")):
 
1619
                    or not attribute._dbus_interface.startswith(
 
1620
                        orig_interface_name)):
955
1621
                    continue
956
1622
                # Create an alternate D-Bus interface name based on
957
1623
                # the current name
958
 
                alt_interface = (attribute._dbus_interface
959
 
                                 .replace("se.recompile.Mandos",
960
 
                                          "se.bsnet.fukt.Mandos"))
 
1624
                alt_interface = attribute._dbus_interface.replace(
 
1625
                    orig_interface_name, alt_interface_name)
 
1626
                interface_names.add(alt_interface)
961
1627
                # Is this a D-Bus signal?
962
1628
                if getattr(attribute, "_dbus_is_signal", False):
963
 
                    # Extract the original non-method function by
964
 
                    # black magic
965
 
                    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(
966
1633
                            zip(attribute.func_code.co_freevars,
967
 
                                attribute.__closure__))["func"]
968
 
                                      .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)
969
1641
                    # Create a new, but exactly alike, function
970
1642
                    # object, and decorate it to be a new D-Bus signal
971
1643
                    # with the alternate D-Bus interface name
972
 
                    new_function = (dbus.service.signal
973
 
                                    (alt_interface,
974
 
                                     attribute._dbus_signature)
975
 
                                    (types.FunctionType(
976
 
                                nonmethod_func.func_code,
977
 
                                nonmethod_func.func_globals,
978
 
                                nonmethod_func.func_name,
979
 
                                nonmethod_func.func_defaults,
980
 
                                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))
 
1648
                    # Copy annotations, if any
 
1649
                    try:
 
1650
                        new_function._dbus_annotations = dict(
 
1651
                            attribute._dbus_annotations)
 
1652
                    except AttributeError:
 
1653
                        pass
 
1654
 
981
1655
                    # Define a creator of a function to call both the
982
 
                    # old and new functions, so both the old and new
983
 
                    # signals gets sent when the function is called
 
1656
                    # original and alternate functions, so both the
 
1657
                    # original and alternate signals gets sent when
 
1658
                    # the function is called
984
1659
                    def fixscope(func1, func2):
985
1660
                        """This function is a scope container to pass
986
1661
                        func1 and func2 to the "call_both" function
987
1662
                        outside of its arguments"""
 
1663
 
 
1664
                        @functools.wraps(func2)
988
1665
                        def call_both(*args, **kwargs):
989
1666
                            """This function will emit two D-Bus
990
1667
                            signals by calling func1 and func2"""
991
1668
                            func1(*args, **kwargs)
992
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
 
993
1676
                        return call_both
994
1677
                    # Create the "call_both" function and add it to
995
1678
                    # the class
996
 
                    attr[attrname] = fixscope(attribute,
997
 
                                              new_function)
 
1679
                    attr[attrname] = fixscope(attribute, new_function)
998
1680
                # Is this a D-Bus method?
999
1681
                elif getattr(attribute, "_dbus_is_method", False):
1000
1682
                    # Create a new, but exactly alike, function
1001
1683
                    # object.  Decorate it to be a new D-Bus method
1002
1684
                    # with the alternate D-Bus interface name.  Add it
1003
1685
                    # to the class.
1004
 
                    attr[attrname] = (dbus.service.method
1005
 
                                      (alt_interface,
1006
 
                                       attribute._dbus_in_signature,
1007
 
                                       attribute._dbus_out_signature)
1008
 
                                      (types.FunctionType
1009
 
                                       (attribute.func_code,
1010
 
                                        attribute.func_globals,
1011
 
                                        attribute.func_name,
1012
 
                                        attribute.func_defaults,
1013
 
                                        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)))
 
1692
                    # Copy annotations, if any
 
1693
                    try:
 
1694
                        attr[attrname]._dbus_annotations = dict(
 
1695
                            attribute._dbus_annotations)
 
1696
                    except AttributeError:
 
1697
                        pass
1014
1698
                # Is this a D-Bus property?
1015
1699
                elif getattr(attribute, "_dbus_is_property", False):
1016
1700
                    # Create a new, but exactly alike, function
1017
1701
                    # object, and decorate it to be a new D-Bus
1018
1702
                    # property with the alternate D-Bus interface
1019
1703
                    # name.  Add it to the class.
1020
 
                    attr[attrname] = (dbus_service_property
1021
 
                                      (alt_interface,
1022
 
                                       attribute._dbus_signature,
1023
 
                                       attribute._dbus_access,
1024
 
                                       attribute
1025
 
                                       ._dbus_get_args_options
1026
 
                                       ["byte_arrays"])
1027
 
                                      (types.FunctionType
1028
 
                                       (attribute.func_code,
1029
 
                                        attribute.func_globals,
1030
 
                                        attribute.func_name,
1031
 
                                        attribute.func_defaults,
1032
 
                                        attribute.func_closure)))
1033
 
        return type.__new__(mcs, name, bases, attr)
1034
 
 
1035
 
 
 
1704
                    attr[attrname] = (dbus_service_property(
 
1705
                        alt_interface, attribute._dbus_signature,
 
1706
                        attribute._dbus_access,
 
1707
                        attribute._dbus_get_args_options
 
1708
                        ["byte_arrays"])
 
1709
                                      (copy_function(attribute)))
 
1710
                    # Copy annotations, if any
 
1711
                    try:
 
1712
                        attr[attrname]._dbus_annotations = dict(
 
1713
                            attribute._dbus_annotations)
 
1714
                    except AttributeError:
 
1715
                        pass
 
1716
                # Is this a D-Bus interface?
 
1717
                elif getattr(attribute, "_dbus_is_interface", False):
 
1718
                    # Create a new, but exactly alike, function
 
1719
                    # object.  Decorate it to be a new D-Bus interface
 
1720
                    # with the alternate D-Bus interface name.  Add it
 
1721
                    # to the class.
 
1722
                    attr[attrname] = (
 
1723
                        dbus_interface_annotations(alt_interface)
 
1724
                        (copy_function(attribute)))
 
1725
            if deprecate:
 
1726
                # Deprecate all alternate interfaces
 
1727
                iname = "_AlternateDBusNames_interface_annotation{}"
 
1728
                for interface_name in interface_names:
 
1729
 
 
1730
                    @dbus_interface_annotations(interface_name)
 
1731
                    def func(self):
 
1732
                        return {"org.freedesktop.DBus.Deprecated":
 
1733
                                "true"}
 
1734
                    # Find an unused name
 
1735
                    for aname in (iname.format(i)
 
1736
                                  for i in itertools.count()):
 
1737
                        if aname not in attr:
 
1738
                            attr[aname] = func
 
1739
                            break
 
1740
            if interface_names:
 
1741
                # Replace the class with a new subclass of it with
 
1742
                # methods, signals, etc. as created above.
 
1743
                if sys.version_info.major == 2:
 
1744
                    cls = type(b"{}Alternate".format(cls.__name__),
 
1745
                               (cls, ), attr)
 
1746
                else:
 
1747
                    cls = type("{}Alternate".format(cls.__name__),
 
1748
                               (cls, ), attr)
 
1749
        return cls
 
1750
 
 
1751
    return wrapper
 
1752
 
 
1753
 
 
1754
@alternate_dbus_interfaces({"se.recompile.Mandos":
 
1755
                            "se.bsnet.fukt.Mandos"})
1036
1756
class ClientDBus(Client, DBusObjectWithProperties):
1037
1757
    """A Client class using D-Bus
1038
 
    
 
1758
 
1039
1759
    Attributes:
1040
1760
    dbus_object_path: dbus.ObjectPath
1041
1761
    bus: dbus.SystemBus()
1042
1762
    """
1043
 
    
 
1763
 
1044
1764
    runtime_expansions = (Client.runtime_expansions
1045
 
                          + ("dbus_object_path",))
1046
 
    
 
1765
                          + ("dbus_object_path", ))
 
1766
 
 
1767
    _interface = "se.recompile.Mandos.Client"
 
1768
 
1047
1769
    # dbus.service.Object doesn't use super(), so we can't either.
1048
 
    
1049
 
    def __init__(self, bus = None, *args, **kwargs):
 
1770
 
 
1771
    def __init__(self, bus=None, *args, **kwargs):
1050
1772
        self.bus = bus
1051
1773
        Client.__init__(self, *args, **kwargs)
1052
1774
        # Only now, when this client is initialized, can it show up on
1053
1775
        # the D-Bus
1054
 
        client_object_name = unicode(self.name).translate(
 
1776
        client_object_name = str(self.name).translate(
1055
1777
            {ord("."): ord("_"),
1056
1778
             ord("-"): ord("_")})
1057
 
        self.dbus_object_path = (dbus.ObjectPath
1058
 
                                 ("/clients/" + client_object_name))
 
1779
        self.dbus_object_path = dbus.ObjectPath(
 
1780
            "/clients/" + client_object_name)
1059
1781
        DBusObjectWithProperties.__init__(self, self.bus,
1060
1782
                                          self.dbus_object_path)
1061
 
        
1062
 
    def notifychangeproperty(transform_func,
1063
 
                             dbus_name, type_func=lambda x: x,
1064
 
                             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):
1065
1789
        """ Modify a variable so that it's a property which announces
1066
1790
        its changes to DBus.
1067
 
        
 
1791
 
1068
1792
        transform_fun: Function that takes a value and a variant_level
1069
1793
                       and transforms it to a D-Bus type.
1070
1794
        dbus_name: D-Bus name of the variable
1072
1796
                   to the D-Bus.  Default: no transform
1073
1797
        variant_level: D-Bus variant level.  Default: 1
1074
1798
        """
1075
 
        attrname = "_{0}".format(dbus_name)
 
1799
        attrname = "_{}".format(dbus_name)
 
1800
 
1076
1801
        def setter(self, value):
1077
1802
            if hasattr(self, "dbus_object_path"):
1078
1803
                if (not hasattr(self, attrname) or
1079
1804
                    type_func(getattr(self, attrname, None))
1080
1805
                    != type_func(value)):
1081
 
                    dbus_value = transform_func(type_func(value),
1082
 
                                                variant_level
1083
 
                                                =variant_level)
1084
 
                    self.PropertyChanged(dbus.String(dbus_name),
1085
 
                                         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())
1086
1821
            setattr(self, attrname, value)
1087
 
        
 
1822
 
1088
1823
        return property(lambda self: getattr(self, attrname), setter)
1089
 
    
1090
 
    
 
1824
 
1091
1825
    expires = notifychangeproperty(datetime_to_dbus, "Expires")
1092
1826
    approvals_pending = notifychangeproperty(dbus.Boolean,
1093
1827
                                             "ApprovalPending",
1094
 
                                             type_func = bool)
 
1828
                                             type_func=bool)
1095
1829
    enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1096
1830
    last_enabled = notifychangeproperty(datetime_to_dbus,
1097
1831
                                        "LastEnabled")
1098
 
    checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1099
 
                                   type_func = lambda checker:
1100
 
                                       checker is not None)
 
1832
    checker = notifychangeproperty(
 
1833
        dbus.Boolean, "CheckerRunning",
 
1834
        type_func=lambda checker: checker is not None)
1101
1835
    last_checked_ok = notifychangeproperty(datetime_to_dbus,
1102
1836
                                           "LastCheckedOK")
 
1837
    last_checker_status = notifychangeproperty(dbus.Int16,
 
1838
                                               "LastCheckerStatus")
1103
1839
    last_approval_request = notifychangeproperty(
1104
1840
        datetime_to_dbus, "LastApprovalRequest")
1105
1841
    approved_by_default = notifychangeproperty(dbus.Boolean,
1106
1842
                                               "ApprovedByDefault")
1107
 
    approval_delay = notifychangeproperty(dbus.UInt64,
1108
 
                                          "ApprovalDelay",
1109
 
                                          type_func =
1110
 
                                          timedelta_to_milliseconds)
 
1843
    approval_delay = notifychangeproperty(
 
1844
        dbus.UInt64, "ApprovalDelay",
 
1845
        type_func=lambda td: td.total_seconds() * 1000)
1111
1846
    approval_duration = notifychangeproperty(
1112
1847
        dbus.UInt64, "ApprovalDuration",
1113
 
        type_func = timedelta_to_milliseconds)
 
1848
        type_func=lambda td: td.total_seconds() * 1000)
1114
1849
    host = notifychangeproperty(dbus.String, "Host")
1115
 
    timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1116
 
                                   type_func =
1117
 
                                   timedelta_to_milliseconds)
 
1850
    timeout = notifychangeproperty(
 
1851
        dbus.UInt64, "Timeout",
 
1852
        type_func=lambda td: td.total_seconds() * 1000)
1118
1853
    extended_timeout = notifychangeproperty(
1119
1854
        dbus.UInt64, "ExtendedTimeout",
1120
 
        type_func = timedelta_to_milliseconds)
1121
 
    interval = notifychangeproperty(dbus.UInt64,
1122
 
                                    "Interval",
1123
 
                                    type_func =
1124
 
                                    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)
1125
1859
    checker_command = notifychangeproperty(dbus.String, "Checker")
1126
 
    
 
1860
    secret = notifychangeproperty(dbus.ByteArray, "Secret",
 
1861
                                  invalidate_only=True)
 
1862
 
1127
1863
    del notifychangeproperty
1128
 
    
 
1864
 
1129
1865
    def __del__(self, *args, **kwargs):
1130
1866
        try:
1131
1867
            self.remove_from_connection()
1134
1870
        if hasattr(DBusObjectWithProperties, "__del__"):
1135
1871
            DBusObjectWithProperties.__del__(self, *args, **kwargs)
1136
1872
        Client.__del__(self, *args, **kwargs)
1137
 
    
1138
 
    def checker_callback(self, pid, condition, command,
1139
 
                         *args, **kwargs):
1140
 
        self.checker_callback_tag = None
1141
 
        self.checker = None
1142
 
        if os.WIFEXITED(condition):
1143
 
            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:
1144
1881
            # Emit D-Bus signal
1145
1882
            self.CheckerCompleted(dbus.Int16(exitstatus),
1146
 
                                  dbus.Int64(condition),
 
1883
                                  # This is specific to GNU libC
 
1884
                                  dbus.Int64(exitstatus << 8),
1147
1885
                                  dbus.String(command))
1148
1886
        else:
1149
1887
            # Emit D-Bus signal
1150
1888
            self.CheckerCompleted(dbus.Int16(-1),
1151
 
                                  dbus.Int64(condition),
 
1889
                                  dbus.Int64(
 
1890
                                      # This is specific to GNU libC
 
1891
                                      (exitstatus << 8)
 
1892
                                      | self.last_checker_signal),
1152
1893
                                  dbus.String(command))
1153
 
        
1154
 
        return Client.checker_callback(self, pid, condition, command,
1155
 
                                       *args, **kwargs)
1156
 
    
 
1894
        return ret
 
1895
 
1157
1896
    def start_checker(self, *args, **kwargs):
1158
 
        old_checker = self.checker
1159
 
        if self.checker is not None:
1160
 
            old_checker_pid = self.checker.pid
1161
 
        else:
1162
 
            old_checker_pid = None
 
1897
        old_checker_pid = getattr(self.checker, "pid", None)
1163
1898
        r = Client.start_checker(self, *args, **kwargs)
1164
1899
        # Only if new checker process was started
1165
1900
        if (self.checker is not None
1167
1902
            # Emit D-Bus signal
1168
1903
            self.CheckerStarted(self.current_checker_command)
1169
1904
        return r
1170
 
    
 
1905
 
1171
1906
    def _reset_approved(self):
1172
1907
        self.approved = None
1173
1908
        return False
1174
 
    
 
1909
 
1175
1910
    def approve(self, value=True):
1176
 
        self.send_changedstate()
1177
1911
        self.approved = value
1178
 
        gobject.timeout_add(timedelta_to_milliseconds
1179
 
                            (self.approval_duration),
1180
 
                            self._reset_approved)
1181
 
    
1182
 
    
1183
 
    ## D-Bus methods, signals & properties
1184
 
    _interface = "se.recompile.Mandos.Client"
1185
 
    
1186
 
    ## Signals
1187
 
    
 
1912
        GLib.timeout_add(int(self.approval_duration.total_seconds()
 
1913
                             * 1000), self._reset_approved)
 
1914
        self.send_changedstate()
 
1915
 
 
1916
    #  D-Bus methods, signals & properties
 
1917
 
 
1918
    #  Interfaces
 
1919
 
 
1920
    #  Signals
 
1921
 
1188
1922
    # CheckerCompleted - signal
1189
1923
    @dbus.service.signal(_interface, signature="nxs")
1190
1924
    def CheckerCompleted(self, exitcode, waitstatus, command):
1191
1925
        "D-Bus signal"
1192
1926
        pass
1193
 
    
 
1927
 
1194
1928
    # CheckerStarted - signal
1195
1929
    @dbus.service.signal(_interface, signature="s")
1196
1930
    def CheckerStarted(self, command):
1197
1931
        "D-Bus signal"
1198
1932
        pass
1199
 
    
 
1933
 
1200
1934
    # PropertyChanged - signal
 
1935
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1201
1936
    @dbus.service.signal(_interface, signature="sv")
1202
1937
    def PropertyChanged(self, property, value):
1203
1938
        "D-Bus signal"
1204
1939
        pass
1205
 
    
 
1940
 
1206
1941
    # GotSecret - signal
1207
1942
    @dbus.service.signal(_interface)
1208
1943
    def GotSecret(self):
1211
1946
        server to mandos-client
1212
1947
        """
1213
1948
        pass
1214
 
    
 
1949
 
1215
1950
    # Rejected - signal
1216
1951
    @dbus.service.signal(_interface, signature="s")
1217
1952
    def Rejected(self, reason):
1218
1953
        "D-Bus signal"
1219
1954
        pass
1220
 
    
 
1955
 
1221
1956
    # NeedApproval - signal
1222
1957
    @dbus.service.signal(_interface, signature="tb")
1223
1958
    def NeedApproval(self, timeout, default):
1224
1959
        "D-Bus signal"
1225
1960
        return self.need_approval()
1226
 
    
1227
 
    # NewRequest - signal
1228
 
    @dbus.service.signal(_interface, signature="s")
1229
 
    def NewRequest(self, ip):
1230
 
        """D-Bus signal
1231
 
        Is sent after a client request a secret.
1232
 
        """
1233
 
        pass
1234
 
    
1235
 
    ## Methods
1236
 
    
 
1961
 
 
1962
    #  Methods
 
1963
 
1237
1964
    # Approve - method
1238
1965
    @dbus.service.method(_interface, in_signature="b")
1239
1966
    def Approve(self, value):
1240
1967
        self.approve(value)
1241
 
    
 
1968
 
1242
1969
    # CheckedOK - method
1243
1970
    @dbus.service.method(_interface)
1244
1971
    def CheckedOK(self):
1245
1972
        self.checked_ok()
1246
 
    
 
1973
 
1247
1974
    # Enable - method
 
1975
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1248
1976
    @dbus.service.method(_interface)
1249
1977
    def Enable(self):
1250
1978
        "D-Bus method"
1251
1979
        self.enable()
1252
 
    
 
1980
 
1253
1981
    # StartChecker - method
 
1982
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1254
1983
    @dbus.service.method(_interface)
1255
1984
    def StartChecker(self):
1256
1985
        "D-Bus method"
1257
1986
        self.start_checker()
1258
 
    
 
1987
 
1259
1988
    # Disable - method
 
1989
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1260
1990
    @dbus.service.method(_interface)
1261
1991
    def Disable(self):
1262
1992
        "D-Bus method"
1263
1993
        self.disable()
1264
 
    
 
1994
 
1265
1995
    # StopChecker - method
 
1996
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1266
1997
    @dbus.service.method(_interface)
1267
1998
    def StopChecker(self):
1268
1999
        self.stop_checker()
1269
 
    
1270
 
    ## Properties
1271
 
    
 
2000
 
 
2001
    #  Properties
 
2002
 
1272
2003
    # ApprovalPending - property
1273
2004
    @dbus_service_property(_interface, signature="b", access="read")
1274
2005
    def ApprovalPending_dbus_property(self):
1275
2006
        return dbus.Boolean(bool(self.approvals_pending))
1276
 
    
 
2007
 
1277
2008
    # ApprovedByDefault - property
1278
 
    @dbus_service_property(_interface, signature="b",
 
2009
    @dbus_service_property(_interface,
 
2010
                           signature="b",
1279
2011
                           access="readwrite")
1280
2012
    def ApprovedByDefault_dbus_property(self, value=None):
1281
2013
        if value is None:       # get
1282
2014
            return dbus.Boolean(self.approved_by_default)
1283
2015
        self.approved_by_default = bool(value)
1284
 
    
 
2016
 
1285
2017
    # ApprovalDelay - property
1286
 
    @dbus_service_property(_interface, signature="t",
 
2018
    @dbus_service_property(_interface,
 
2019
                           signature="t",
1287
2020
                           access="readwrite")
1288
2021
    def ApprovalDelay_dbus_property(self, value=None):
1289
2022
        if value is None:       # get
1290
 
            return dbus.UInt64(self.approval_delay_milliseconds())
 
2023
            return dbus.UInt64(self.approval_delay.total_seconds()
 
2024
                               * 1000)
1291
2025
        self.approval_delay = datetime.timedelta(0, 0, 0, value)
1292
 
    
 
2026
 
1293
2027
    # ApprovalDuration - property
1294
 
    @dbus_service_property(_interface, signature="t",
 
2028
    @dbus_service_property(_interface,
 
2029
                           signature="t",
1295
2030
                           access="readwrite")
1296
2031
    def ApprovalDuration_dbus_property(self, value=None):
1297
2032
        if value is None:       # get
1298
 
            return dbus.UInt64(timedelta_to_milliseconds(
1299
 
                    self.approval_duration))
 
2033
            return dbus.UInt64(self.approval_duration.total_seconds()
 
2034
                               * 1000)
1300
2035
        self.approval_duration = datetime.timedelta(0, 0, 0, value)
1301
 
    
 
2036
 
1302
2037
    # Name - property
 
2038
    @dbus_annotations(
 
2039
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1303
2040
    @dbus_service_property(_interface, signature="s", access="read")
1304
2041
    def Name_dbus_property(self):
1305
2042
        return dbus.String(self.name)
1306
 
    
 
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
 
1307
2051
    # Fingerprint - property
 
2052
    @dbus_annotations(
 
2053
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1308
2054
    @dbus_service_property(_interface, signature="s", access="read")
1309
2055
    def Fingerprint_dbus_property(self):
1310
2056
        return dbus.String(self.fingerprint)
1311
 
    
 
2057
 
1312
2058
    # Host - property
1313
 
    @dbus_service_property(_interface, signature="s",
 
2059
    @dbus_service_property(_interface,
 
2060
                           signature="s",
1314
2061
                           access="readwrite")
1315
2062
    def Host_dbus_property(self, value=None):
1316
2063
        if value is None:       # get
1317
2064
            return dbus.String(self.host)
1318
 
        self.host = unicode(value)
1319
 
    
 
2065
        self.host = str(value)
 
2066
 
1320
2067
    # Created - property
 
2068
    @dbus_annotations(
 
2069
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1321
2070
    @dbus_service_property(_interface, signature="s", access="read")
1322
2071
    def Created_dbus_property(self):
1323
2072
        return datetime_to_dbus(self.created)
1324
 
    
 
2073
 
1325
2074
    # LastEnabled - property
1326
2075
    @dbus_service_property(_interface, signature="s", access="read")
1327
2076
    def LastEnabled_dbus_property(self):
1328
2077
        return datetime_to_dbus(self.last_enabled)
1329
 
    
 
2078
 
1330
2079
    # Enabled - property
1331
 
    @dbus_service_property(_interface, signature="b",
 
2080
    @dbus_service_property(_interface,
 
2081
                           signature="b",
1332
2082
                           access="readwrite")
1333
2083
    def Enabled_dbus_property(self, value=None):
1334
2084
        if value is None:       # get
1337
2087
            self.enable()
1338
2088
        else:
1339
2089
            self.disable()
1340
 
    
 
2090
 
1341
2091
    # LastCheckedOK - property
1342
 
    @dbus_service_property(_interface, signature="s",
 
2092
    @dbus_service_property(_interface,
 
2093
                           signature="s",
1343
2094
                           access="readwrite")
1344
2095
    def LastCheckedOK_dbus_property(self, value=None):
1345
2096
        if value is not None:
1346
2097
            self.checked_ok()
1347
2098
            return
1348
2099
        return datetime_to_dbus(self.last_checked_ok)
1349
 
    
 
2100
 
 
2101
    # LastCheckerStatus - property
 
2102
    @dbus_service_property(_interface, signature="n", access="read")
 
2103
    def LastCheckerStatus_dbus_property(self):
 
2104
        return dbus.Int16(self.last_checker_status)
 
2105
 
1350
2106
    # Expires - property
1351
2107
    @dbus_service_property(_interface, signature="s", access="read")
1352
2108
    def Expires_dbus_property(self):
1353
2109
        return datetime_to_dbus(self.expires)
1354
 
    
 
2110
 
1355
2111
    # LastApprovalRequest - property
1356
2112
    @dbus_service_property(_interface, signature="s", access="read")
1357
2113
    def LastApprovalRequest_dbus_property(self):
1358
2114
        return datetime_to_dbus(self.last_approval_request)
1359
 
    
 
2115
 
1360
2116
    # Timeout - property
1361
 
    @dbus_service_property(_interface, signature="t",
 
2117
    @dbus_service_property(_interface,
 
2118
                           signature="t",
1362
2119
                           access="readwrite")
1363
2120
    def Timeout_dbus_property(self, value=None):
1364
2121
        if value is None:       # get
1365
 
            return dbus.UInt64(self.timeout_milliseconds())
 
2122
            return dbus.UInt64(self.timeout.total_seconds() * 1000)
 
2123
        old_timeout = self.timeout
1366
2124
        self.timeout = datetime.timedelta(0, 0, 0, value)
1367
 
        # Reschedule timeout
 
2125
        # Reschedule disabling
1368
2126
        if self.enabled:
1369
2127
            now = datetime.datetime.utcnow()
1370
 
            time_to_die = timedelta_to_milliseconds(
1371
 
                (self.last_checked_ok + self.timeout) - now)
1372
 
            if time_to_die <= 0:
 
2128
            self.expires += self.timeout - old_timeout
 
2129
            if self.expires <= now:
1373
2130
                # The timeout has passed
1374
2131
                self.disable()
1375
2132
            else:
1376
 
                self.expires = (now +
1377
 
                                datetime.timedelta(milliseconds =
1378
 
                                                   time_to_die))
1379
2133
                if (getattr(self, "disable_initiator_tag", None)
1380
2134
                    is None):
1381
2135
                    return
1382
 
                gobject.source_remove(self.disable_initiator_tag)
1383
 
                self.disable_initiator_tag = (gobject.timeout_add
1384
 
                                              (time_to_die,
1385
 
                                               self.disable))
1386
 
    
 
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
 
1387
2141
    # ExtendedTimeout - property
1388
 
    @dbus_service_property(_interface, signature="t",
 
2142
    @dbus_service_property(_interface,
 
2143
                           signature="t",
1389
2144
                           access="readwrite")
1390
2145
    def ExtendedTimeout_dbus_property(self, value=None):
1391
2146
        if value is None:       # get
1392
 
            return dbus.UInt64(self.extended_timeout_milliseconds())
 
2147
            return dbus.UInt64(self.extended_timeout.total_seconds()
 
2148
                               * 1000)
1393
2149
        self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1394
 
    
 
2150
 
1395
2151
    # Interval - property
1396
 
    @dbus_service_property(_interface, signature="t",
 
2152
    @dbus_service_property(_interface,
 
2153
                           signature="t",
1397
2154
                           access="readwrite")
1398
2155
    def Interval_dbus_property(self, value=None):
1399
2156
        if value is None:       # get
1400
 
            return dbus.UInt64(self.interval_milliseconds())
 
2157
            return dbus.UInt64(self.interval.total_seconds() * 1000)
1401
2158
        self.interval = datetime.timedelta(0, 0, 0, value)
1402
2159
        if getattr(self, "checker_initiator_tag", None) is None:
1403
2160
            return
1404
2161
        if self.enabled:
1405
2162
            # Reschedule checker run
1406
 
            gobject.source_remove(self.checker_initiator_tag)
1407
 
            self.checker_initiator_tag = (gobject.timeout_add
1408
 
                                          (value, self.start_checker))
1409
 
            self.start_checker()    # Start one now, too
1410
 
    
 
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
 
1411
2168
    # Checker - property
1412
 
    @dbus_service_property(_interface, signature="s",
 
2169
    @dbus_service_property(_interface,
 
2170
                           signature="s",
1413
2171
                           access="readwrite")
1414
2172
    def Checker_dbus_property(self, value=None):
1415
2173
        if value is None:       # get
1416
2174
            return dbus.String(self.checker_command)
1417
 
        self.checker_command = unicode(value)
1418
 
    
 
2175
        self.checker_command = str(value)
 
2176
 
1419
2177
    # CheckerRunning - property
1420
 
    @dbus_service_property(_interface, signature="b",
 
2178
    @dbus_service_property(_interface,
 
2179
                           signature="b",
1421
2180
                           access="readwrite")
1422
2181
    def CheckerRunning_dbus_property(self, value=None):
1423
2182
        if value is None:       # get
1426
2185
            self.start_checker()
1427
2186
        else:
1428
2187
            self.stop_checker()
1429
 
    
 
2188
 
1430
2189
    # ObjectPath - property
 
2190
    @dbus_annotations(
 
2191
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
 
2192
         "org.freedesktop.DBus.Deprecated": "true"})
1431
2193
    @dbus_service_property(_interface, signature="o", access="read")
1432
2194
    def ObjectPath_dbus_property(self):
1433
 
        return self.dbus_object_path # is already a dbus.ObjectPath
1434
 
    
 
2195
        return self.dbus_object_path  # is already a dbus.ObjectPath
 
2196
 
1435
2197
    # Secret = property
1436
 
    @dbus_service_property(_interface, signature="ay",
1437
 
                           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)
1438
2205
    def Secret_dbus_property(self, value):
1439
 
        self.secret = str(value)
1440
 
    
 
2206
        self.secret = bytes(value)
 
2207
 
1441
2208
    del _interface
1442
2209
 
1443
2210
 
1444
2211
class ProxyClient(object):
1445
 
    def __init__(self, child_pipe, fpr, address):
 
2212
    def __init__(self, child_pipe, key_id, fpr, address):
1446
2213
        self._pipe = child_pipe
1447
 
        self._pipe.send(('init', fpr, address))
 
2214
        self._pipe.send(('init', key_id, fpr, address))
1448
2215
        if not self._pipe.recv():
1449
 
            raise KeyError()
1450
 
    
 
2216
            raise KeyError(key_id or fpr)
 
2217
 
1451
2218
    def __getattribute__(self, name):
1452
2219
        if name == '_pipe':
1453
2220
            return super(ProxyClient, self).__getattribute__(name)
1456
2223
        if data[0] == 'data':
1457
2224
            return data[1]
1458
2225
        if data[0] == 'function':
 
2226
 
1459
2227
            def func(*args, **kwargs):
1460
2228
                self._pipe.send(('funcall', name, args, kwargs))
1461
2229
                return self._pipe.recv()[1]
 
2230
 
1462
2231
            return func
1463
 
    
 
2232
 
1464
2233
    def __setattr__(self, name, value):
1465
2234
        if name == '_pipe':
1466
2235
            return super(ProxyClient, self).__setattr__(name, value)
1467
2236
        self._pipe.send(('setattr', name, value))
1468
2237
 
1469
2238
 
1470
 
class ClientDBusTransitional(ClientDBus):
1471
 
    __metaclass__ = AlternateDBusNamesMetaclass
1472
 
 
1473
 
 
1474
2239
class ClientHandler(socketserver.BaseRequestHandler, object):
1475
2240
    """A class to handle client connections.
1476
 
    
 
2241
 
1477
2242
    Instantiated once for each connection to handle it.
1478
2243
    Note: This will run in its own forked process."""
1479
 
    
 
2244
 
1480
2245
    def handle(self):
1481
2246
        with contextlib.closing(self.server.child_pipe) as child_pipe:
1482
2247
            logger.info("TCP connection from: %s",
1483
 
                        unicode(self.client_address))
 
2248
                        str(self.client_address))
1484
2249
            logger.debug("Pipe FD: %d",
1485
2250
                         self.server.child_pipe.fileno())
1486
 
            
1487
 
            session = (gnutls.connection
1488
 
                       .ClientSession(self.request,
1489
 
                                      gnutls.connection
1490
 
                                      .X509Credentials()))
1491
 
            
1492
 
            # Note: gnutls.connection.X509Credentials is really a
1493
 
            # generic GnuTLS certificate credentials object so long as
1494
 
            # no X.509 keys are added to it.  Therefore, we can use it
1495
 
            # here despite using OpenPGP certificates.
1496
 
            
1497
 
            #priority = ':'.join(("NONE", "+VERS-TLS1.1",
1498
 
            #                      "+AES-256-CBC", "+SHA1",
1499
 
            #                      "+COMP-NULL", "+CTYPE-OPENPGP",
1500
 
            #                      "+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"))
1501
2258
            # Use a fallback default, since this MUST be set.
1502
2259
            priority = self.server.gnutls_priority
1503
2260
            if priority is None:
1504
2261
                priority = "NORMAL"
1505
 
            (gnutls.library.functions
1506
 
             .gnutls_priority_set_direct(session._c_object,
1507
 
                                         priority, None))
1508
 
            
 
2262
            gnutls.priority_set_direct(session._c_object,
 
2263
                                       priority.encode("utf-8"),
 
2264
                                       None)
 
2265
 
1509
2266
            # Start communication using the Mandos protocol
1510
2267
            # Get protocol number
1511
2268
            line = self.request.makefile().readline()
1512
2269
            logger.debug("Protocol version: %r", line)
1513
2270
            try:
1514
2271
                if int(line.strip().split()[0]) > 1:
1515
 
                    raise RuntimeError
 
2272
                    raise RuntimeError(line)
1516
2273
            except (ValueError, IndexError, RuntimeError) as error:
1517
2274
                logger.error("Unknown protocol version: %s", error)
1518
2275
                return
1519
 
            
 
2276
 
1520
2277
            # Start GnuTLS connection
1521
2278
            try:
1522
2279
                session.handshake()
1523
 
            except gnutls.errors.GNUTLSError as error:
 
2280
            except gnutls.Error as error:
1524
2281
                logger.warning("Handshake failed: %s", error)
1525
2282
                # Do not run session.bye() here: the session is not
1526
2283
                # established.  Just abandon the request.
1527
2284
                return
1528
2285
            logger.debug("Handshake succeeded")
1529
 
            
 
2286
 
1530
2287
            approval_required = False
1531
2288
            try:
1532
 
                try:
1533
 
                    fpr = self.fingerprint(self.peer_certificate
1534
 
                                           (session))
1535
 
                except (TypeError,
1536
 
                        gnutls.errors.GNUTLSError) as error:
1537
 
                    logger.warning("Bad certificate: %s", error)
1538
 
                    return
1539
 
                logger.debug("Fingerprint: %s", fpr)
1540
 
                
1541
 
                try:
1542
 
                    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,
1543
2311
                                         self.client_address)
1544
2312
                except KeyError:
1545
2313
                    return
1546
 
                
1547
 
                if self.server.use_dbus:
1548
 
                    # Emit D-Bus signal
1549
 
                    client.NewRequest(unicode(self.client_address)[0])
1550
 
                
 
2314
 
1551
2315
                if client.approval_delay:
1552
2316
                    delay = client.approval_delay
1553
2317
                    client.approvals_pending += 1
1554
2318
                    approval_required = True
1555
 
                
 
2319
 
1556
2320
                while True:
1557
2321
                    if not client.enabled:
1558
2322
                        logger.info("Client %s is disabled",
1559
 
                                       client.name)
 
2323
                                    client.name)
1560
2324
                        if self.server.use_dbus:
1561
2325
                            # Emit D-Bus signal
1562
2326
                            client.Rejected("Disabled")
1563
2327
                        return
1564
 
                    
 
2328
 
1565
2329
                    if client.approved or not client.approval_delay:
1566
 
                        #We are approved or approval is disabled
 
2330
                        # We are approved or approval is disabled
1567
2331
                        break
1568
2332
                    elif client.approved is None:
1569
2333
                        logger.info("Client %s needs approval",
1571
2335
                        if self.server.use_dbus:
1572
2336
                            # Emit D-Bus signal
1573
2337
                            client.NeedApproval(
1574
 
                                client.approval_delay_milliseconds(),
1575
 
                                client.approved_by_default)
 
2338
                                client.approval_delay.total_seconds()
 
2339
                                * 1000, client.approved_by_default)
1576
2340
                    else:
1577
2341
                        logger.warning("Client %s was not approved",
1578
2342
                                       client.name)
1580
2344
                            # Emit D-Bus signal
1581
2345
                            client.Rejected("Denied")
1582
2346
                        return
1583
 
                    
1584
 
                    #wait until timeout or approved
 
2347
 
 
2348
                    # wait until timeout or approved
1585
2349
                    time = datetime.datetime.now()
1586
2350
                    client.changedstate.acquire()
1587
 
                    (client.changedstate.wait
1588
 
                     (float(client.timedelta_to_milliseconds(delay)
1589
 
                            / 1000)))
 
2351
                    client.changedstate.wait(delay.total_seconds())
1590
2352
                    client.changedstate.release()
1591
2353
                    time2 = datetime.datetime.now()
1592
2354
                    if (time2 - time) >= delay:
1602
2364
                            break
1603
2365
                    else:
1604
2366
                        delay -= time2 - time
1605
 
                
1606
 
                sent_size = 0
1607
 
                while sent_size < len(client.secret):
1608
 
                    try:
1609
 
                        sent = session.send(client.secret[sent_size:])
1610
 
                    except gnutls.errors.GNUTLSError as error:
1611
 
                        logger.warning("gnutls send failed")
1612
 
                        return
1613
 
                    logger.debug("Sent: %d, remaining: %d",
1614
 
                                 sent, len(client.secret)
1615
 
                                 - (sent_size + sent))
1616
 
                    sent_size += sent
1617
 
                
 
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
 
1618
2375
                logger.info("Sending secret to %s", client.name)
1619
2376
                # bump the timeout using extended_timeout
1620
 
                client.checked_ok(client.extended_timeout)
 
2377
                client.bump_timeout(client.extended_timeout)
1621
2378
                if self.server.use_dbus:
1622
2379
                    # Emit D-Bus signal
1623
2380
                    client.GotSecret()
1624
 
            
 
2381
 
1625
2382
            finally:
1626
2383
                if approval_required:
1627
2384
                    client.approvals_pending -= 1
1628
2385
                try:
1629
2386
                    session.bye()
1630
 
                except gnutls.errors.GNUTLSError as error:
1631
 
                    logger.warning("GnuTLS bye failed")
1632
 
    
 
2387
                except gnutls.Error as error:
 
2388
                    logger.warning("GnuTLS bye failed",
 
2389
                                   exc_info=error)
 
2390
 
1633
2391
    @staticmethod
1634
2392
    def peer_certificate(session):
1635
 
        "Return the peer's OpenPGP certificate as a bytestring"
1636
 
        # If not an OpenPGP certificate...
1637
 
        if (gnutls.library.functions
1638
 
            .gnutls_certificate_type_get(session._c_object)
1639
 
            != gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1640
 
            # ...do the normal thing
1641
 
            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""
1642
2409
        list_size = ctypes.c_uint(1)
1643
 
        cert_list = (gnutls.library.functions
1644
 
                     .gnutls_certificate_get_peers
 
2410
        cert_list = (gnutls.certificate_get_peers
1645
2411
                     (session._c_object, ctypes.byref(list_size)))
1646
2412
        if not bool(cert_list) and list_size.value != 0:
1647
 
            raise gnutls.errors.GNUTLSError("error getting peer"
1648
 
                                            " certificate")
 
2413
            raise gnutls.Error("error getting peer certificate")
1649
2414
        if list_size.value == 0:
1650
2415
            return None
1651
2416
        cert = cert_list[0]
1652
2417
        return ctypes.string_at(cert.data, cert.size)
1653
 
    
 
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
 
1654
2453
    @staticmethod
1655
2454
    def fingerprint(openpgp):
1656
2455
        "Convert an OpenPGP bytestring to a hexdigit fingerprint"
1657
2456
        # New GnuTLS "datum" with the OpenPGP public key
1658
 
        datum = (gnutls.library.types
1659
 
                 .gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1660
 
                                             ctypes.POINTER
1661
 
                                             (ctypes.c_ubyte)),
1662
 
                                 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)))
1663
2461
        # New empty GnuTLS certificate
1664
 
        crt = gnutls.library.types.gnutls_openpgp_crt_t()
1665
 
        (gnutls.library.functions
1666
 
         .gnutls_openpgp_crt_init(ctypes.byref(crt)))
 
2462
        crt = gnutls.openpgp_crt_t()
 
2463
        gnutls.openpgp_crt_init(ctypes.byref(crt))
1667
2464
        # Import the OpenPGP public key into the certificate
1668
 
        (gnutls.library.functions
1669
 
         .gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1670
 
                                    gnutls.library.constants
1671
 
                                    .GNUTLS_OPENPGP_FMT_RAW))
 
2465
        gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
 
2466
                                  gnutls.OPENPGP_FMT_RAW)
1672
2467
        # Verify the self signature in the key
1673
2468
        crtverify = ctypes.c_uint()
1674
 
        (gnutls.library.functions
1675
 
         .gnutls_openpgp_crt_verify_self(crt, 0,
1676
 
                                         ctypes.byref(crtverify)))
 
2469
        gnutls.openpgp_crt_verify_self(crt, 0,
 
2470
                                       ctypes.byref(crtverify))
1677
2471
        if crtverify.value != 0:
1678
 
            gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1679
 
            raise (gnutls.errors.CertificateSecurityError
1680
 
                   ("Verify failed"))
 
2472
            gnutls.openpgp_crt_deinit(crt)
 
2473
            raise gnutls.CertificateSecurityError(code
 
2474
                                                  =crtverify.value)
1681
2475
        # New buffer for the fingerprint
1682
2476
        buf = ctypes.create_string_buffer(20)
1683
2477
        buf_len = ctypes.c_size_t()
1684
2478
        # Get the fingerprint from the certificate into the buffer
1685
 
        (gnutls.library.functions
1686
 
         .gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1687
 
                                             ctypes.byref(buf_len)))
 
2479
        gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
 
2480
                                           ctypes.byref(buf_len))
1688
2481
        # Deinit the certificate
1689
 
        gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
 
2482
        gnutls.openpgp_crt_deinit(crt)
1690
2483
        # Convert the buffer to a Python bytestring
1691
2484
        fpr = ctypes.string_at(buf, buf_len.value)
1692
2485
        # Convert the bytestring to hexadecimal notation
1696
2489
 
1697
2490
class MultiprocessingMixIn(object):
1698
2491
    """Like socketserver.ThreadingMixIn, but with multiprocessing"""
 
2492
 
1699
2493
    def sub_process_main(self, request, address):
1700
2494
        try:
1701
2495
            self.finish_request(request, address)
1702
2496
        except Exception:
1703
2497
            self.handle_error(request, address)
1704
2498
        self.close_request(request)
1705
 
    
 
2499
 
1706
2500
    def process_request(self, request, address):
1707
2501
        """Start a new process to process the request."""
1708
 
        proc = multiprocessing.Process(target = self.sub_process_main,
1709
 
                                       args = (request,
1710
 
                                               address))
 
2502
        proc = multiprocessing.Process(target=self.sub_process_main,
 
2503
                                       args=(request, address))
1711
2504
        proc.start()
1712
2505
        return proc
1713
2506
 
1714
2507
 
1715
2508
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1716
2509
    """ adds a pipe to the MixIn """
 
2510
 
1717
2511
    def process_request(self, request, client_address):
1718
2512
        """Overrides and wraps the original process_request().
1719
 
        
 
2513
 
1720
2514
        This function creates a new pipe in self.pipe
1721
2515
        """
1722
2516
        parent_pipe, self.child_pipe = multiprocessing.Pipe()
1723
 
        
 
2517
 
1724
2518
        proc = MultiprocessingMixIn.process_request(self, request,
1725
2519
                                                    client_address)
1726
2520
        self.child_pipe.close()
1727
2521
        self.add_pipe(parent_pipe, proc)
1728
 
    
 
2522
 
1729
2523
    def add_pipe(self, parent_pipe, proc):
1730
2524
        """Dummy function; override as necessary"""
1731
 
        raise NotImplementedError
 
2525
        raise NotImplementedError()
1732
2526
 
1733
2527
 
1734
2528
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1735
2529
                     socketserver.TCPServer, object):
1736
2530
    """IPv6-capable TCP server.  Accepts 'None' as address and/or port
1737
 
    
 
2531
 
1738
2532
    Attributes:
1739
2533
        enabled:        Boolean; whether this server is activated yet
1740
2534
        interface:      None or a network interface name (string)
1741
2535
        use_ipv6:       Boolean; to use IPv6 or not
1742
2536
    """
 
2537
 
1743
2538
    def __init__(self, server_address, RequestHandlerClass,
1744
 
                 interface=None, use_ipv6=True):
 
2539
                 interface=None,
 
2540
                 use_ipv6=True,
 
2541
                 socketfd=None):
 
2542
        """If socketfd is set, use that file descriptor instead of
 
2543
        creating a new one with socket.socket().
 
2544
        """
1745
2545
        self.interface = interface
1746
2546
        if use_ipv6:
1747
2547
            self.address_family = socket.AF_INET6
 
2548
        if socketfd is not None:
 
2549
            # Save the file descriptor
 
2550
            self.socketfd = socketfd
 
2551
            # Save the original socket.socket() function
 
2552
            self.socket_socket = socket.socket
 
2553
 
 
2554
            # To implement --socket, we monkey patch socket.socket.
 
2555
            #
 
2556
            # (When socketserver.TCPServer is a new-style class, we
 
2557
            # could make self.socket into a property instead of monkey
 
2558
            # patching socket.socket.)
 
2559
            #
 
2560
            # Create a one-time-only replacement for socket.socket()
 
2561
            @functools.wraps(socket.socket)
 
2562
            def socket_wrapper(*args, **kwargs):
 
2563
                # Restore original function so subsequent calls are
 
2564
                # not affected.
 
2565
                socket.socket = self.socket_socket
 
2566
                del self.socket_socket
 
2567
                # This time only, return a new socket object from the
 
2568
                # saved file descriptor.
 
2569
                return socket.fromfd(self.socketfd, *args, **kwargs)
 
2570
            # Replace socket.socket() function with wrapper
 
2571
            socket.socket = socket_wrapper
 
2572
        # The socketserver.TCPServer.__init__ will call
 
2573
        # socket.socket(), which might be our replacement,
 
2574
        # socket_wrapper(), if socketfd was set.
1748
2575
        socketserver.TCPServer.__init__(self, server_address,
1749
2576
                                        RequestHandlerClass)
 
2577
 
1750
2578
    def server_bind(self):
1751
2579
        """This overrides the normal server_bind() function
1752
2580
        to bind to an interface if one was specified, and also NOT to
1753
2581
        bind to an address or port if they were not specified."""
 
2582
        global SO_BINDTODEVICE
1754
2583
        if self.interface is not None:
1755
2584
            if SO_BINDTODEVICE is None:
1756
 
                logger.error("SO_BINDTODEVICE does not exist;"
1757
 
                             " cannot bind to interface %s",
1758
 
                             self.interface)
1759
 
            else:
1760
 
                try:
1761
 
                    self.socket.setsockopt(socket.SOL_SOCKET,
1762
 
                                           SO_BINDTODEVICE,
1763
 
                                           str(self.interface
1764
 
                                               + '\0'))
1765
 
                except socket.error as error:
1766
 
                    if error[0] == errno.EPERM:
1767
 
                        logger.error("No permission to"
1768
 
                                     " bind to interface %s",
1769
 
                                     self.interface)
1770
 
                    elif error[0] == errno.ENOPROTOOPT:
1771
 
                        logger.error("SO_BINDTODEVICE not available;"
1772
 
                                     " cannot bind to interface %s",
1773
 
                                     self.interface)
1774
 
                    else:
1775
 
                        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
1776
2606
        # Only bind(2) the socket if we really need to.
1777
2607
        if self.server_address[0] or self.server_address[1]:
 
2608
            if self.server_address[1]:
 
2609
                self.allow_reuse_address = True
1778
2610
            if not self.server_address[0]:
1779
2611
                if self.address_family == socket.AF_INET6:
1780
 
                    any_address = "::" # in6addr_any
 
2612
                    any_address = "::"  # in6addr_any
1781
2613
                else:
1782
 
                    any_address = socket.INADDR_ANY
 
2614
                    any_address = "0.0.0.0"  # INADDR_ANY
1783
2615
                self.server_address = (any_address,
1784
2616
                                       self.server_address[1])
1785
2617
            elif not self.server_address[1]:
1786
 
                self.server_address = (self.server_address[0],
1787
 
                                       0)
 
2618
                self.server_address = (self.server_address[0], 0)
1788
2619
#                 if self.interface:
1789
2620
#                     self.server_address = (self.server_address[0],
1790
2621
#                                            0, # port
1796
2627
 
1797
2628
class MandosServer(IPv6_TCPServer):
1798
2629
    """Mandos server.
1799
 
    
 
2630
 
1800
2631
    Attributes:
1801
2632
        clients:        set of Client objects
1802
2633
        gnutls_priority GnuTLS priority string
1803
2634
        use_dbus:       Boolean; to emit D-Bus signals or not
1804
 
    
1805
 
    Assumes a gobject.MainLoop event loop.
 
2635
 
 
2636
    Assumes a GLib.MainLoop event loop.
1806
2637
    """
 
2638
 
1807
2639
    def __init__(self, server_address, RequestHandlerClass,
1808
 
                 interface=None, use_ipv6=True, clients=None,
1809
 
                 gnutls_priority=None, use_dbus=True):
 
2640
                 interface=None,
 
2641
                 use_ipv6=True,
 
2642
                 clients=None,
 
2643
                 gnutls_priority=None,
 
2644
                 use_dbus=True,
 
2645
                 socketfd=None):
1810
2646
        self.enabled = False
1811
2647
        self.clients = clients
1812
2648
        if self.clients is None:
1815
2651
        self.gnutls_priority = gnutls_priority
1816
2652
        IPv6_TCPServer.__init__(self, server_address,
1817
2653
                                RequestHandlerClass,
1818
 
                                interface = interface,
1819
 
                                use_ipv6 = use_ipv6)
 
2654
                                interface=interface,
 
2655
                                use_ipv6=use_ipv6,
 
2656
                                socketfd=socketfd)
 
2657
 
1820
2658
    def server_activate(self):
1821
2659
        if self.enabled:
1822
2660
            return socketserver.TCPServer.server_activate(self)
1823
 
    
 
2661
 
1824
2662
    def enable(self):
1825
2663
        self.enabled = True
1826
 
    
 
2664
 
1827
2665
    def add_pipe(self, parent_pipe, proc):
1828
2666
        # Call "handle_ipc" for both data and EOF events
1829
 
        gobject.io_add_watch(parent_pipe.fileno(),
1830
 
                             gobject.IO_IN | gobject.IO_HUP,
1831
 
                             functools.partial(self.handle_ipc,
1832
 
                                               parent_pipe =
1833
 
                                               parent_pipe,
1834
 
                                               proc = proc))
1835
 
    
1836
 
    def handle_ipc(self, source, condition, parent_pipe=None,
1837
 
                   proc = None, client_object=None):
1838
 
        condition_names = {
1839
 
            gobject.IO_IN: "IN",   # There is data to read.
1840
 
            gobject.IO_OUT: "OUT", # Data can be written (without
1841
 
                                    # blocking).
1842
 
            gobject.IO_PRI: "PRI", # There is urgent data to read.
1843
 
            gobject.IO_ERR: "ERR", # Error condition.
1844
 
            gobject.IO_HUP: "HUP"  # Hung up (the connection has been
1845
 
                                    # broken, usually for pipes and
1846
 
                                    # sockets).
1847
 
            }
1848
 
        conditions_string = ' | '.join(name
1849
 
                                       for cond, name in
1850
 
                                       condition_names.iteritems()
1851
 
                                       if cond & condition)
 
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):
1852
2678
        # error, or the other end of multiprocessing.Pipe has closed
1853
 
        if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
 
2679
        if condition & (GLib.IO_ERR | GLib.IO_HUP):
1854
2680
            # Wait for other process to exit
1855
2681
            proc.join()
1856
2682
            return False
1857
 
        
 
2683
 
1858
2684
        # Read a request from the child
1859
2685
        request = parent_pipe.recv()
1860
2686
        command = request[0]
1861
 
        
 
2687
 
1862
2688
        if command == 'init':
1863
 
            fpr = request[1]
1864
 
            address = request[2]
1865
 
            
1866
 
            for c in self.clients.itervalues():
1867
 
                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:
1868
2700
                    client = c
1869
2701
                    break
1870
2702
            else:
1871
 
                logger.info("Client not found for fingerprint: %s, ad"
1872
 
                            "dress: %s", fpr, address)
 
2703
                logger.info("Client not found for key ID: %s, address"
 
2704
                            ": %s", key_id or fpr, address)
1873
2705
                if self.use_dbus:
1874
2706
                    # Emit D-Bus signal
1875
 
                    mandos_dbus_service.ClientNotFound(fpr,
 
2707
                    mandos_dbus_service.ClientNotFound(key_id or fpr,
1876
2708
                                                       address[0])
1877
2709
                parent_pipe.send(False)
1878
2710
                return False
1879
 
            
1880
 
            gobject.io_add_watch(parent_pipe.fileno(),
1881
 
                                 gobject.IO_IN | gobject.IO_HUP,
1882
 
                                 functools.partial(self.handle_ipc,
1883
 
                                                   parent_pipe =
1884
 
                                                   parent_pipe,
1885
 
                                                   proc = proc,
1886
 
                                                   client_object =
1887
 
                                                   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))
1888
2719
            parent_pipe.send(True)
1889
2720
            # remove the old hook in favor of the new above hook on
1890
2721
            # same fileno
1893
2724
            funcname = request[1]
1894
2725
            args = request[2]
1895
2726
            kwargs = request[3]
1896
 
            
 
2727
 
1897
2728
            parent_pipe.send(('data', getattr(client_object,
1898
2729
                                              funcname)(*args,
1899
 
                                                         **kwargs)))
1900
 
        
 
2730
                                                        **kwargs)))
 
2731
 
1901
2732
        if command == 'getattr':
1902
2733
            attrname = request[1]
1903
 
            if callable(client_object.__getattribute__(attrname)):
1904
 
                parent_pipe.send(('function',))
 
2734
            if isinstance(client_object.__getattribute__(attrname),
 
2735
                          collections.Callable):
 
2736
                parent_pipe.send(('function', ))
1905
2737
            else:
1906
 
                parent_pipe.send(('data', client_object
1907
 
                                  .__getattribute__(attrname)))
1908
 
        
 
2738
                parent_pipe.send((
 
2739
                    'data', client_object.__getattribute__(attrname)))
 
2740
 
1909
2741
        if command == 'setattr':
1910
2742
            attrname = request[1]
1911
2743
            value = request[2]
1912
2744
            setattr(client_object, attrname, value)
1913
 
        
 
2745
 
1914
2746
        return True
1915
2747
 
1916
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
 
1917
2848
def string_to_delta(interval):
1918
2849
    """Parse a string and return a datetime.timedelta
1919
 
    
 
2850
 
1920
2851
    >>> string_to_delta('7d')
1921
2852
    datetime.timedelta(7)
1922
2853
    >>> string_to_delta('60s')
1930
2861
    >>> string_to_delta('5m 30s')
1931
2862
    datetime.timedelta(0, 330)
1932
2863
    """
 
2864
 
 
2865
    try:
 
2866
        return rfc3339_duration_to_delta(interval)
 
2867
    except ValueError:
 
2868
        pass
 
2869
 
1933
2870
    timevalue = datetime.timedelta(0)
1934
2871
    for s in interval.split():
1935
2872
        try:
1936
 
            suffix = unicode(s[-1])
 
2873
            suffix = s[-1]
1937
2874
            value = int(s[:-1])
1938
2875
            if suffix == "d":
1939
2876
                delta = datetime.timedelta(value)
1946
2883
            elif suffix == "w":
1947
2884
                delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1948
2885
            else:
1949
 
                raise ValueError("Unknown suffix %r" % suffix)
1950
 
        except (ValueError, IndexError) as e:
 
2886
                raise ValueError("Unknown suffix {!r}".format(suffix))
 
2887
        except IndexError as e:
1951
2888
            raise ValueError(*(e.args))
1952
2889
        timevalue += delta
1953
2890
    return timevalue
1954
2891
 
1955
2892
 
1956
 
def daemon(nochdir = False, noclose = False):
 
2893
def daemon(nochdir=False, noclose=False):
1957
2894
    """See daemon(3).  Standard BSD Unix function.
1958
 
    
 
2895
 
1959
2896
    This should really exist as os.daemon, but it doesn't (yet)."""
1960
2897
    if os.fork():
1961
2898
        sys.exit()
1966
2903
        sys.exit()
1967
2904
    if not noclose:
1968
2905
        # Close all standard open file descriptors
1969
 
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
 
2906
        null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1970
2907
        if not stat.S_ISCHR(os.fstat(null).st_mode):
1971
2908
            raise OSError(errno.ENODEV,
1972
 
                          "%s not a character device"
1973
 
                          % os.path.devnull)
 
2909
                          "{} not a character device"
 
2910
                          .format(os.devnull))
1974
2911
        os.dup2(null, sys.stdin.fileno())
1975
2912
        os.dup2(null, sys.stdout.fileno())
1976
2913
        os.dup2(null, sys.stderr.fileno())
1979
2916
 
1980
2917
 
1981
2918
def main():
1982
 
    
 
2919
 
1983
2920
    ##################################################################
1984
2921
    # Parsing of options, both command line and config file
1985
 
    
 
2922
 
1986
2923
    parser = argparse.ArgumentParser()
1987
2924
    parser.add_argument("-v", "--version", action="version",
1988
 
                        version = "%%(prog)s %s" % version,
 
2925
                        version="%(prog)s {}".format(version),
1989
2926
                        help="show version number and exit")
1990
2927
    parser.add_argument("-i", "--interface", metavar="IF",
1991
2928
                        help="Bind to interface IF")
1997
2934
                        help="Run self-test")
1998
2935
    parser.add_argument("--debug", action="store_true",
1999
2936
                        help="Debug mode; run in foreground and log"
2000
 
                        " to terminal")
 
2937
                        " to terminal", default=None)
2001
2938
    parser.add_argument("--debuglevel", metavar="LEVEL",
2002
2939
                        help="Debug level for stdout output")
2003
2940
    parser.add_argument("--priority", help="GnuTLS"
2010
2947
                        " files")
2011
2948
    parser.add_argument("--no-dbus", action="store_false",
2012
2949
                        dest="use_dbus", help="Do not provide D-Bus"
2013
 
                        " system bus interface")
 
2950
                        " system bus interface", default=None)
2014
2951
    parser.add_argument("--no-ipv6", action="store_false",
2015
 
                        dest="use_ipv6", help="Do not use IPv6")
 
2952
                        dest="use_ipv6", help="Do not use IPv6",
 
2953
                        default=None)
2016
2954
    parser.add_argument("--no-restore", action="store_false",
2017
2955
                        dest="restore", help="Do not restore stored"
2018
 
                        " state")
 
2956
                        " state", default=None)
 
2957
    parser.add_argument("--socket", type=int,
 
2958
                        help="Specify a file descriptor to a network"
 
2959
                        " socket to use instead of creating one")
2019
2960
    parser.add_argument("--statedir", metavar="DIR",
2020
2961
                        help="Directory to save/restore state in")
2021
 
    
 
2962
    parser.add_argument("--foreground", action="store_true",
 
2963
                        help="Run in foreground", default=None)
 
2964
    parser.add_argument("--no-zeroconf", action="store_false",
 
2965
                        dest="zeroconf", help="Do not use Zeroconf",
 
2966
                        default=None)
 
2967
 
2022
2968
    options = parser.parse_args()
2023
 
    
 
2969
 
2024
2970
    if options.check:
2025
2971
        import doctest
2026
 
        doctest.testmod()
2027
 
        sys.exit()
2028
 
    
 
2972
        fail_count, test_count = doctest.testmod()
 
2973
        sys.exit(os.EX_OK if fail_count == 0 else 1)
 
2974
 
2029
2975
    # Default values for config file for server-global settings
2030
 
    server_defaults = { "interface": "",
2031
 
                        "address": "",
2032
 
                        "port": "",
2033
 
                        "debug": "False",
2034
 
                        "priority":
2035
 
                        "SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2036
 
                        "servicename": "Mandos",
2037
 
                        "use_dbus": "True",
2038
 
                        "use_ipv6": "True",
2039
 
                        "debuglevel": "",
2040
 
                        "restore": "True",
2041
 
                        "statedir": "/var/lib/mandos"
2042
 
                        }
2043
 
    
 
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
 
2044
2999
    # Parse config file for server-global settings
2045
3000
    server_config = configparser.SafeConfigParser(server_defaults)
2046
3001
    del server_defaults
2047
 
    server_config.read(os.path.join(options.configdir,
2048
 
                                    "mandos.conf"))
 
3002
    server_config.read(os.path.join(options.configdir, "mandos.conf"))
2049
3003
    # Convert the SafeConfigParser object to a dict
2050
3004
    server_settings = server_config.defaults()
2051
3005
    # Use the appropriate methods on the non-string config options
2052
 
    for option in ("debug", "use_dbus", "use_ipv6"):
 
3006
    for option in ("debug", "use_dbus", "use_ipv6", "restore",
 
3007
                   "foreground", "zeroconf"):
2053
3008
        server_settings[option] = server_config.getboolean("DEFAULT",
2054
3009
                                                           option)
2055
3010
    if server_settings["port"]:
2056
3011
        server_settings["port"] = server_config.getint("DEFAULT",
2057
3012
                                                       "port")
 
3013
    if server_settings["socket"]:
 
3014
        server_settings["socket"] = server_config.getint("DEFAULT",
 
3015
                                                         "socket")
 
3016
        # Later, stdin will, and stdout and stderr might, be dup'ed
 
3017
        # over with an opened os.devnull.  But we don't want this to
 
3018
        # happen with a supplied network socket.
 
3019
        if 0 <= server_settings["socket"] <= 2:
 
3020
            server_settings["socket"] = os.dup(server_settings
 
3021
                                               ["socket"])
2058
3022
    del server_config
2059
 
    
 
3023
 
2060
3024
    # Override the settings from the config file with command line
2061
3025
    # options, if set.
2062
3026
    for option in ("interface", "address", "port", "debug",
2063
 
                   "priority", "servicename", "configdir",
2064
 
                   "use_dbus", "use_ipv6", "debuglevel", "restore",
2065
 
                   "statedir"):
 
3027
                   "priority", "servicename", "configdir", "use_dbus",
 
3028
                   "use_ipv6", "debuglevel", "restore", "statedir",
 
3029
                   "socket", "foreground", "zeroconf"):
2066
3030
        value = getattr(options, option)
2067
3031
        if value is not None:
2068
3032
            server_settings[option] = value
2069
3033
    del options
2070
3034
    # Force all strings to be unicode
2071
3035
    for option in server_settings.keys():
2072
 
        if type(server_settings[option]) is str:
2073
 
            server_settings[option] = unicode(server_settings[option])
 
3036
        if isinstance(server_settings[option], bytes):
 
3037
            server_settings[option] = (server_settings[option]
 
3038
                                       .decode("utf-8"))
 
3039
    # Force all boolean options to be boolean
 
3040
    for option in ("debug", "use_dbus", "use_ipv6", "restore",
 
3041
                   "foreground", "zeroconf"):
 
3042
        server_settings[option] = bool(server_settings[option])
 
3043
    # Debug implies foreground
 
3044
    if server_settings["debug"]:
 
3045
        server_settings["foreground"] = True
2074
3046
    # Now we have our good server settings in "server_settings"
2075
 
    
 
3047
 
2076
3048
    ##################################################################
2077
 
    
 
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
 
2078
3055
    # For convenience
2079
3056
    debug = server_settings["debug"]
2080
3057
    debuglevel = server_settings["debuglevel"]
2082
3059
    use_ipv6 = server_settings["use_ipv6"]
2083
3060
    stored_state_path = os.path.join(server_settings["statedir"],
2084
3061
                                     stored_state_file)
2085
 
    
 
3062
    foreground = server_settings["foreground"]
 
3063
    zeroconf = server_settings["zeroconf"]
 
3064
 
2086
3065
    if debug:
2087
3066
        initlogger(debug, logging.DEBUG)
2088
3067
    else:
2091
3070
        else:
2092
3071
            level = getattr(logging, debuglevel.upper())
2093
3072
            initlogger(debug, level)
2094
 
    
 
3073
 
2095
3074
    if server_settings["servicename"] != "Mandos":
2096
 
        syslogger.setFormatter(logging.Formatter
2097
 
                               ('Mandos (%s) [%%(process)d]:'
2098
 
                                ' %%(levelname)s: %%(message)s'
2099
 
                                % server_settings["servicename"]))
2100
 
    
 
3075
        syslogger.setFormatter(
 
3076
            logging.Formatter('Mandos ({}) [%(process)d]:'
 
3077
                              ' %(levelname)s: %(message)s'.format(
 
3078
                                  server_settings["servicename"])))
 
3079
 
2101
3080
    # Parse config file with clients
2102
3081
    client_config = configparser.SafeConfigParser(Client
2103
3082
                                                  .client_defaults)
2104
3083
    client_config.read(os.path.join(server_settings["configdir"],
2105
3084
                                    "clients.conf"))
2106
 
    
 
3085
 
2107
3086
    global mandos_dbus_service
2108
3087
    mandos_dbus_service = None
2109
 
    
2110
 
    tcp_server = MandosServer((server_settings["address"],
2111
 
                               server_settings["port"]),
2112
 
                              ClientHandler,
2113
 
                              interface=(server_settings["interface"]
2114
 
                                         or None),
2115
 
                              use_ipv6=use_ipv6,
2116
 
                              gnutls_priority=
2117
 
                              server_settings["priority"],
2118
 
                              use_dbus=use_dbus)
2119
 
    if not debug:
2120
 
        pidfilename = "/var/run/mandos.pid"
2121
 
        try:
2122
 
            pidfile = open(pidfilename, "w")
2123
 
        except IOError:
2124
 
            logger.error("Could not open file %r", pidfilename)
2125
 
    
2126
 
    try:
2127
 
        uid = pwd.getpwnam("_mandos").pw_uid
2128
 
        gid = pwd.getpwnam("_mandos").pw_gid
2129
 
    except KeyError:
2130
 
        try:
2131
 
            uid = pwd.getpwnam("mandos").pw_uid
2132
 
            gid = pwd.getpwnam("mandos").pw_gid
 
3088
 
 
3089
    socketfd = None
 
3090
    if server_settings["socket"] != "":
 
3091
        socketfd = server_settings["socket"]
 
3092
    tcp_server = MandosServer(
 
3093
        (server_settings["address"], server_settings["port"]),
 
3094
        ClientHandler,
 
3095
        interface=(server_settings["interface"] or None),
 
3096
        use_ipv6=use_ipv6,
 
3097
        gnutls_priority=server_settings["priority"],
 
3098
        use_dbus=use_dbus,
 
3099
        socketfd=socketfd)
 
3100
    if not foreground:
 
3101
        pidfilename = "/run/mandos.pid"
 
3102
        if not os.path.isdir("/run/."):
 
3103
            pidfilename = "/var/run/mandos.pid"
 
3104
        pidfile = None
 
3105
        try:
 
3106
            pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
 
3107
        except IOError as e:
 
3108
            logger.error("Could not open file %r", pidfilename,
 
3109
                         exc_info=e)
 
3110
 
 
3111
    for name, group in (("_mandos", "_mandos"),
 
3112
                        ("mandos", "mandos"),
 
3113
                        ("nobody", "nogroup")):
 
3114
        try:
 
3115
            uid = pwd.getpwnam(name).pw_uid
 
3116
            gid = pwd.getpwnam(group).pw_gid
 
3117
            break
2133
3118
        except KeyError:
2134
 
            try:
2135
 
                uid = pwd.getpwnam("nobody").pw_uid
2136
 
                gid = pwd.getpwnam("nobody").pw_gid
2137
 
            except KeyError:
2138
 
                uid = 65534
2139
 
                gid = 65534
 
3119
            continue
 
3120
    else:
 
3121
        uid = 65534
 
3122
        gid = 65534
2140
3123
    try:
2141
3124
        os.setgid(gid)
2142
3125
        os.setuid(uid)
 
3126
        if debug:
 
3127
            logger.debug("Did setuid/setgid to {}:{}".format(uid,
 
3128
                                                             gid))
2143
3129
    except OSError as error:
2144
 
        if error[0] != errno.EPERM:
2145
 
            raise error
2146
 
    
 
3130
        logger.warning("Failed to setuid/setgid to {}:{}: {}"
 
3131
                       .format(uid, gid, os.strerror(error.errno)))
 
3132
        if error.errno != errno.EPERM:
 
3133
            raise
 
3134
 
2147
3135
    if debug:
2148
3136
        # Enable all possible GnuTLS debugging
2149
 
        
 
3137
 
2150
3138
        # "Use a log level over 10 to enable all debugging options."
2151
3139
        # - GnuTLS manual
2152
 
        gnutls.library.functions.gnutls_global_set_log_level(11)
2153
 
        
2154
 
        @gnutls.library.types.gnutls_log_func
 
3140
        gnutls.global_set_log_level(11)
 
3141
 
 
3142
        @gnutls.log_func
2155
3143
        def debug_gnutls(level, string):
2156
3144
            logger.debug("GnuTLS: %s", string[:-1])
2157
 
        
2158
 
        (gnutls.library.functions
2159
 
         .gnutls_global_set_log_function(debug_gnutls))
2160
 
        
 
3145
 
 
3146
        gnutls.global_set_log_function(debug_gnutls)
 
3147
 
2161
3148
        # Redirect stdin so all checkers get /dev/null
2162
 
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
 
3149
        null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2163
3150
        os.dup2(null, sys.stdin.fileno())
2164
3151
        if null > 2:
2165
3152
            os.close(null)
2166
 
    
 
3153
 
2167
3154
    # Need to fork before connecting to D-Bus
2168
 
    if not debug:
 
3155
    if not foreground:
2169
3156
        # Close all input and output, do double fork, etc.
2170
3157
        daemon()
2171
 
    
2172
 
    gobject.threads_init()
2173
 
    
 
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
 
2174
3163
    global main_loop
2175
3164
    # From the Avahi example code
2176
 
    DBusGMainLoop(set_as_default=True )
2177
 
    main_loop = gobject.MainLoop()
 
3165
    DBusGMainLoop(set_as_default=True)
 
3166
    main_loop = GLib.MainLoop()
2178
3167
    bus = dbus.SystemBus()
2179
3168
    # End of Avahi example code
2180
3169
    if use_dbus:
2181
3170
        try:
2182
3171
            bus_name = dbus.service.BusName("se.recompile.Mandos",
2183
 
                                            bus, do_not_queue=True)
2184
 
            old_bus_name = (dbus.service.BusName
2185
 
                            ("se.bsnet.fukt.Mandos", bus,
2186
 
                             do_not_queue=True))
2187
 
        except dbus.exceptions.NameExistsException as e:
2188
 
            logger.error(unicode(e) + ", disabling D-Bus")
 
3172
                                            bus,
 
3173
                                            do_not_queue=True)
 
3174
            old_bus_name = dbus.service.BusName(
 
3175
                "se.bsnet.fukt.Mandos", bus,
 
3176
                do_not_queue=True)
 
3177
        except dbus.exceptions.DBusException as e:
 
3178
            logger.error("Disabling D-Bus:", exc_info=e)
2189
3179
            use_dbus = False
2190
3180
            server_settings["use_dbus"] = False
2191
3181
            tcp_server.use_dbus = False
2192
 
    protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2193
 
    service = AvahiServiceToSyslog(name =
2194
 
                                   server_settings["servicename"],
2195
 
                                   servicetype = "_mandos._tcp",
2196
 
                                   protocol = protocol, bus = bus)
2197
 
    if server_settings["interface"]:
2198
 
        service.interface = (if_nametoindex
2199
 
                             (str(server_settings["interface"])))
2200
 
    
 
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
 
2201
3193
    global multiprocessing_manager
2202
3194
    multiprocessing_manager = multiprocessing.Manager()
2203
 
    
 
3195
 
2204
3196
    client_class = Client
2205
3197
    if use_dbus:
2206
 
        client_class = functools.partial(ClientDBusTransitional,
2207
 
                                         bus = bus)
2208
 
    
 
3198
        client_class = functools.partial(ClientDBus, bus=bus)
 
3199
 
2209
3200
    client_settings = Client.config_parser(client_config)
2210
3201
    old_client_settings = {}
2211
3202
    clients_data = {}
2212
 
    
 
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
 
2213
3212
    # Get client data and settings from last running state.
2214
3213
    if server_settings["restore"]:
2215
3214
        try:
2216
3215
            with open(stored_state_path, "rb") as stored_state:
2217
 
                clients_data, old_client_settings = (pickle.load
2218
 
                                                     (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"))
2219
3265
            os.remove(stored_state_path)
2220
3266
        except IOError as e:
2221
 
            logger.warning("Could not load persistent state: {0}"
2222
 
                           .format(e))
2223
 
            if e.errno != errno.ENOENT:
 
3267
            if e.errno == errno.ENOENT:
 
3268
                logger.warning("Could not load persistent state:"
 
3269
                               " {}".format(os.strerror(e.errno)))
 
3270
            else:
 
3271
                logger.critical("Could not load persistent state:",
 
3272
                                exc_info=e)
2224
3273
                raise
2225
3274
        except EOFError as e:
2226
3275
            logger.warning("Could not load persistent state: "
2227
 
                           "EOFError: {0}".format(e))
2228
 
    
 
3276
                           "EOFError:",
 
3277
                           exc_info=e)
 
3278
 
2229
3279
    with PGPEngine() as pgp:
2230
 
        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
 
2231
3285
            # Decide which value to use after restoring saved state.
2232
3286
            # We have three different values: Old config file,
2233
3287
            # new config file, and saved state.
2238
3292
                    # For each value in new config, check if it
2239
3293
                    # differs from the old config value (Except for
2240
3294
                    # the "secret" attribute)
2241
 
                    if (name != "secret" and
2242
 
                        value != old_client_settings[client_name]
2243
 
                        [name]):
 
3295
                    if (name != "secret"
 
3296
                        and (value !=
 
3297
                             old_client_settings[client_name][name])):
2244
3298
                        client[name] = value
2245
3299
                except KeyError:
2246
3300
                    pass
2247
 
            
 
3301
 
2248
3302
            # Clients who has passed its expire date can still be
2249
 
            # enabled if its last checker was successful.  Clients
 
3303
            # enabled if its last checker was successful.  A Client
2250
3304
            # whose checker succeeded before we stored its state is
2251
3305
            # assumed to have successfully run all checkers during
2252
3306
            # downtime.
2254
3308
                if datetime.datetime.utcnow() >= client["expires"]:
2255
3309
                    if not client["last_checked_ok"]:
2256
3310
                        logger.warning(
2257
 
                            "disabling client {0} - Client never "
2258
 
                            "performed a successful checker"
2259
 
                            .format(client_name))
 
3311
                            "disabling client {} - Client never "
 
3312
                            "performed a successful checker".format(
 
3313
                                client_name))
2260
3314
                        client["enabled"] = False
2261
3315
                    elif client["last_checker_status"] != 0:
2262
3316
                        logger.warning(
2263
 
                            "disabling client {0} - Client "
2264
 
                            "last checker failed with error code {1}"
2265
 
                            .format(client_name,
2266
 
                                    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"]))
2267
3322
                        client["enabled"] = False
2268
3323
                    else:
2269
 
                        client["expires"] = (datetime.datetime
2270
 
                                             .utcnow()
2271
 
                                             + client["timeout"])
 
3324
                        client["expires"] = (
 
3325
                            datetime.datetime.utcnow()
 
3326
                            + client["timeout"])
2272
3327
                        logger.debug("Last checker succeeded,"
2273
 
                                     " keeping {0} enabled"
2274
 
                                     .format(client_name))
 
3328
                                     " keeping {} enabled".format(
 
3329
                                         client_name))
2275
3330
            try:
2276
 
                client["secret"] = (
2277
 
                    pgp.decrypt(client["encrypted_secret"],
2278
 
                                client_settings[client_name]
2279
 
                                ["secret"]))
 
3331
                client["secret"] = pgp.decrypt(
 
3332
                    client["encrypted_secret"],
 
3333
                    client_settings[client_name]["secret"])
2280
3334
            except PGPError:
2281
3335
                # If decryption fails, we use secret from new settings
2282
 
                logger.debug("Failed to decrypt {0} old secret"
2283
 
                             .format(client_name))
2284
 
                client["secret"] = (
2285
 
                    client_settings[client_name]["secret"])
 
3336
                logger.debug("Failed to decrypt {} old secret".format(
 
3337
                    client_name))
 
3338
                client["secret"] = (client_settings[client_name]
 
3339
                                    ["secret"])
2286
3340
 
2287
 
    
2288
3341
    # Add/remove clients based on new changes made to config
2289
3342
    for client_name in (set(old_client_settings)
2290
3343
                        - set(client_settings)):
2294
3347
        clients_data[client_name] = client_settings[client_name]
2295
3348
 
2296
3349
    # Create all client objects
2297
 
    for client_name, client in clients_data.iteritems():
 
3350
    for client_name, client in clients_data.items():
2298
3351
        tcp_server.clients[client_name] = client_class(
2299
 
            name = client_name, settings = client)
2300
 
    
 
3352
            name=client_name,
 
3353
            settings=client,
 
3354
            server_settings=server_settings)
 
3355
 
2301
3356
    if not tcp_server.clients:
2302
3357
        logger.warning("No clients defined")
2303
 
        
2304
 
    if not debug:
2305
 
        try:
2306
 
            with pidfile:
2307
 
                pid = os.getpid()
2308
 
                pidfile.write(str(pid) + "\n".encode("utf-8"))
2309
 
            del pidfile
2310
 
        except IOError:
2311
 
            logger.error("Could not write to file %r with PID %d",
2312
 
                         pidfilename, pid)
2313
 
        except NameError:
2314
 
            # "pidfile" was never created
2315
 
            pass
 
3358
 
 
3359
    if not foreground:
 
3360
        if pidfile is not None:
 
3361
            pid = os.getpid()
 
3362
            try:
 
3363
                with pidfile:
 
3364
                    print(pid, file=pidfile)
 
3365
            except IOError:
 
3366
                logger.error("Could not write to file %r with PID %d",
 
3367
                             pidfilename, pid)
 
3368
        del pidfile
2316
3369
        del pidfilename
2317
 
        signal.signal(signal.SIGINT, signal.SIG_IGN)
2318
 
    
2319
 
    signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2320
 
    signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2321
 
    
 
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
 
2322
3375
    if use_dbus:
2323
 
        class MandosDBusService(dbus.service.Object):
 
3376
 
 
3377
        @alternate_dbus_interfaces(
 
3378
            {"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
 
3379
        class MandosDBusService(DBusObjectWithObjectManager):
2324
3380
            """A D-Bus proxy object"""
 
3381
 
2325
3382
            def __init__(self):
2326
3383
                dbus.service.Object.__init__(self, bus, "/")
 
3384
 
2327
3385
            _interface = "se.recompile.Mandos"
2328
 
            
 
3386
 
2329
3387
            @dbus.service.signal(_interface, signature="o")
2330
3388
            def ClientAdded(self, objpath):
2331
3389
                "D-Bus signal"
2332
3390
                pass
2333
 
            
 
3391
 
2334
3392
            @dbus.service.signal(_interface, signature="ss")
2335
 
            def ClientNotFound(self, fingerprint, address):
 
3393
            def ClientNotFound(self, key_id, address):
2336
3394
                "D-Bus signal"
2337
3395
                pass
2338
 
            
 
3396
 
 
3397
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
 
3398
                               "true"})
2339
3399
            @dbus.service.signal(_interface, signature="os")
2340
3400
            def ClientRemoved(self, objpath, name):
2341
3401
                "D-Bus signal"
2342
3402
                pass
2343
 
            
 
3403
 
 
3404
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
 
3405
                               "true"})
2344
3406
            @dbus.service.method(_interface, out_signature="ao")
2345
3407
            def GetAllClients(self):
2346
3408
                "D-Bus method"
2347
 
                return dbus.Array(c.dbus_object_path
2348
 
                                  for c in
2349
 
                                  tcp_server.clients.itervalues())
2350
 
            
 
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"})
2351
3414
            @dbus.service.method(_interface,
2352
3415
                                 out_signature="a{oa{sv}}")
2353
3416
            def GetAllClientsWithProperties(self):
2354
3417
                "D-Bus method"
2355
3418
                return dbus.Dictionary(
2356
 
                    ((c.dbus_object_path, c.GetAll(""))
2357
 
                     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()},
2358
3422
                    signature="oa{sv}")
2359
 
            
 
3423
 
2360
3424
            @dbus.service.method(_interface, in_signature="o")
2361
3425
            def RemoveClient(self, object_path):
2362
3426
                "D-Bus method"
2363
 
                for c in tcp_server.clients.itervalues():
 
3427
                for c in tcp_server.clients.values():
2364
3428
                    if c.dbus_object_path == object_path:
2365
3429
                        del tcp_server.clients[c.name]
2366
3430
                        c.remove_from_connection()
2367
 
                        # Don't signal anything except ClientRemoved
 
3431
                        # Don't signal the disabling
2368
3432
                        c.disable(quiet=True)
2369
 
                        # Emit D-Bus signal
2370
 
                        self.ClientRemoved(object_path, c.name)
 
3433
                        # Emit D-Bus signal for removal
 
3434
                        self.client_removed_signal(c)
2371
3435
                        return
2372
3436
                raise KeyError(object_path)
2373
 
            
 
3437
 
2374
3438
            del _interface
2375
 
        
2376
 
        class MandosDBusServiceTransitional(MandosDBusService):
2377
 
            __metaclass__ = AlternateDBusNamesMetaclass
2378
 
        mandos_dbus_service = MandosDBusServiceTransitional()
2379
 
    
 
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
 
 
3476
        mandos_dbus_service = MandosDBusService()
 
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
 
2380
3483
    def cleanup():
2381
3484
        "Cleanup function; run on exit"
2382
 
        service.cleanup()
2383
 
        
2384
 
        multiprocessing.active_children()
 
3485
        if zeroconf:
 
3486
            service.cleanup()
 
3487
 
 
3488
        mp.active_children()
 
3489
        wn.close()
2385
3490
        if not (tcp_server.clients or client_settings):
2386
3491
            return
2387
 
        
 
3492
 
2388
3493
        # Store client before exiting. Secrets are encrypted with key
2389
3494
        # based on what config file has. If config file is
2390
3495
        # removed/edited, old secret will thus be unrecovable.
2391
3496
        clients = {}
2392
3497
        with PGPEngine() as pgp:
2393
 
            for client in tcp_server.clients.itervalues():
 
3498
            for client in tcp_server.clients.values():
2394
3499
                key = client_settings[client.name]["secret"]
2395
3500
                client.encrypted_secret = pgp.encrypt(client.secret,
2396
3501
                                                      key)
2397
3502
                client_dict = {}
2398
 
                
 
3503
 
2399
3504
                # A list of attributes that can not be pickled
2400
3505
                # + secret.
2401
 
                exclude = set(("bus", "changedstate", "secret",
2402
 
                               "checker"))
2403
 
                for name, typ in (inspect.getmembers
2404
 
                                  (dbus.service.Object)):
 
3506
                exclude = {"bus", "changedstate", "secret",
 
3507
                           "checker", "server_settings"}
 
3508
                for name, typ in inspect.getmembers(dbus.service
 
3509
                                                    .Object):
2405
3510
                    exclude.add(name)
2406
 
                
 
3511
 
2407
3512
                client_dict["encrypted_secret"] = (client
2408
3513
                                                   .encrypted_secret)
2409
3514
                for attr in client.client_structure:
2410
3515
                    if attr not in exclude:
2411
3516
                        client_dict[attr] = getattr(client, attr)
2412
 
                
 
3517
 
2413
3518
                clients[client.name] = client_dict
2414
3519
                del client_settings[client.name]["secret"]
2415
 
        
 
3520
 
2416
3521
        try:
2417
 
            tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2418
 
                                                prefix="clients-",
2419
 
                                                dir=os.path.dirname
2420
 
                                                (stored_state_path))
2421
 
            with os.fdopen(tempfd, "wb") as stored_state:
2422
 
                pickle.dump((clients, client_settings), stored_state)
 
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
2423
3531
            os.rename(tempname, stored_state_path)
2424
3532
        except (IOError, OSError) as e:
2425
 
            logger.warning("Could not save persistent state: {0}"
2426
 
                           .format(e))
2427
3533
            if not debug:
2428
3534
                try:
2429
3535
                    os.remove(tempname)
2430
3536
                except NameError:
2431
3537
                    pass
2432
 
            if e.errno not in set((errno.ENOENT, errno.EACCES,
2433
 
                                   errno.EEXIST)):
2434
 
                raise e
2435
 
        
 
3538
            if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
 
3539
                logger.warning("Could not save persistent state: {}"
 
3540
                               .format(os.strerror(e.errno)))
 
3541
            else:
 
3542
                logger.warning("Could not save persistent state:",
 
3543
                               exc_info=e)
 
3544
                raise
 
3545
 
2436
3546
        # Delete all clients, and settings from config
2437
3547
        while tcp_server.clients:
2438
3548
            name, client = tcp_server.clients.popitem()
2439
3549
            if use_dbus:
2440
3550
                client.remove_from_connection()
2441
 
            # Don't signal anything except ClientRemoved
 
3551
            # Don't signal the disabling
2442
3552
            client.disable(quiet=True)
 
3553
            # Emit D-Bus signal for removal
2443
3554
            if use_dbus:
2444
 
                # Emit D-Bus signal
2445
 
                mandos_dbus_service.ClientRemoved(client
2446
 
                                                  .dbus_object_path,
2447
 
                                                  client.name)
 
3555
                mandos_dbus_service.client_removed_signal(client)
2448
3556
        client_settings.clear()
2449
 
    
 
3557
 
2450
3558
    atexit.register(cleanup)
2451
 
    
2452
 
    for client in tcp_server.clients.itervalues():
 
3559
 
 
3560
    for client in tcp_server.clients.values():
2453
3561
        if use_dbus:
2454
 
            # Emit D-Bus signal
2455
 
            mandos_dbus_service.ClientAdded(client.dbus_object_path)
 
3562
            # Emit D-Bus signal for adding
 
3563
            mandos_dbus_service.client_added_signal(client)
2456
3564
        # Need to initiate checking of clients
2457
3565
        if client.enabled:
2458
3566
            client.init_checker()
2459
 
    
 
3567
 
2460
3568
    tcp_server.enable()
2461
3569
    tcp_server.server_activate()
2462
 
    
 
3570
 
2463
3571
    # Find out what port we got
2464
 
    service.port = tcp_server.socket.getsockname()[1]
 
3572
    if zeroconf:
 
3573
        service.port = tcp_server.socket.getsockname()[1]
2465
3574
    if use_ipv6:
2466
3575
        logger.info("Now listening on address %r, port %d,"
2467
 
                    " flowinfo %d, scope_id %d"
2468
 
                    % tcp_server.socket.getsockname())
 
3576
                    " flowinfo %d, scope_id %d",
 
3577
                    *tcp_server.socket.getsockname())
2469
3578
    else:                       # IPv4
2470
 
        logger.info("Now listening on address %r, port %d"
2471
 
                    % tcp_server.socket.getsockname())
2472
 
    
2473
 
    #service.interface = tcp_server.socket.getsockname()[3]
2474
 
    
 
3579
        logger.info("Now listening on address %r, port %d",
 
3580
                    *tcp_server.socket.getsockname())
 
3581
 
 
3582
    # service.interface = tcp_server.socket.getsockname()[3]
 
3583
 
2475
3584
    try:
2476
 
        # From the Avahi example code
2477
 
        try:
2478
 
            service.activate()
2479
 
        except dbus.exceptions.DBusException as error:
2480
 
            logger.critical("DBusException: %s", error)
2481
 
            cleanup()
2482
 
            sys.exit(1)
2483
 
        # End of Avahi example code
2484
 
        
2485
 
        gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2486
 
                             lambda *args, **kwargs:
2487
 
                             (tcp_server.handle_request
2488
 
                              (*args[2:], **kwargs) or True))
2489
 
        
 
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
 
2490
3600
        logger.debug("Starting main loop")
2491
3601
        main_loop.run()
2492
3602
    except AvahiError as error:
2493
 
        logger.critical("AvahiError: %s", error)
 
3603
        logger.critical("Avahi Error", exc_info=error)
2494
3604
        cleanup()
2495
3605
        sys.exit(1)
2496
3606
    except KeyboardInterrupt:
2501
3611
    # Must run before the D-Bus bus name gets deregistered
2502
3612
    cleanup()
2503
3613
 
 
3614
 
2504
3615
if __name__ == '__main__':
2505
3616
    main()