/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
 
#!/usr/bin/python2.7
 
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 © 2008-2015 Teddy Hogeborn
15
 
# Copyright © 2008-2015 Björn Påhlsson
16
 
# 
17
 
# This program is free software: you can redistribute it and/or modify
18
 
# it under the terms of the GNU General Public License as published by
 
14
# Copyright © 2008-2019 Teddy Hogeborn
 
15
# Copyright © 2008-2019 Björn Påhlsson
 
16
#
 
17
# This file is part of Mandos.
 
18
#
 
19
# Mandos is free software: you can redistribute it and/or modify it
 
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
 
#     This program is distributed in the hope that it will be useful,
23
 
#     but WITHOUT ANY WARRANTY; without even the implied warranty of
 
24
#     Mandos is distributed in the hope that it will be useful, but
 
25
#     WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
25
27
#     GNU General Public License for more details.
26
 
# 
 
28
#
27
29
# You should have received a copy of the GNU General Public License
28
 
# along with this program.  If not, see
29
 
# <http://www.gnu.org/licenses/>.
30
 
# 
 
30
# along with Mandos.  If not, see <http://www.gnu.org/licenses/>.
 
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
 
# 
 
33
#
33
34
 
34
35
from __future__ import (division, absolute_import, print_function,
35
36
                        unicode_literals)
36
37
 
37
 
from future_builtins import *
 
38
try:
 
39
    from future_builtins import *
 
40
except ImportError:
 
41
    pass
38
42
 
39
43
try:
40
44
    import SocketServer as socketserver
44
48
import argparse
45
49
import datetime
46
50
import errno
47
 
import gnutls.crypto
48
 
import gnutls.connection
49
 
import gnutls.errors
50
 
import gnutls.library.functions
51
 
import gnutls.library.constants
52
 
import gnutls.library.types
53
51
try:
54
52
    import ConfigParser as configparser
55
53
except ImportError:
82
80
 
83
81
import dbus
84
82
import dbus.service
85
 
try:
86
 
    import gobject
87
 
except ImportError:
88
 
    from gi.repository import GObject as gobject
89
 
import avahi
 
83
from gi.repository import GLib
90
84
from dbus.mainloop.glib import DBusGMainLoop
91
85
import ctypes
92
86
import ctypes.util
93
87
import xml.dom.minidom
94
88
import inspect
95
89
 
 
90
# Try to find the value of SO_BINDTODEVICE:
96
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:
97
94
    SO_BINDTODEVICE = socket.SO_BINDTODEVICE
98
95
except AttributeError:
99
96
    try:
 
97
        # This is where SO_BINDTODEVICE was up to and including Python
 
98
        # 2.6, and also 3.2:
100
99
        from IN import SO_BINDTODEVICE
101
100
    except ImportError:
102
 
        SO_BINDTODEVICE = None
 
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
103
114
 
104
115
if sys.version_info.major == 2:
105
116
    str = unicode
106
117
 
107
 
version = "1.7.1"
 
118
version = "1.8.4"
108
119
stored_state_file = "clients.pickle"
109
120
 
110
121
logger = logging.getLogger()
114
125
    if_nametoindex = ctypes.cdll.LoadLibrary(
115
126
        ctypes.util.find_library("c")).if_nametoindex
116
127
except (OSError, AttributeError):
117
 
    
 
128
 
118
129
    def if_nametoindex(interface):
119
130
        "Get an interface index the hard way, i.e. using fcntl()"
120
131
        SIOCGIFINDEX = 0x8933  # From /usr/include/linux/sockios.h
125
136
        return interface_index
126
137
 
127
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
 
128
155
def initlogger(debug, level=logging.WARNING):
129
156
    """init logger and add loglevel"""
130
 
    
 
157
 
131
158
    global syslogger
132
159
    syslogger = (logging.handlers.SysLogHandler(
133
 
        facility = logging.handlers.SysLogHandler.LOG_DAEMON,
134
 
        address = "/dev/log"))
 
160
        facility=logging.handlers.SysLogHandler.LOG_DAEMON,
 
161
        address="/dev/log"))
135
162
    syslogger.setFormatter(logging.Formatter
136
163
                           ('Mandos [%(process)d]: %(levelname)s:'
137
164
                            ' %(message)s'))
138
165
    logger.addHandler(syslogger)
139
 
    
 
166
 
140
167
    if debug:
141
168
        console = logging.StreamHandler()
142
169
        console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
154
181
 
155
182
class PGPEngine(object):
156
183
    """A simple class for OpenPGP symmetric encryption & decryption"""
157
 
    
 
184
 
158
185
    def __init__(self):
159
186
        self.tempdir = tempfile.mkdtemp(prefix="mandos-")
 
187
        self.gpg = "gpg"
 
188
        try:
 
189
            output = subprocess.check_output(["gpgconf"])
 
190
            for line in output.splitlines():
 
191
                name, text, path = line.split(b":")
 
192
                if name == "gpg":
 
193
                    self.gpg = path
 
194
                    break
 
195
        except OSError as e:
 
196
            if e.errno != errno.ENOENT:
 
197
                raise
160
198
        self.gnupgargs = ['--batch',
161
 
                          '--home', self.tempdir,
 
199
                          '--homedir', self.tempdir,
162
200
                          '--force-mdc',
163
 
                          '--quiet',
164
 
                          '--no-use-agent']
165
 
    
 
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
 
166
206
    def __enter__(self):
167
207
        return self
168
 
    
 
208
 
169
209
    def __exit__(self, exc_type, exc_value, traceback):
170
210
        self._cleanup()
171
211
        return False
172
 
    
 
212
 
173
213
    def __del__(self):
174
214
        self._cleanup()
175
 
    
 
215
 
176
216
    def _cleanup(self):
177
217
        if self.tempdir is not None:
178
218
            # Delete contents of tempdir
179
219
            for root, dirs, files in os.walk(self.tempdir,
180
 
                                             topdown = False):
 
220
                                             topdown=False):
181
221
                for filename in files:
182
222
                    os.remove(os.path.join(root, filename))
183
223
                for dirname in dirs:
185
225
            # Remove tempdir
186
226
            os.rmdir(self.tempdir)
187
227
            self.tempdir = None
188
 
    
 
228
 
189
229
    def password_encode(self, password):
190
230
        # Passphrase can not be empty and can not contain newlines or
191
231
        # NUL bytes.  So we prefix it and hex encode it.
196
236
                       .replace(b"\n", b"\\n")
197
237
                       .replace(b"\0", b"\\x00"))
198
238
        return encoded
199
 
    
 
239
 
200
240
    def encrypt(self, data, password):
201
241
        passphrase = self.password_encode(password)
202
242
        with tempfile.NamedTemporaryFile(
203
243
                dir=self.tempdir) as passfile:
204
244
            passfile.write(passphrase)
205
245
            passfile.flush()
206
 
            proc = subprocess.Popen(['gpg', '--symmetric',
 
246
            proc = subprocess.Popen([self.gpg, '--symmetric',
207
247
                                     '--passphrase-file',
208
248
                                     passfile.name]
209
249
                                    + self.gnupgargs,
210
 
                                    stdin = subprocess.PIPE,
211
 
                                    stdout = subprocess.PIPE,
212
 
                                    stderr = subprocess.PIPE)
213
 
            ciphertext, err = proc.communicate(input = data)
 
250
                                    stdin=subprocess.PIPE,
 
251
                                    stdout=subprocess.PIPE,
 
252
                                    stderr=subprocess.PIPE)
 
253
            ciphertext, err = proc.communicate(input=data)
214
254
        if proc.returncode != 0:
215
255
            raise PGPError(err)
216
256
        return ciphertext
217
 
    
 
257
 
218
258
    def decrypt(self, data, password):
219
259
        passphrase = self.password_encode(password)
220
260
        with tempfile.NamedTemporaryFile(
221
 
                dir = self.tempdir) as passfile:
 
261
                dir=self.tempdir) as passfile:
222
262
            passfile.write(passphrase)
223
263
            passfile.flush()
224
 
            proc = subprocess.Popen(['gpg', '--decrypt',
 
264
            proc = subprocess.Popen([self.gpg, '--decrypt',
225
265
                                     '--passphrase-file',
226
266
                                     passfile.name]
227
267
                                    + self.gnupgargs,
228
 
                                    stdin = subprocess.PIPE,
229
 
                                    stdout = subprocess.PIPE,
230
 
                                    stderr = subprocess.PIPE)
231
 
            decrypted_plaintext, err = proc.communicate(input = data)
 
268
                                    stdin=subprocess.PIPE,
 
269
                                    stdout=subprocess.PIPE,
 
270
                                    stderr=subprocess.PIPE)
 
271
            decrypted_plaintext, err = proc.communicate(input=data)
232
272
        if proc.returncode != 0:
233
273
            raise PGPError(err)
234
274
        return decrypted_plaintext
235
275
 
236
276
 
 
277
# Pretend that we have an Avahi module
 
278
class avahi(object):
 
279
    """This isn't so much a class as it is a module-like namespace."""
 
280
    IF_UNSPEC = -1               # avahi-common/address.h
 
281
    PROTO_UNSPEC = -1            # avahi-common/address.h
 
282
    PROTO_INET = 0               # avahi-common/address.h
 
283
    PROTO_INET6 = 1              # avahi-common/address.h
 
284
    DBUS_NAME = "org.freedesktop.Avahi"
 
285
    DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
 
286
    DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
 
287
    DBUS_PATH_SERVER = "/"
 
288
 
 
289
    @staticmethod
 
290
    def string_array_to_txt_array(t):
 
291
        return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
 
292
                           for s in t), signature="ay")
 
293
    ENTRY_GROUP_ESTABLISHED = 2  # avahi-common/defs.h
 
294
    ENTRY_GROUP_COLLISION = 3    # avahi-common/defs.h
 
295
    ENTRY_GROUP_FAILURE = 4      # avahi-common/defs.h
 
296
    SERVER_INVALID = 0           # avahi-common/defs.h
 
297
    SERVER_REGISTERING = 1       # avahi-common/defs.h
 
298
    SERVER_RUNNING = 2           # avahi-common/defs.h
 
299
    SERVER_COLLISION = 3         # avahi-common/defs.h
 
300
    SERVER_FAILURE = 4           # avahi-common/defs.h
 
301
 
 
302
 
237
303
class AvahiError(Exception):
238
304
    def __init__(self, value, *args, **kwargs):
239
305
        self.value = value
251
317
 
252
318
class AvahiService(object):
253
319
    """An Avahi (Zeroconf) service.
254
 
    
 
320
 
255
321
    Attributes:
256
322
    interface: integer; avahi.IF_UNSPEC or an interface index.
257
323
               Used to optionally bind to the specified interface.
269
335
    server: D-Bus Server
270
336
    bus: dbus.SystemBus()
271
337
    """
272
 
    
 
338
 
273
339
    def __init__(self,
274
 
                 interface = avahi.IF_UNSPEC,
275
 
                 name = None,
276
 
                 servicetype = None,
277
 
                 port = None,
278
 
                 TXT = None,
279
 
                 domain = "",
280
 
                 host = "",
281
 
                 max_renames = 32768,
282
 
                 protocol = avahi.PROTO_UNSPEC,
283
 
                 bus = None):
 
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):
284
350
        self.interface = interface
285
351
        self.name = name
286
352
        self.type = servicetype
295
361
        self.server = None
296
362
        self.bus = bus
297
363
        self.entry_group_state_changed_match = None
298
 
    
 
364
 
299
365
    def rename(self, remove=True):
300
366
        """Derived from the Avahi example code"""
301
367
        if self.rename_count >= self.max_renames:
321
387
                logger.critical("D-Bus Exception", exc_info=error)
322
388
                self.cleanup()
323
389
                os._exit(1)
324
 
    
 
390
 
325
391
    def remove(self):
326
392
        """Derived from the Avahi example code"""
327
393
        if self.entry_group_state_changed_match is not None:
329
395
            self.entry_group_state_changed_match = None
330
396
        if self.group is not None:
331
397
            self.group.Reset()
332
 
    
 
398
 
333
399
    def add(self):
334
400
        """Derived from the Avahi example code"""
335
401
        self.remove()
352
418
            dbus.UInt16(self.port),
353
419
            avahi.string_array_to_txt_array(self.TXT))
354
420
        self.group.Commit()
355
 
    
 
421
 
356
422
    def entry_group_state_changed(self, state, error):
357
423
        """Derived from the Avahi example code"""
358
424
        logger.debug("Avahi entry group state change: %i", state)
359
 
        
 
425
 
360
426
        if state == avahi.ENTRY_GROUP_ESTABLISHED:
361
427
            logger.debug("Zeroconf service established.")
362
428
        elif state == avahi.ENTRY_GROUP_COLLISION:
366
432
            logger.critical("Avahi: Error in group state changed %s",
367
433
                            str(error))
368
434
            raise AvahiGroupError("State changed: {!s}".format(error))
369
 
    
 
435
 
370
436
    def cleanup(self):
371
437
        """Derived from the Avahi example code"""
372
438
        if self.group is not None:
377
443
                pass
378
444
            self.group = None
379
445
        self.remove()
380
 
    
 
446
 
381
447
    def server_state_changed(self, state, error=None):
382
448
        """Derived from the Avahi example code"""
383
449
        logger.debug("Avahi server state change: %i", state)
412
478
                logger.debug("Unknown state: %r", state)
413
479
            else:
414
480
                logger.debug("Unknown state: %r: %r", state, error)
415
 
    
 
481
 
416
482
    def activate(self):
417
483
        """Derived from the Avahi example code"""
418
484
        if self.server is None:
429
495
class AvahiServiceToSyslog(AvahiService):
430
496
    def rename(self, *args, **kwargs):
431
497
        """Add the new name to the syslog messages"""
432
 
        ret = AvahiService.rename(self, *args, **kwargs)
 
498
        ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
433
499
        syslogger.setFormatter(logging.Formatter(
434
500
            'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
435
501
            .format(self.name)))
436
502
        return ret
437
503
 
 
504
 
 
505
# Pretend that we have a GnuTLS module
 
506
class gnutls(object):
 
507
    """This isn't so much a class as it is a module-like namespace."""
 
508
 
 
509
    library = ctypes.util.find_library("gnutls")
 
510
    if library is None:
 
511
        library = ctypes.util.find_library("gnutls-deb0")
 
512
    _library = ctypes.cdll.LoadLibrary(library)
 
513
    del library
 
514
 
 
515
    # Unless otherwise indicated, the constants and types below are
 
516
    # all from the gnutls/gnutls.h C header file.
 
517
 
 
518
    # Constants
 
519
    E_SUCCESS = 0
 
520
    E_INTERRUPTED = -52
 
521
    E_AGAIN = -28
 
522
    CRT_OPENPGP = 2
 
523
    CRT_RAWPK = 3
 
524
    CLIENT = 2
 
525
    SHUT_RDWR = 0
 
526
    CRD_CERTIFICATE = 1
 
527
    E_NO_CERTIFICATE_FOUND = -49
 
528
    X509_FMT_DER = 0
 
529
    NO_TICKETS = 1<<10
 
530
    ENABLE_RAWPK = 1<<18
 
531
    CTYPE_PEERS = 3
 
532
    KEYID_USE_SHA256 = 1        # gnutls/x509.h
 
533
    OPENPGP_FMT_RAW = 0         # gnutls/openpgp.h
 
534
 
 
535
    # Types
 
536
    class session_int(ctypes.Structure):
 
537
        _fields_ = []
 
538
    session_t = ctypes.POINTER(session_int)
 
539
 
 
540
    class certificate_credentials_st(ctypes.Structure):
 
541
        _fields_ = []
 
542
    certificate_credentials_t = ctypes.POINTER(
 
543
        certificate_credentials_st)
 
544
    certificate_type_t = ctypes.c_int
 
545
 
 
546
    class datum_t(ctypes.Structure):
 
547
        _fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
 
548
                    ('size', ctypes.c_uint)]
 
549
 
 
550
    class openpgp_crt_int(ctypes.Structure):
 
551
        _fields_ = []
 
552
    openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
 
553
    openpgp_crt_fmt_t = ctypes.c_int  # gnutls/openpgp.h
 
554
    log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
 
555
    credentials_type_t = ctypes.c_int
 
556
    transport_ptr_t = ctypes.c_void_p
 
557
    close_request_t = ctypes.c_int
 
558
 
 
559
    # Exceptions
 
560
    class Error(Exception):
 
561
        def __init__(self, message=None, code=None, args=()):
 
562
            # Default usage is by a message string, but if a return
 
563
            # code is passed, convert it to a string with
 
564
            # gnutls.strerror()
 
565
            self.code = code
 
566
            if message is None and code is not None:
 
567
                message = gnutls.strerror(code)
 
568
            return super(gnutls.Error, self).__init__(
 
569
                message, *args)
 
570
 
 
571
    class CertificateSecurityError(Error):
 
572
        pass
 
573
 
 
574
    # Classes
 
575
    class Credentials(object):
 
576
        def __init__(self):
 
577
            self._c_object = gnutls.certificate_credentials_t()
 
578
            gnutls.certificate_allocate_credentials(
 
579
                ctypes.byref(self._c_object))
 
580
            self.type = gnutls.CRD_CERTIFICATE
 
581
 
 
582
        def __del__(self):
 
583
            gnutls.certificate_free_credentials(self._c_object)
 
584
 
 
585
    class ClientSession(object):
 
586
        def __init__(self, socket, credentials=None):
 
587
            self._c_object = gnutls.session_t()
 
588
            gnutls_flags = gnutls.CLIENT
 
589
            if gnutls.check_version("3.5.6"):
 
590
                gnutls_flags |= gnutls.NO_TICKETS
 
591
            if gnutls.has_rawpk:
 
592
                gnutls_flags |= gnutls.ENABLE_RAWPK
 
593
            gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
 
594
            del gnutls_flags
 
595
            gnutls.set_default_priority(self._c_object)
 
596
            gnutls.transport_set_ptr(self._c_object, socket.fileno())
 
597
            gnutls.handshake_set_private_extensions(self._c_object,
 
598
                                                    True)
 
599
            self.socket = socket
 
600
            if credentials is None:
 
601
                credentials = gnutls.Credentials()
 
602
            gnutls.credentials_set(self._c_object, credentials.type,
 
603
                                   ctypes.cast(credentials._c_object,
 
604
                                               ctypes.c_void_p))
 
605
            self.credentials = credentials
 
606
 
 
607
        def __del__(self):
 
608
            gnutls.deinit(self._c_object)
 
609
 
 
610
        def handshake(self):
 
611
            return gnutls.handshake(self._c_object)
 
612
 
 
613
        def send(self, data):
 
614
            data = bytes(data)
 
615
            data_len = len(data)
 
616
            while data_len > 0:
 
617
                data_len -= gnutls.record_send(self._c_object,
 
618
                                               data[-data_len:],
 
619
                                               data_len)
 
620
 
 
621
        def bye(self):
 
622
            return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
 
623
 
 
624
    # Error handling functions
 
625
    def _error_code(result):
 
626
        """A function to raise exceptions on errors, suitable
 
627
        for the 'restype' attribute on ctypes functions"""
 
628
        if result >= 0:
 
629
            return result
 
630
        if result == gnutls.E_NO_CERTIFICATE_FOUND:
 
631
            raise gnutls.CertificateSecurityError(code=result)
 
632
        raise gnutls.Error(code=result)
 
633
 
 
634
    def _retry_on_error(result, func, arguments):
 
635
        """A function to retry on some errors, suitable
 
636
        for the 'errcheck' attribute on ctypes functions"""
 
637
        while result < 0:
 
638
            if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
 
639
                return _error_code(result)
 
640
            result = func(*arguments)
 
641
        return result
 
642
 
 
643
    # Unless otherwise indicated, the function declarations below are
 
644
    # all from the gnutls/gnutls.h C header file.
 
645
 
 
646
    # Functions
 
647
    priority_set_direct = _library.gnutls_priority_set_direct
 
648
    priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
 
649
                                    ctypes.POINTER(ctypes.c_char_p)]
 
650
    priority_set_direct.restype = _error_code
 
651
 
 
652
    init = _library.gnutls_init
 
653
    init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
 
654
    init.restype = _error_code
 
655
 
 
656
    set_default_priority = _library.gnutls_set_default_priority
 
657
    set_default_priority.argtypes = [session_t]
 
658
    set_default_priority.restype = _error_code
 
659
 
 
660
    record_send = _library.gnutls_record_send
 
661
    record_send.argtypes = [session_t, ctypes.c_void_p,
 
662
                            ctypes.c_size_t]
 
663
    record_send.restype = ctypes.c_ssize_t
 
664
    record_send.errcheck = _retry_on_error
 
665
 
 
666
    certificate_allocate_credentials = (
 
667
        _library.gnutls_certificate_allocate_credentials)
 
668
    certificate_allocate_credentials.argtypes = [
 
669
        ctypes.POINTER(certificate_credentials_t)]
 
670
    certificate_allocate_credentials.restype = _error_code
 
671
 
 
672
    certificate_free_credentials = (
 
673
        _library.gnutls_certificate_free_credentials)
 
674
    certificate_free_credentials.argtypes = [
 
675
        certificate_credentials_t]
 
676
    certificate_free_credentials.restype = None
 
677
 
 
678
    handshake_set_private_extensions = (
 
679
        _library.gnutls_handshake_set_private_extensions)
 
680
    handshake_set_private_extensions.argtypes = [session_t,
 
681
                                                 ctypes.c_int]
 
682
    handshake_set_private_extensions.restype = None
 
683
 
 
684
    credentials_set = _library.gnutls_credentials_set
 
685
    credentials_set.argtypes = [session_t, credentials_type_t,
 
686
                                ctypes.c_void_p]
 
687
    credentials_set.restype = _error_code
 
688
 
 
689
    strerror = _library.gnutls_strerror
 
690
    strerror.argtypes = [ctypes.c_int]
 
691
    strerror.restype = ctypes.c_char_p
 
692
 
 
693
    certificate_type_get = _library.gnutls_certificate_type_get
 
694
    certificate_type_get.argtypes = [session_t]
 
695
    certificate_type_get.restype = _error_code
 
696
 
 
697
    certificate_get_peers = _library.gnutls_certificate_get_peers
 
698
    certificate_get_peers.argtypes = [session_t,
 
699
                                      ctypes.POINTER(ctypes.c_uint)]
 
700
    certificate_get_peers.restype = ctypes.POINTER(datum_t)
 
701
 
 
702
    global_set_log_level = _library.gnutls_global_set_log_level
 
703
    global_set_log_level.argtypes = [ctypes.c_int]
 
704
    global_set_log_level.restype = None
 
705
 
 
706
    global_set_log_function = _library.gnutls_global_set_log_function
 
707
    global_set_log_function.argtypes = [log_func]
 
708
    global_set_log_function.restype = None
 
709
 
 
710
    deinit = _library.gnutls_deinit
 
711
    deinit.argtypes = [session_t]
 
712
    deinit.restype = None
 
713
 
 
714
    handshake = _library.gnutls_handshake
 
715
    handshake.argtypes = [session_t]
 
716
    handshake.restype = _error_code
 
717
    handshake.errcheck = _retry_on_error
 
718
 
 
719
    transport_set_ptr = _library.gnutls_transport_set_ptr
 
720
    transport_set_ptr.argtypes = [session_t, transport_ptr_t]
 
721
    transport_set_ptr.restype = None
 
722
 
 
723
    bye = _library.gnutls_bye
 
724
    bye.argtypes = [session_t, close_request_t]
 
725
    bye.restype = _error_code
 
726
    bye.errcheck = _retry_on_error
 
727
 
 
728
    check_version = _library.gnutls_check_version
 
729
    check_version.argtypes = [ctypes.c_char_p]
 
730
    check_version.restype = ctypes.c_char_p
 
731
 
 
732
    _need_version = b"3.3.0"
 
733
    if check_version(_need_version) is None:
 
734
        raise self.Error("Needs GnuTLS {} or later"
 
735
                         .format(_need_version))
 
736
 
 
737
    _tls_rawpk_version = b"3.6.6"
 
738
    has_rawpk = bool(check_version(_tls_rawpk_version))
 
739
 
 
740
    if has_rawpk:
 
741
        # Types
 
742
        class pubkey_st(ctypes.Structure):
 
743
            _fields = []
 
744
        pubkey_t = ctypes.POINTER(pubkey_st)
 
745
 
 
746
        x509_crt_fmt_t = ctypes.c_int
 
747
 
 
748
        # All the function declarations below are from gnutls/abstract.h
 
749
        pubkey_init = _library.gnutls_pubkey_init
 
750
        pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
 
751
        pubkey_init.restype = _error_code
 
752
 
 
753
        pubkey_import = _library.gnutls_pubkey_import
 
754
        pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
 
755
                                  x509_crt_fmt_t]
 
756
        pubkey_import.restype = _error_code
 
757
 
 
758
        pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
 
759
        pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
 
760
                                      ctypes.POINTER(ctypes.c_ubyte),
 
761
                                      ctypes.POINTER(ctypes.c_size_t)]
 
762
        pubkey_get_key_id.restype = _error_code
 
763
 
 
764
        pubkey_deinit = _library.gnutls_pubkey_deinit
 
765
        pubkey_deinit.argtypes = [pubkey_t]
 
766
        pubkey_deinit.restype = None
 
767
    else:
 
768
        # All the function declarations below are from gnutls/openpgp.h
 
769
 
 
770
        openpgp_crt_init = _library.gnutls_openpgp_crt_init
 
771
        openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
 
772
        openpgp_crt_init.restype = _error_code
 
773
 
 
774
        openpgp_crt_import = _library.gnutls_openpgp_crt_import
 
775
        openpgp_crt_import.argtypes = [openpgp_crt_t,
 
776
                                       ctypes.POINTER(datum_t),
 
777
                                       openpgp_crt_fmt_t]
 
778
        openpgp_crt_import.restype = _error_code
 
779
 
 
780
        openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
 
781
        openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
 
782
                                            ctypes.POINTER(ctypes.c_uint)]
 
783
        openpgp_crt_verify_self.restype = _error_code
 
784
 
 
785
        openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
 
786
        openpgp_crt_deinit.argtypes = [openpgp_crt_t]
 
787
        openpgp_crt_deinit.restype = None
 
788
 
 
789
        openpgp_crt_get_fingerprint = (
 
790
            _library.gnutls_openpgp_crt_get_fingerprint)
 
791
        openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
 
792
                                                ctypes.c_void_p,
 
793
                                                ctypes.POINTER(
 
794
                                                    ctypes.c_size_t)]
 
795
        openpgp_crt_get_fingerprint.restype = _error_code
 
796
 
 
797
    if check_version("3.6.4"):
 
798
        certificate_type_get2 = _library.gnutls_certificate_type_get2
 
799
        certificate_type_get2.argtypes = [session_t, ctypes.c_int]
 
800
        certificate_type_get2.restype = _error_code
 
801
 
 
802
    # Remove non-public functions
 
803
    del _error_code, _retry_on_error
 
804
 
 
805
 
438
806
def call_pipe(connection,       # : multiprocessing.Connection
439
807
              func, *args, **kwargs):
440
808
    """This function is meant to be called by multiprocessing.Process
441
 
    
 
809
 
442
810
    This function runs func(*args, **kwargs), and writes the resulting
443
811
    return value on the provided multiprocessing.Connection.
444
812
    """
445
813
    connection.send(func(*args, **kwargs))
446
814
    connection.close()
447
815
 
 
816
 
448
817
class Client(object):
449
818
    """A representation of a client host served by this server.
450
 
    
 
819
 
451
820
    Attributes:
452
821
    approved:   bool(); 'None' if not yet approved/disapproved
453
822
    approval_delay: datetime.timedelta(); Time to wait for approval
455
824
    checker:    subprocess.Popen(); a running checker process used
456
825
                                    to see if the client lives.
457
826
                                    'None' if no process is running.
458
 
    checker_callback_tag: a gobject event source tag, or None
 
827
    checker_callback_tag: a GLib event source tag, or None
459
828
    checker_command: string; External command which is run to check
460
829
                     if client lives.  %() expansions are done at
461
830
                     runtime with vars(self) as dict, so that for
462
831
                     instance %(name)s can be used in the command.
463
 
    checker_initiator_tag: a gobject event source tag, or None
 
832
    checker_initiator_tag: a GLib event source tag, or None
464
833
    created:    datetime.datetime(); (UTC) object creation
465
834
    client_structure: Object describing what attributes a client has
466
835
                      and is used for storing the client at exit
467
836
    current_checker_command: string; current running checker_command
468
 
    disable_initiator_tag: a gobject event source tag, or None
 
837
    disable_initiator_tag: a GLib event source tag, or None
469
838
    enabled:    bool()
470
839
    fingerprint: string (40 or 32 hexadecimal digits); used to
471
 
                 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
472
843
    host:       string; available for use by the checker command
473
844
    interval:   datetime.timedelta(); How often to start a new checker
474
845
    last_approval_request: datetime.datetime(); (UTC) or None
490
861
                disabled, or None
491
862
    server_settings: The server_settings dict from main()
492
863
    """
493
 
    
 
864
 
494
865
    runtime_expansions = ("approval_delay", "approval_duration",
495
 
                          "created", "enabled", "expires",
 
866
                          "created", "enabled", "expires", "key_id",
496
867
                          "fingerprint", "host", "interval",
497
868
                          "last_approval_request", "last_checked_ok",
498
869
                          "last_enabled", "name", "timeout")
507
878
        "approved_by_default": "True",
508
879
        "enabled": "True",
509
880
    }
510
 
    
 
881
 
511
882
    @staticmethod
512
883
    def config_parser(config):
513
884
        """Construct a new dict of client settings of this form:
520
891
        for client_name in config.sections():
521
892
            section = dict(config.items(client_name))
522
893
            client = settings[client_name] = {}
523
 
            
 
894
 
524
895
            client["host"] = section["host"]
525
896
            # Reformat values from string types to Python types
526
897
            client["approved_by_default"] = config.getboolean(
527
898
                client_name, "approved_by_default")
528
899
            client["enabled"] = config.getboolean(client_name,
529
900
                                                  "enabled")
530
 
            
531
 
            # Uppercase and remove spaces from fingerprint for later
532
 
            # comparison purposes with return value from the
533
 
            # fingerprint() function
 
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(" ", ""))
534
907
            client["fingerprint"] = (section["fingerprint"].upper()
535
908
                                     .replace(" ", ""))
536
909
            if "secret" in section:
537
 
                client["secret"] = section["secret"].decode("base64")
 
910
                client["secret"] = codecs.decode(section["secret"]
 
911
                                                 .encode("utf-8"),
 
912
                                                 "base64")
538
913
            elif "secfile" in section:
539
914
                with open(os.path.expanduser(os.path.expandvars
540
915
                                             (section["secfile"])),
555
930
            client["last_approval_request"] = None
556
931
            client["last_checked_ok"] = None
557
932
            client["last_checker_status"] = -2
558
 
        
 
933
 
559
934
        return settings
560
 
    
561
 
    def __init__(self, settings, name = None, server_settings=None):
 
935
 
 
936
    def __init__(self, settings, name=None, server_settings=None):
562
937
        self.name = name
563
938
        if server_settings is None:
564
939
            server_settings = {}
566
941
        # adding all client settings
567
942
        for setting, value in settings.items():
568
943
            setattr(self, setting, value)
569
 
        
 
944
 
570
945
        if self.enabled:
571
946
            if not hasattr(self, "last_enabled"):
572
947
                self.last_enabled = datetime.datetime.utcnow()
576
951
        else:
577
952
            self.last_enabled = None
578
953
            self.expires = None
579
 
        
 
954
 
580
955
        logger.debug("Creating client %r", self.name)
 
956
        logger.debug("  Key ID: %s", self.key_id)
581
957
        logger.debug("  Fingerprint: %s", self.fingerprint)
582
958
        self.created = settings.get("created",
583
959
                                    datetime.datetime.utcnow())
584
 
        
 
960
 
585
961
        # attributes specific for this server instance
586
962
        self.checker = None
587
963
        self.checker_initiator_tag = None
593
969
        self.changedstate = multiprocessing_manager.Condition(
594
970
            multiprocessing_manager.Lock())
595
971
        self.client_structure = [attr
596
 
                                 for attr in self.__dict__.iterkeys()
 
972
                                 for attr in self.__dict__.keys()
597
973
                                 if not attr.startswith("_")]
598
974
        self.client_structure.append("client_structure")
599
 
        
 
975
 
600
976
        for name, t in inspect.getmembers(
601
977
                type(self), lambda obj: isinstance(obj, property)):
602
978
            if not name.startswith("_"):
603
979
                self.client_structure.append(name)
604
 
    
 
980
 
605
981
    # Send notice to process children that client state has changed
606
982
    def send_changedstate(self):
607
983
        with self.changedstate:
608
984
            self.changedstate.notify_all()
609
 
    
 
985
 
610
986
    def enable(self):
611
987
        """Start this client's checker and timeout hooks"""
612
988
        if getattr(self, "enabled", False):
617
993
        self.last_enabled = datetime.datetime.utcnow()
618
994
        self.init_checker()
619
995
        self.send_changedstate()
620
 
    
 
996
 
621
997
    def disable(self, quiet=True):
622
998
        """Disable this client."""
623
999
        if not getattr(self, "enabled", False):
625
1001
        if not quiet:
626
1002
            logger.info("Disabling client %s", self.name)
627
1003
        if getattr(self, "disable_initiator_tag", None) is not None:
628
 
            gobject.source_remove(self.disable_initiator_tag)
 
1004
            GLib.source_remove(self.disable_initiator_tag)
629
1005
            self.disable_initiator_tag = None
630
1006
        self.expires = None
631
1007
        if getattr(self, "checker_initiator_tag", None) is not None:
632
 
            gobject.source_remove(self.checker_initiator_tag)
 
1008
            GLib.source_remove(self.checker_initiator_tag)
633
1009
            self.checker_initiator_tag = None
634
1010
        self.stop_checker()
635
1011
        self.enabled = False
636
1012
        if not quiet:
637
1013
            self.send_changedstate()
638
 
        # Do not run this again if called by a gobject.timeout_add
 
1014
        # Do not run this again if called by a GLib.timeout_add
639
1015
        return False
640
 
    
 
1016
 
641
1017
    def __del__(self):
642
1018
        self.disable()
643
 
    
 
1019
 
644
1020
    def init_checker(self):
645
1021
        # Schedule a new checker to be started an 'interval' from now,
646
1022
        # and every interval from then on.
647
1023
        if self.checker_initiator_tag is not None:
648
 
            gobject.source_remove(self.checker_initiator_tag)
649
 
        self.checker_initiator_tag = gobject.timeout_add(
 
1024
            GLib.source_remove(self.checker_initiator_tag)
 
1025
        self.checker_initiator_tag = GLib.timeout_add(
650
1026
            int(self.interval.total_seconds() * 1000),
651
1027
            self.start_checker)
652
1028
        # Schedule a disable() when 'timeout' has passed
653
1029
        if self.disable_initiator_tag is not None:
654
 
            gobject.source_remove(self.disable_initiator_tag)
655
 
        self.disable_initiator_tag = gobject.timeout_add(
 
1030
            GLib.source_remove(self.disable_initiator_tag)
 
1031
        self.disable_initiator_tag = GLib.timeout_add(
656
1032
            int(self.timeout.total_seconds() * 1000), self.disable)
657
1033
        # Also start a new checker *right now*.
658
1034
        self.start_checker()
659
 
    
 
1035
 
660
1036
    def checker_callback(self, source, condition, connection,
661
1037
                         command):
662
1038
        """The checker has completed, so take appropriate actions."""
665
1041
        # Read return code from connection (see call_pipe)
666
1042
        returncode = connection.recv()
667
1043
        connection.close()
668
 
        
 
1044
 
669
1045
        if returncode >= 0:
670
1046
            self.last_checker_status = returncode
671
1047
            self.last_checker_signal = None
681
1057
            logger.warning("Checker for %(name)s crashed?",
682
1058
                           vars(self))
683
1059
        return False
684
 
    
 
1060
 
685
1061
    def checked_ok(self):
686
1062
        """Assert that the client has been seen, alive and well."""
687
1063
        self.last_checked_ok = datetime.datetime.utcnow()
688
1064
        self.last_checker_status = 0
689
1065
        self.last_checker_signal = None
690
1066
        self.bump_timeout()
691
 
    
 
1067
 
692
1068
    def bump_timeout(self, timeout=None):
693
1069
        """Bump up the timeout for this client."""
694
1070
        if timeout is None:
695
1071
            timeout = self.timeout
696
1072
        if self.disable_initiator_tag is not None:
697
 
            gobject.source_remove(self.disable_initiator_tag)
 
1073
            GLib.source_remove(self.disable_initiator_tag)
698
1074
            self.disable_initiator_tag = None
699
1075
        if getattr(self, "enabled", False):
700
 
            self.disable_initiator_tag = gobject.timeout_add(
 
1076
            self.disable_initiator_tag = GLib.timeout_add(
701
1077
                int(timeout.total_seconds() * 1000), self.disable)
702
1078
            self.expires = datetime.datetime.utcnow() + timeout
703
 
    
 
1079
 
704
1080
    def need_approval(self):
705
1081
        self.last_approval_request = datetime.datetime.utcnow()
706
 
    
 
1082
 
707
1083
    def start_checker(self):
708
1084
        """Start a new checker subprocess if one is not running.
709
 
        
 
1085
 
710
1086
        If a checker already exists, leave it running and do
711
1087
        nothing."""
712
1088
        # The reason for not killing a running checker is that if we
717
1093
        # checkers alone, the checker would have to take more time
718
1094
        # than 'timeout' for the client to be disabled, which is as it
719
1095
        # should be.
720
 
        
 
1096
 
721
1097
        if self.checker is not None and not self.checker.is_alive():
722
1098
            logger.warning("Checker was not alive; joining")
723
1099
            self.checker.join()
727
1103
            # Escape attributes for the shell
728
1104
            escaped_attrs = {
729
1105
                attr: re.escape(str(getattr(self, attr)))
730
 
                for attr in self.runtime_expansions }
 
1106
                for attr in self.runtime_expansions}
731
1107
            try:
732
1108
                command = self.checker_command % escaped_attrs
733
1109
            except TypeError as error:
745
1121
            # The exception is when not debugging but nevertheless
746
1122
            # running in the foreground; use the previously
747
1123
            # created wnull.
748
 
            popen_args = { "close_fds": True,
749
 
                           "shell": True,
750
 
                           "cwd": "/" }
 
1124
            popen_args = {"close_fds": True,
 
1125
                          "shell": True,
 
1126
                          "cwd": "/"}
751
1127
            if (not self.server_settings["debug"]
752
1128
                and self.server_settings["foreground"]):
753
1129
                popen_args.update({"stdout": wnull,
754
 
                                   "stderr": wnull })
755
 
            pipe = multiprocessing.Pipe(duplex = False)
 
1130
                                   "stderr": wnull})
 
1131
            pipe = multiprocessing.Pipe(duplex=False)
756
1132
            self.checker = multiprocessing.Process(
757
 
                target = call_pipe,
758
 
                args = (pipe[1], subprocess.call, command),
759
 
                kwargs = popen_args)
 
1133
                target=call_pipe,
 
1134
                args=(pipe[1], subprocess.call, command),
 
1135
                kwargs=popen_args)
760
1136
            self.checker.start()
761
 
            self.checker_callback_tag = gobject.io_add_watch(
762
 
                pipe[0].fileno(), gobject.IO_IN,
 
1137
            self.checker_callback_tag = GLib.io_add_watch(
 
1138
                pipe[0].fileno(), GLib.IO_IN,
763
1139
                self.checker_callback, pipe[0], command)
764
 
        # Re-run this periodically if run by gobject.timeout_add
 
1140
        # Re-run this periodically if run by GLib.timeout_add
765
1141
        return True
766
 
    
 
1142
 
767
1143
    def stop_checker(self):
768
1144
        """Force the checker process, if any, to stop."""
769
1145
        if self.checker_callback_tag:
770
 
            gobject.source_remove(self.checker_callback_tag)
 
1146
            GLib.source_remove(self.checker_callback_tag)
771
1147
            self.checker_callback_tag = None
772
1148
        if getattr(self, "checker", None) is None:
773
1149
            return
782
1158
                          byte_arrays=False):
783
1159
    """Decorators for marking methods of a DBusObjectWithProperties to
784
1160
    become properties on the D-Bus.
785
 
    
 
1161
 
786
1162
    The decorated method will be called with no arguments by "Get"
787
1163
    and with one argument by "Set".
788
 
    
 
1164
 
789
1165
    The parameters, where they are supported, are the same as
790
1166
    dbus.service.method, except there is only "signature", since the
791
1167
    type from Get() and the type sent to Set() is the same.
795
1171
    if byte_arrays and signature != "ay":
796
1172
        raise ValueError("Byte arrays not supported for non-'ay'"
797
1173
                         " signature {!r}".format(signature))
798
 
    
 
1174
 
799
1175
    def decorator(func):
800
1176
        func._dbus_is_property = True
801
1177
        func._dbus_interface = dbus_interface
804
1180
        func._dbus_name = func.__name__
805
1181
        if func._dbus_name.endswith("_dbus_property"):
806
1182
            func._dbus_name = func._dbus_name[:-14]
807
 
        func._dbus_get_args_options = {'byte_arrays': byte_arrays }
 
1183
        func._dbus_get_args_options = {'byte_arrays': byte_arrays}
808
1184
        return func
809
 
    
 
1185
 
810
1186
    return decorator
811
1187
 
812
1188
 
813
1189
def dbus_interface_annotations(dbus_interface):
814
1190
    """Decorator for marking functions returning interface annotations
815
 
    
 
1191
 
816
1192
    Usage:
817
 
    
 
1193
 
818
1194
    @dbus_interface_annotations("org.example.Interface")
819
1195
    def _foo(self):  # Function name does not matter
820
1196
        return {"org.freedesktop.DBus.Deprecated": "true",
821
1197
                "org.freedesktop.DBus.Property.EmitsChangedSignal":
822
1198
                    "false"}
823
1199
    """
824
 
    
 
1200
 
825
1201
    def decorator(func):
826
1202
        func._dbus_is_interface = True
827
1203
        func._dbus_interface = dbus_interface
828
1204
        func._dbus_name = dbus_interface
829
1205
        return func
830
 
    
 
1206
 
831
1207
    return decorator
832
1208
 
833
1209
 
834
1210
def dbus_annotations(annotations):
835
1211
    """Decorator to annotate D-Bus methods, signals or properties
836
1212
    Usage:
837
 
    
 
1213
 
838
1214
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
839
1215
                       "org.freedesktop.DBus.Property."
840
1216
                       "EmitsChangedSignal": "false"})
842
1218
                           access="r")
843
1219
    def Property_dbus_property(self):
844
1220
        return dbus.Boolean(False)
845
 
    
 
1221
 
846
1222
    See also the DBusObjectWithAnnotations class.
847
1223
    """
848
 
    
 
1224
 
849
1225
    def decorator(func):
850
1226
        func._dbus_annotations = annotations
851
1227
        return func
852
 
    
 
1228
 
853
1229
    return decorator
854
1230
 
855
1231
 
873
1249
 
874
1250
class DBusObjectWithAnnotations(dbus.service.Object):
875
1251
    """A D-Bus object with annotations.
876
 
    
 
1252
 
877
1253
    Classes inheriting from this can use the dbus_annotations
878
1254
    decorator to add annotations to methods or signals.
879
1255
    """
880
 
    
 
1256
 
881
1257
    @staticmethod
882
1258
    def _is_dbus_thing(thing):
883
1259
        """Returns a function testing if an attribute is a D-Bus thing
884
 
        
 
1260
 
885
1261
        If called like _is_dbus_thing("method") it returns a function
886
1262
        suitable for use as predicate to inspect.getmembers().
887
1263
        """
888
1264
        return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
889
1265
                                   False)
890
 
    
 
1266
 
891
1267
    def _get_all_dbus_things(self, thing):
892
1268
        """Returns a generator of (name, attribute) pairs
893
1269
        """
896
1272
                for cls in self.__class__.__mro__
897
1273
                for name, athing in
898
1274
                inspect.getmembers(cls, self._is_dbus_thing(thing)))
899
 
    
 
1275
 
900
1276
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
901
 
                         out_signature = "s",
902
 
                         path_keyword = 'object_path',
903
 
                         connection_keyword = 'connection')
 
1277
                         out_signature="s",
 
1278
                         path_keyword='object_path',
 
1279
                         connection_keyword='connection')
904
1280
    def Introspect(self, object_path, connection):
905
1281
        """Overloading of standard D-Bus method.
906
 
        
 
1282
 
907
1283
        Inserts annotation tags on methods and signals.
908
1284
        """
909
1285
        xmlstring = dbus.service.Object.Introspect(self, object_path,
910
1286
                                                   connection)
911
1287
        try:
912
1288
            document = xml.dom.minidom.parseString(xmlstring)
913
 
            
 
1289
 
914
1290
            for if_tag in document.getElementsByTagName("interface"):
915
1291
                # Add annotation tags
916
1292
                for typ in ("method", "signal"):
943
1319
                    if_tag.appendChild(ann_tag)
944
1320
                # Fix argument name for the Introspect method itself
945
1321
                if (if_tag.getAttribute("name")
946
 
                                == dbus.INTROSPECTABLE_IFACE):
 
1322
                    == dbus.INTROSPECTABLE_IFACE):
947
1323
                    for cn in if_tag.getElementsByTagName("method"):
948
1324
                        if cn.getAttribute("name") == "Introspect":
949
1325
                            for arg in cn.getElementsByTagName("arg"):
962
1338
 
963
1339
class DBusObjectWithProperties(DBusObjectWithAnnotations):
964
1340
    """A D-Bus object with properties.
965
 
    
 
1341
 
966
1342
    Classes inheriting from this can use the dbus_service_property
967
1343
    decorator to expose methods as D-Bus properties.  It exposes the
968
1344
    standard Get(), Set(), and GetAll() methods on the D-Bus.
969
1345
    """
970
 
    
 
1346
 
971
1347
    def _get_dbus_property(self, interface_name, property_name):
972
1348
        """Returns a bound method if one exists which is a D-Bus
973
1349
        property with the specified name and interface.
978
1354
                if (value._dbus_name == property_name
979
1355
                    and value._dbus_interface == interface_name):
980
1356
                    return value.__get__(self)
981
 
        
 
1357
 
982
1358
        # No such property
983
1359
        raise DBusPropertyNotFound("{}:{}.{}".format(
984
1360
            self.dbus_object_path, interface_name, property_name))
985
 
    
 
1361
 
986
1362
    @classmethod
987
1363
    def _get_all_interface_names(cls):
988
1364
        """Get a sequence of all interfaces supported by an object"""
991
1367
                                     for x in (inspect.getmro(cls))
992
1368
                                     for attr in dir(x))
993
1369
                if name is not None)
994
 
    
 
1370
 
995
1371
    @dbus.service.method(dbus.PROPERTIES_IFACE,
996
1372
                         in_signature="ss",
997
1373
                         out_signature="v")
1005
1381
        if not hasattr(value, "variant_level"):
1006
1382
            return value
1007
1383
        return type(value)(value, variant_level=value.variant_level+1)
1008
 
    
 
1384
 
1009
1385
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1010
1386
    def Set(self, interface_name, property_name, value):
1011
1387
        """Standard D-Bus property Set() method, see D-Bus standard.
1023
1399
            value = dbus.ByteArray(b''.join(chr(byte)
1024
1400
                                            for byte in value))
1025
1401
        prop(value)
1026
 
    
 
1402
 
1027
1403
    @dbus.service.method(dbus.PROPERTIES_IFACE,
1028
1404
                         in_signature="s",
1029
1405
                         out_signature="a{sv}")
1030
1406
    def GetAll(self, interface_name):
1031
1407
        """Standard D-Bus property GetAll() method, see D-Bus
1032
1408
        standard.
1033
 
        
 
1409
 
1034
1410
        Note: Will not include properties with access="write".
1035
1411
        """
1036
1412
        properties = {}
1047
1423
                properties[name] = value
1048
1424
                continue
1049
1425
            properties[name] = type(value)(
1050
 
                value, variant_level = value.variant_level + 1)
 
1426
                value, variant_level=value.variant_level + 1)
1051
1427
        return dbus.Dictionary(properties, signature="sv")
1052
 
    
 
1428
 
1053
1429
    @dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1054
1430
    def PropertiesChanged(self, interface_name, changed_properties,
1055
1431
                          invalidated_properties):
1057
1433
        standard.
1058
1434
        """
1059
1435
        pass
1060
 
    
 
1436
 
1061
1437
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1062
1438
                         out_signature="s",
1063
1439
                         path_keyword='object_path',
1064
1440
                         connection_keyword='connection')
1065
1441
    def Introspect(self, object_path, connection):
1066
1442
        """Overloading of standard D-Bus method.
1067
 
        
 
1443
 
1068
1444
        Inserts property tags and interface annotation tags.
1069
1445
        """
1070
1446
        xmlstring = DBusObjectWithAnnotations.Introspect(self,
1072
1448
                                                         connection)
1073
1449
        try:
1074
1450
            document = xml.dom.minidom.parseString(xmlstring)
1075
 
            
 
1451
 
1076
1452
            def make_tag(document, name, prop):
1077
1453
                e = document.createElement("property")
1078
1454
                e.setAttribute("name", name)
1079
1455
                e.setAttribute("type", prop._dbus_signature)
1080
1456
                e.setAttribute("access", prop._dbus_access)
1081
1457
                return e
1082
 
            
 
1458
 
1083
1459
            for if_tag in document.getElementsByTagName("interface"):
1084
1460
                # Add property tags
1085
1461
                for tag in (make_tag(document, name, prop)
1127
1503
                         exc_info=error)
1128
1504
        return xmlstring
1129
1505
 
 
1506
 
1130
1507
try:
1131
1508
    dbus.OBJECT_MANAGER_IFACE
1132
1509
except AttributeError:
1133
1510
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1134
1511
 
 
1512
 
1135
1513
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1136
1514
    """A D-Bus object with an ObjectManager.
1137
 
    
 
1515
 
1138
1516
    Classes inheriting from this exposes the standard
1139
1517
    GetManagedObjects call and the InterfacesAdded and
1140
1518
    InterfacesRemoved signals on the standard
1141
1519
    "org.freedesktop.DBus.ObjectManager" interface.
1142
 
    
 
1520
 
1143
1521
    Note: No signals are sent automatically; they must be sent
1144
1522
    manually.
1145
1523
    """
1146
1524
    @dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1147
 
                         out_signature = "a{oa{sa{sv}}}")
 
1525
                         out_signature="a{oa{sa{sv}}}")
1148
1526
    def GetManagedObjects(self):
1149
1527
        """This function must be overridden"""
1150
1528
        raise NotImplementedError()
1151
 
    
 
1529
 
1152
1530
    @dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1153
 
                         signature = "oa{sa{sv}}")
 
1531
                         signature="oa{sa{sv}}")
1154
1532
    def InterfacesAdded(self, object_path, interfaces_and_properties):
1155
1533
        pass
1156
 
    
1157
 
    @dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
 
1534
 
 
1535
    @dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1158
1536
    def InterfacesRemoved(self, object_path, interfaces):
1159
1537
        pass
1160
 
    
 
1538
 
1161
1539
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1162
 
                         out_signature = "s",
1163
 
                         path_keyword = 'object_path',
1164
 
                         connection_keyword = 'connection')
 
1540
                         out_signature="s",
 
1541
                         path_keyword='object_path',
 
1542
                         connection_keyword='connection')
1165
1543
    def Introspect(self, object_path, connection):
1166
1544
        """Overloading of standard D-Bus method.
1167
 
        
 
1545
 
1168
1546
        Override return argument name of GetManagedObjects to be
1169
1547
        "objpath_interfaces_and_properties"
1170
1548
        """
1173
1551
                                                         connection)
1174
1552
        try:
1175
1553
            document = xml.dom.minidom.parseString(xmlstring)
1176
 
            
 
1554
 
1177
1555
            for if_tag in document.getElementsByTagName("interface"):
1178
1556
                # Fix argument name for the GetManagedObjects method
1179
1557
                if (if_tag.getAttribute("name")
1180
 
                                == dbus.OBJECT_MANAGER_IFACE):
 
1558
                    == dbus.OBJECT_MANAGER_IFACE):
1181
1559
                    for cn in if_tag.getElementsByTagName("method"):
1182
1560
                        if (cn.getAttribute("name")
1183
1561
                            == "GetManagedObjects"):
1193
1571
        except (AttributeError, xml.dom.DOMException,
1194
1572
                xml.parsers.expat.ExpatError) as error:
1195
1573
            logger.error("Failed to override Introspection method",
1196
 
                         exc_info = error)
 
1574
                         exc_info=error)
1197
1575
        return xmlstring
1198
1576
 
 
1577
 
1199
1578
def datetime_to_dbus(dt, variant_level=0):
1200
1579
    """Convert a UTC datetime.datetime() to a D-Bus type."""
1201
1580
    if dt is None:
1202
 
        return dbus.String("", variant_level = variant_level)
 
1581
        return dbus.String("", variant_level=variant_level)
1203
1582
    return dbus.String(dt.isoformat(), variant_level=variant_level)
1204
1583
 
1205
1584
 
1208
1587
    dbus.service.Object, it will add alternate D-Bus attributes with
1209
1588
    interface names according to the "alt_interface_names" mapping.
1210
1589
    Usage:
1211
 
    
 
1590
 
1212
1591
    @alternate_dbus_interfaces({"org.example.Interface":
1213
1592
                                    "net.example.AlternateInterface"})
1214
1593
    class SampleDBusObject(dbus.service.Object):
1215
1594
        @dbus.service.method("org.example.Interface")
1216
1595
        def SampleDBusMethod():
1217
1596
            pass
1218
 
    
 
1597
 
1219
1598
    The above "SampleDBusMethod" on "SampleDBusObject" will be
1220
1599
    reachable via two interfaces: "org.example.Interface" and
1221
1600
    "net.example.AlternateInterface", the latter of which will have
1222
1601
    its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1223
1602
    "true", unless "deprecate" is passed with a False value.
1224
 
    
 
1603
 
1225
1604
    This works for methods and signals, and also for D-Bus properties
1226
1605
    (from DBusObjectWithProperties) and interfaces (from the
1227
1606
    dbus_interface_annotations decorator).
1228
1607
    """
1229
 
    
 
1608
 
1230
1609
    def wrapper(cls):
1231
1610
        for orig_interface_name, alt_interface_name in (
1232
1611
                alt_interface_names.items()):
1247
1626
                interface_names.add(alt_interface)
1248
1627
                # Is this a D-Bus signal?
1249
1628
                if getattr(attribute, "_dbus_is_signal", False):
 
1629
                    # Extract the original non-method undecorated
 
1630
                    # function by black magic
1250
1631
                    if sys.version_info.major == 2:
1251
 
                        # Extract the original non-method undecorated
1252
 
                        # function by black magic
1253
1632
                        nonmethod_func = (dict(
1254
1633
                            zip(attribute.func_code.co_freevars,
1255
1634
                                attribute.__closure__))
1256
1635
                                          ["func"].cell_contents)
1257
1636
                    else:
1258
 
                        nonmethod_func = attribute
 
1637
                        nonmethod_func = (dict(
 
1638
                            zip(attribute.__code__.co_freevars,
 
1639
                                attribute.__closure__))
 
1640
                                          ["func"].cell_contents)
1259
1641
                    # Create a new, but exactly alike, function
1260
1642
                    # object, and decorate it to be a new D-Bus signal
1261
1643
                    # with the alternate D-Bus interface name
1262
 
                    if sys.version_info.major == 2:
1263
 
                        new_function = types.FunctionType(
1264
 
                            nonmethod_func.func_code,
1265
 
                            nonmethod_func.func_globals,
1266
 
                            nonmethod_func.func_name,
1267
 
                            nonmethod_func.func_defaults,
1268
 
                            nonmethod_func.func_closure)
1269
 
                    else:
1270
 
                        new_function = types.FunctionType(
1271
 
                            nonmethod_func.__code__,
1272
 
                            nonmethod_func.__globals__,
1273
 
                            nonmethod_func.__name__,
1274
 
                            nonmethod_func.__defaults__,
1275
 
                            nonmethod_func.__closure__)
 
1644
                    new_function = copy_function(nonmethod_func)
1276
1645
                    new_function = (dbus.service.signal(
1277
1646
                        alt_interface,
1278
1647
                        attribute._dbus_signature)(new_function))
1282
1651
                            attribute._dbus_annotations)
1283
1652
                    except AttributeError:
1284
1653
                        pass
 
1654
 
1285
1655
                    # Define a creator of a function to call both the
1286
1656
                    # original and alternate functions, so both the
1287
1657
                    # original and alternate signals gets sent when
1290
1660
                        """This function is a scope container to pass
1291
1661
                        func1 and func2 to the "call_both" function
1292
1662
                        outside of its arguments"""
1293
 
                        
 
1663
 
1294
1664
                        @functools.wraps(func2)
1295
1665
                        def call_both(*args, **kwargs):
1296
1666
                            """This function will emit two D-Bus
1297
1667
                            signals by calling func1 and func2"""
1298
1668
                            func1(*args, **kwargs)
1299
1669
                            func2(*args, **kwargs)
1300
 
                        # Make wrapper function look like a D-Bus signal
 
1670
                        # Make wrapper function look like a D-Bus
 
1671
                        # signal
1301
1672
                        for name, attr in inspect.getmembers(func2):
1302
1673
                            if name.startswith("_dbus_"):
1303
1674
                                setattr(call_both, name, attr)
1304
 
                        
 
1675
 
1305
1676
                        return call_both
1306
1677
                    # Create the "call_both" function and add it to
1307
1678
                    # the class
1317
1688
                            alt_interface,
1318
1689
                            attribute._dbus_in_signature,
1319
1690
                            attribute._dbus_out_signature)
1320
 
                        (types.FunctionType(attribute.func_code,
1321
 
                                            attribute.func_globals,
1322
 
                                            attribute.func_name,
1323
 
                                            attribute.func_defaults,
1324
 
                                            attribute.func_closure)))
 
1691
                        (copy_function(attribute)))
1325
1692
                    # Copy annotations, if any
1326
1693
                    try:
1327
1694
                        attr[attrname]._dbus_annotations = dict(
1339
1706
                        attribute._dbus_access,
1340
1707
                        attribute._dbus_get_args_options
1341
1708
                        ["byte_arrays"])
1342
 
                                      (types.FunctionType(
1343
 
                                          attribute.func_code,
1344
 
                                          attribute.func_globals,
1345
 
                                          attribute.func_name,
1346
 
                                          attribute.func_defaults,
1347
 
                                          attribute.func_closure)))
 
1709
                                      (copy_function(attribute)))
1348
1710
                    # Copy annotations, if any
1349
1711
                    try:
1350
1712
                        attr[attrname]._dbus_annotations = dict(
1359
1721
                    # to the class.
1360
1722
                    attr[attrname] = (
1361
1723
                        dbus_interface_annotations(alt_interface)
1362
 
                        (types.FunctionType(attribute.func_code,
1363
 
                                            attribute.func_globals,
1364
 
                                            attribute.func_name,
1365
 
                                            attribute.func_defaults,
1366
 
                                            attribute.func_closure)))
 
1724
                        (copy_function(attribute)))
1367
1725
            if deprecate:
1368
1726
                # Deprecate all alternate interfaces
1369
 
                iname="_AlternateDBusNames_interface_annotation{}"
 
1727
                iname = "_AlternateDBusNames_interface_annotation{}"
1370
1728
                for interface_name in interface_names:
1371
 
                    
 
1729
 
1372
1730
                    @dbus_interface_annotations(interface_name)
1373
1731
                    def func(self):
1374
 
                        return { "org.freedesktop.DBus.Deprecated":
1375
 
                                 "true" }
 
1732
                        return {"org.freedesktop.DBus.Deprecated":
 
1733
                                "true"}
1376
1734
                    # Find an unused name
1377
1735
                    for aname in (iname.format(i)
1378
1736
                                  for i in itertools.count()):
1382
1740
            if interface_names:
1383
1741
                # Replace the class with a new subclass of it with
1384
1742
                # methods, signals, etc. as created above.
1385
 
                cls = type(b"{}Alternate".format(cls.__name__),
1386
 
                           (cls, ), attr)
 
1743
                if sys.version_info.major == 2:
 
1744
                    cls = type(b"{}Alternate".format(cls.__name__),
 
1745
                               (cls, ), attr)
 
1746
                else:
 
1747
                    cls = type("{}Alternate".format(cls.__name__),
 
1748
                               (cls, ), attr)
1387
1749
        return cls
1388
 
    
 
1750
 
1389
1751
    return wrapper
1390
1752
 
1391
1753
 
1393
1755
                            "se.bsnet.fukt.Mandos"})
1394
1756
class ClientDBus(Client, DBusObjectWithProperties):
1395
1757
    """A Client class using D-Bus
1396
 
    
 
1758
 
1397
1759
    Attributes:
1398
1760
    dbus_object_path: dbus.ObjectPath
1399
1761
    bus: dbus.SystemBus()
1400
1762
    """
1401
 
    
 
1763
 
1402
1764
    runtime_expansions = (Client.runtime_expansions
1403
1765
                          + ("dbus_object_path", ))
1404
 
    
 
1766
 
1405
1767
    _interface = "se.recompile.Mandos.Client"
1406
 
    
 
1768
 
1407
1769
    # dbus.service.Object doesn't use super(), so we can't either.
1408
 
    
1409
 
    def __init__(self, bus = None, *args, **kwargs):
 
1770
 
 
1771
    def __init__(self, bus=None, *args, **kwargs):
1410
1772
        self.bus = bus
1411
1773
        Client.__init__(self, *args, **kwargs)
1412
1774
        # Only now, when this client is initialized, can it show up on
1418
1780
            "/clients/" + client_object_name)
1419
1781
        DBusObjectWithProperties.__init__(self, self.bus,
1420
1782
                                          self.dbus_object_path)
1421
 
    
 
1783
 
1422
1784
    def notifychangeproperty(transform_func, dbus_name,
1423
1785
                             type_func=lambda x: x,
1424
1786
                             variant_level=1,
1426
1788
                             _interface=_interface):
1427
1789
        """ Modify a variable so that it's a property which announces
1428
1790
        its changes to DBus.
1429
 
        
 
1791
 
1430
1792
        transform_fun: Function that takes a value and a variant_level
1431
1793
                       and transforms it to a D-Bus type.
1432
1794
        dbus_name: D-Bus name of the variable
1435
1797
        variant_level: D-Bus variant level.  Default: 1
1436
1798
        """
1437
1799
        attrname = "_{}".format(dbus_name)
1438
 
        
 
1800
 
1439
1801
        def setter(self, value):
1440
1802
            if hasattr(self, "dbus_object_path"):
1441
1803
                if (not hasattr(self, attrname) or
1448
1810
                    else:
1449
1811
                        dbus_value = transform_func(
1450
1812
                            type_func(value),
1451
 
                            variant_level = variant_level)
 
1813
                            variant_level=variant_level)
1452
1814
                        self.PropertyChanged(dbus.String(dbus_name),
1453
1815
                                             dbus_value)
1454
1816
                        self.PropertiesChanged(
1455
1817
                            _interface,
1456
 
                            dbus.Dictionary({ dbus.String(dbus_name):
1457
 
                                              dbus_value }),
 
1818
                            dbus.Dictionary({dbus.String(dbus_name):
 
1819
                                             dbus_value}),
1458
1820
                            dbus.Array())
1459
1821
            setattr(self, attrname, value)
1460
 
        
 
1822
 
1461
1823
        return property(lambda self: getattr(self, attrname), setter)
1462
 
    
 
1824
 
1463
1825
    expires = notifychangeproperty(datetime_to_dbus, "Expires")
1464
1826
    approvals_pending = notifychangeproperty(dbus.Boolean,
1465
1827
                                             "ApprovalPending",
1466
 
                                             type_func = bool)
 
1828
                                             type_func=bool)
1467
1829
    enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1468
1830
    last_enabled = notifychangeproperty(datetime_to_dbus,
1469
1831
                                        "LastEnabled")
1470
1832
    checker = notifychangeproperty(
1471
1833
        dbus.Boolean, "CheckerRunning",
1472
 
        type_func = lambda checker: checker is not None)
 
1834
        type_func=lambda checker: checker is not None)
1473
1835
    last_checked_ok = notifychangeproperty(datetime_to_dbus,
1474
1836
                                           "LastCheckedOK")
1475
1837
    last_checker_status = notifychangeproperty(dbus.Int16,
1480
1842
                                               "ApprovedByDefault")
1481
1843
    approval_delay = notifychangeproperty(
1482
1844
        dbus.UInt64, "ApprovalDelay",
1483
 
        type_func = lambda td: td.total_seconds() * 1000)
 
1845
        type_func=lambda td: td.total_seconds() * 1000)
1484
1846
    approval_duration = notifychangeproperty(
1485
1847
        dbus.UInt64, "ApprovalDuration",
1486
 
        type_func = lambda td: td.total_seconds() * 1000)
 
1848
        type_func=lambda td: td.total_seconds() * 1000)
1487
1849
    host = notifychangeproperty(dbus.String, "Host")
1488
1850
    timeout = notifychangeproperty(
1489
1851
        dbus.UInt64, "Timeout",
1490
 
        type_func = lambda td: td.total_seconds() * 1000)
 
1852
        type_func=lambda td: td.total_seconds() * 1000)
1491
1853
    extended_timeout = notifychangeproperty(
1492
1854
        dbus.UInt64, "ExtendedTimeout",
1493
 
        type_func = lambda td: td.total_seconds() * 1000)
 
1855
        type_func=lambda td: td.total_seconds() * 1000)
1494
1856
    interval = notifychangeproperty(
1495
1857
        dbus.UInt64, "Interval",
1496
 
        type_func = lambda td: td.total_seconds() * 1000)
 
1858
        type_func=lambda td: td.total_seconds() * 1000)
1497
1859
    checker_command = notifychangeproperty(dbus.String, "Checker")
1498
1860
    secret = notifychangeproperty(dbus.ByteArray, "Secret",
1499
1861
                                  invalidate_only=True)
1500
 
    
 
1862
 
1501
1863
    del notifychangeproperty
1502
 
    
 
1864
 
1503
1865
    def __del__(self, *args, **kwargs):
1504
1866
        try:
1505
1867
            self.remove_from_connection()
1508
1870
        if hasattr(DBusObjectWithProperties, "__del__"):
1509
1871
            DBusObjectWithProperties.__del__(self, *args, **kwargs)
1510
1872
        Client.__del__(self, *args, **kwargs)
1511
 
    
 
1873
 
1512
1874
    def checker_callback(self, source, condition,
1513
1875
                         connection, command, *args, **kwargs):
1514
1876
        ret = Client.checker_callback(self, source, condition,
1530
1892
                                      | self.last_checker_signal),
1531
1893
                                  dbus.String(command))
1532
1894
        return ret
1533
 
    
 
1895
 
1534
1896
    def start_checker(self, *args, **kwargs):
1535
1897
        old_checker_pid = getattr(self.checker, "pid", None)
1536
1898
        r = Client.start_checker(self, *args, **kwargs)
1540
1902
            # Emit D-Bus signal
1541
1903
            self.CheckerStarted(self.current_checker_command)
1542
1904
        return r
1543
 
    
 
1905
 
1544
1906
    def _reset_approved(self):
1545
1907
        self.approved = None
1546
1908
        return False
1547
 
    
 
1909
 
1548
1910
    def approve(self, value=True):
1549
1911
        self.approved = value
1550
 
        gobject.timeout_add(int(self.approval_duration.total_seconds()
1551
 
                                * 1000), self._reset_approved)
 
1912
        GLib.timeout_add(int(self.approval_duration.total_seconds()
 
1913
                             * 1000), self._reset_approved)
1552
1914
        self.send_changedstate()
1553
 
    
1554
 
    ## D-Bus methods, signals & properties
1555
 
    
1556
 
    ## Interfaces
1557
 
    
1558
 
    ## Signals
1559
 
    
 
1915
 
 
1916
    #  D-Bus methods, signals & properties
 
1917
 
 
1918
    #  Interfaces
 
1919
 
 
1920
    #  Signals
 
1921
 
1560
1922
    # CheckerCompleted - signal
1561
1923
    @dbus.service.signal(_interface, signature="nxs")
1562
1924
    def CheckerCompleted(self, exitcode, waitstatus, command):
1563
1925
        "D-Bus signal"
1564
1926
        pass
1565
 
    
 
1927
 
1566
1928
    # CheckerStarted - signal
1567
1929
    @dbus.service.signal(_interface, signature="s")
1568
1930
    def CheckerStarted(self, command):
1569
1931
        "D-Bus signal"
1570
1932
        pass
1571
 
    
 
1933
 
1572
1934
    # PropertyChanged - signal
1573
1935
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1574
1936
    @dbus.service.signal(_interface, signature="sv")
1575
1937
    def PropertyChanged(self, property, value):
1576
1938
        "D-Bus signal"
1577
1939
        pass
1578
 
    
 
1940
 
1579
1941
    # GotSecret - signal
1580
1942
    @dbus.service.signal(_interface)
1581
1943
    def GotSecret(self):
1584
1946
        server to mandos-client
1585
1947
        """
1586
1948
        pass
1587
 
    
 
1949
 
1588
1950
    # Rejected - signal
1589
1951
    @dbus.service.signal(_interface, signature="s")
1590
1952
    def Rejected(self, reason):
1591
1953
        "D-Bus signal"
1592
1954
        pass
1593
 
    
 
1955
 
1594
1956
    # NeedApproval - signal
1595
1957
    @dbus.service.signal(_interface, signature="tb")
1596
1958
    def NeedApproval(self, timeout, default):
1597
1959
        "D-Bus signal"
1598
1960
        return self.need_approval()
1599
 
    
1600
 
    ## Methods
1601
 
    
 
1961
 
 
1962
    #  Methods
 
1963
 
1602
1964
    # Approve - method
1603
1965
    @dbus.service.method(_interface, in_signature="b")
1604
1966
    def Approve(self, value):
1605
1967
        self.approve(value)
1606
 
    
 
1968
 
1607
1969
    # CheckedOK - method
1608
1970
    @dbus.service.method(_interface)
1609
1971
    def CheckedOK(self):
1610
1972
        self.checked_ok()
1611
 
    
 
1973
 
1612
1974
    # Enable - method
1613
1975
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1614
1976
    @dbus.service.method(_interface)
1615
1977
    def Enable(self):
1616
1978
        "D-Bus method"
1617
1979
        self.enable()
1618
 
    
 
1980
 
1619
1981
    # StartChecker - method
1620
1982
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1621
1983
    @dbus.service.method(_interface)
1622
1984
    def StartChecker(self):
1623
1985
        "D-Bus method"
1624
1986
        self.start_checker()
1625
 
    
 
1987
 
1626
1988
    # Disable - method
1627
1989
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1628
1990
    @dbus.service.method(_interface)
1629
1991
    def Disable(self):
1630
1992
        "D-Bus method"
1631
1993
        self.disable()
1632
 
    
 
1994
 
1633
1995
    # StopChecker - method
1634
1996
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1635
1997
    @dbus.service.method(_interface)
1636
1998
    def StopChecker(self):
1637
1999
        self.stop_checker()
1638
 
    
1639
 
    ## Properties
1640
 
    
 
2000
 
 
2001
    #  Properties
 
2002
 
1641
2003
    # ApprovalPending - property
1642
2004
    @dbus_service_property(_interface, signature="b", access="read")
1643
2005
    def ApprovalPending_dbus_property(self):
1644
2006
        return dbus.Boolean(bool(self.approvals_pending))
1645
 
    
 
2007
 
1646
2008
    # ApprovedByDefault - property
1647
2009
    @dbus_service_property(_interface,
1648
2010
                           signature="b",
1651
2013
        if value is None:       # get
1652
2014
            return dbus.Boolean(self.approved_by_default)
1653
2015
        self.approved_by_default = bool(value)
1654
 
    
 
2016
 
1655
2017
    # ApprovalDelay - property
1656
2018
    @dbus_service_property(_interface,
1657
2019
                           signature="t",
1661
2023
            return dbus.UInt64(self.approval_delay.total_seconds()
1662
2024
                               * 1000)
1663
2025
        self.approval_delay = datetime.timedelta(0, 0, 0, value)
1664
 
    
 
2026
 
1665
2027
    # ApprovalDuration - property
1666
2028
    @dbus_service_property(_interface,
1667
2029
                           signature="t",
1671
2033
            return dbus.UInt64(self.approval_duration.total_seconds()
1672
2034
                               * 1000)
1673
2035
        self.approval_duration = datetime.timedelta(0, 0, 0, value)
1674
 
    
 
2036
 
1675
2037
    # Name - property
1676
2038
    @dbus_annotations(
1677
2039
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1678
2040
    @dbus_service_property(_interface, signature="s", access="read")
1679
2041
    def Name_dbus_property(self):
1680
2042
        return dbus.String(self.name)
1681
 
    
 
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
 
1682
2051
    # Fingerprint - property
1683
2052
    @dbus_annotations(
1684
2053
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1685
2054
    @dbus_service_property(_interface, signature="s", access="read")
1686
2055
    def Fingerprint_dbus_property(self):
1687
2056
        return dbus.String(self.fingerprint)
1688
 
    
 
2057
 
1689
2058
    # Host - property
1690
2059
    @dbus_service_property(_interface,
1691
2060
                           signature="s",
1694
2063
        if value is None:       # get
1695
2064
            return dbus.String(self.host)
1696
2065
        self.host = str(value)
1697
 
    
 
2066
 
1698
2067
    # Created - property
1699
2068
    @dbus_annotations(
1700
2069
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1701
2070
    @dbus_service_property(_interface, signature="s", access="read")
1702
2071
    def Created_dbus_property(self):
1703
2072
        return datetime_to_dbus(self.created)
1704
 
    
 
2073
 
1705
2074
    # LastEnabled - property
1706
2075
    @dbus_service_property(_interface, signature="s", access="read")
1707
2076
    def LastEnabled_dbus_property(self):
1708
2077
        return datetime_to_dbus(self.last_enabled)
1709
 
    
 
2078
 
1710
2079
    # Enabled - property
1711
2080
    @dbus_service_property(_interface,
1712
2081
                           signature="b",
1718
2087
            self.enable()
1719
2088
        else:
1720
2089
            self.disable()
1721
 
    
 
2090
 
1722
2091
    # LastCheckedOK - property
1723
2092
    @dbus_service_property(_interface,
1724
2093
                           signature="s",
1728
2097
            self.checked_ok()
1729
2098
            return
1730
2099
        return datetime_to_dbus(self.last_checked_ok)
1731
 
    
 
2100
 
1732
2101
    # LastCheckerStatus - property
1733
2102
    @dbus_service_property(_interface, signature="n", access="read")
1734
2103
    def LastCheckerStatus_dbus_property(self):
1735
2104
        return dbus.Int16(self.last_checker_status)
1736
 
    
 
2105
 
1737
2106
    # Expires - property
1738
2107
    @dbus_service_property(_interface, signature="s", access="read")
1739
2108
    def Expires_dbus_property(self):
1740
2109
        return datetime_to_dbus(self.expires)
1741
 
    
 
2110
 
1742
2111
    # LastApprovalRequest - property
1743
2112
    @dbus_service_property(_interface, signature="s", access="read")
1744
2113
    def LastApprovalRequest_dbus_property(self):
1745
2114
        return datetime_to_dbus(self.last_approval_request)
1746
 
    
 
2115
 
1747
2116
    # Timeout - property
1748
2117
    @dbus_service_property(_interface,
1749
2118
                           signature="t",
1764
2133
                if (getattr(self, "disable_initiator_tag", None)
1765
2134
                    is None):
1766
2135
                    return
1767
 
                gobject.source_remove(self.disable_initiator_tag)
1768
 
                self.disable_initiator_tag = gobject.timeout_add(
 
2136
                GLib.source_remove(self.disable_initiator_tag)
 
2137
                self.disable_initiator_tag = GLib.timeout_add(
1769
2138
                    int((self.expires - now).total_seconds() * 1000),
1770
2139
                    self.disable)
1771
 
    
 
2140
 
1772
2141
    # ExtendedTimeout - property
1773
2142
    @dbus_service_property(_interface,
1774
2143
                           signature="t",
1778
2147
            return dbus.UInt64(self.extended_timeout.total_seconds()
1779
2148
                               * 1000)
1780
2149
        self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1781
 
    
 
2150
 
1782
2151
    # Interval - property
1783
2152
    @dbus_service_property(_interface,
1784
2153
                           signature="t",
1791
2160
            return
1792
2161
        if self.enabled:
1793
2162
            # Reschedule checker run
1794
 
            gobject.source_remove(self.checker_initiator_tag)
1795
 
            self.checker_initiator_tag = gobject.timeout_add(
 
2163
            GLib.source_remove(self.checker_initiator_tag)
 
2164
            self.checker_initiator_tag = GLib.timeout_add(
1796
2165
                value, self.start_checker)
1797
 
            self.start_checker() # Start one now, too
1798
 
    
 
2166
            self.start_checker()  # Start one now, too
 
2167
 
1799
2168
    # Checker - property
1800
2169
    @dbus_service_property(_interface,
1801
2170
                           signature="s",
1804
2173
        if value is None:       # get
1805
2174
            return dbus.String(self.checker_command)
1806
2175
        self.checker_command = str(value)
1807
 
    
 
2176
 
1808
2177
    # CheckerRunning - property
1809
2178
    @dbus_service_property(_interface,
1810
2179
                           signature="b",
1816
2185
            self.start_checker()
1817
2186
        else:
1818
2187
            self.stop_checker()
1819
 
    
 
2188
 
1820
2189
    # ObjectPath - property
1821
2190
    @dbus_annotations(
1822
2191
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
1823
2192
         "org.freedesktop.DBus.Deprecated": "true"})
1824
2193
    @dbus_service_property(_interface, signature="o", access="read")
1825
2194
    def ObjectPath_dbus_property(self):
1826
 
        return self.dbus_object_path # is already a dbus.ObjectPath
1827
 
    
 
2195
        return self.dbus_object_path  # is already a dbus.ObjectPath
 
2196
 
1828
2197
    # Secret = property
1829
2198
    @dbus_annotations(
1830
2199
        {"org.freedesktop.DBus.Property.EmitsChangedSignal":
1835
2204
                           byte_arrays=True)
1836
2205
    def Secret_dbus_property(self, value):
1837
2206
        self.secret = bytes(value)
1838
 
    
 
2207
 
1839
2208
    del _interface
1840
2209
 
1841
2210
 
1842
2211
class ProxyClient(object):
1843
 
    def __init__(self, child_pipe, fpr, address):
 
2212
    def __init__(self, child_pipe, key_id, fpr, address):
1844
2213
        self._pipe = child_pipe
1845
 
        self._pipe.send(('init', fpr, address))
 
2214
        self._pipe.send(('init', key_id, fpr, address))
1846
2215
        if not self._pipe.recv():
1847
 
            raise KeyError(fpr)
1848
 
    
 
2216
            raise KeyError(key_id or fpr)
 
2217
 
1849
2218
    def __getattribute__(self, name):
1850
2219
        if name == '_pipe':
1851
2220
            return super(ProxyClient, self).__getattribute__(name)
1854
2223
        if data[0] == 'data':
1855
2224
            return data[1]
1856
2225
        if data[0] == 'function':
1857
 
            
 
2226
 
1858
2227
            def func(*args, **kwargs):
1859
2228
                self._pipe.send(('funcall', name, args, kwargs))
1860
2229
                return self._pipe.recv()[1]
1861
 
            
 
2230
 
1862
2231
            return func
1863
 
    
 
2232
 
1864
2233
    def __setattr__(self, name, value):
1865
2234
        if name == '_pipe':
1866
2235
            return super(ProxyClient, self).__setattr__(name, value)
1869
2238
 
1870
2239
class ClientHandler(socketserver.BaseRequestHandler, object):
1871
2240
    """A class to handle client connections.
1872
 
    
 
2241
 
1873
2242
    Instantiated once for each connection to handle it.
1874
2243
    Note: This will run in its own forked process."""
1875
 
    
 
2244
 
1876
2245
    def handle(self):
1877
2246
        with contextlib.closing(self.server.child_pipe) as child_pipe:
1878
2247
            logger.info("TCP connection from: %s",
1879
2248
                        str(self.client_address))
1880
2249
            logger.debug("Pipe FD: %d",
1881
2250
                         self.server.child_pipe.fileno())
1882
 
            
1883
 
            session = gnutls.connection.ClientSession(
1884
 
                self.request, gnutls.connection .X509Credentials())
1885
 
            
1886
 
            # Note: gnutls.connection.X509Credentials is really a
1887
 
            # generic GnuTLS certificate credentials object so long as
1888
 
            # no X.509 keys are added to it.  Therefore, we can use it
1889
 
            # here despite using OpenPGP certificates.
1890
 
            
1891
 
            #priority = ':'.join(("NONE", "+VERS-TLS1.1",
1892
 
            #                      "+AES-256-CBC", "+SHA1",
1893
 
            #                      "+COMP-NULL", "+CTYPE-OPENPGP",
1894
 
            #                      "+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"))
1895
2258
            # Use a fallback default, since this MUST be set.
1896
2259
            priority = self.server.gnutls_priority
1897
2260
            if priority is None:
1898
2261
                priority = "NORMAL"
1899
 
            gnutls.library.functions.gnutls_priority_set_direct(
1900
 
                session._c_object, priority, None)
1901
 
            
 
2262
            gnutls.priority_set_direct(session._c_object,
 
2263
                                       priority.encode("utf-8"),
 
2264
                                       None)
 
2265
 
1902
2266
            # Start communication using the Mandos protocol
1903
2267
            # Get protocol number
1904
2268
            line = self.request.makefile().readline()
1909
2273
            except (ValueError, IndexError, RuntimeError) as error:
1910
2274
                logger.error("Unknown protocol version: %s", error)
1911
2275
                return
1912
 
            
 
2276
 
1913
2277
            # Start GnuTLS connection
1914
2278
            try:
1915
2279
                session.handshake()
1916
 
            except gnutls.errors.GNUTLSError as error:
 
2280
            except gnutls.Error as error:
1917
2281
                logger.warning("Handshake failed: %s", error)
1918
2282
                # Do not run session.bye() here: the session is not
1919
2283
                # established.  Just abandon the request.
1920
2284
                return
1921
2285
            logger.debug("Handshake succeeded")
1922
 
            
 
2286
 
1923
2287
            approval_required = False
1924
2288
            try:
1925
 
                try:
1926
 
                    fpr = self.fingerprint(
1927
 
                        self.peer_certificate(session))
1928
 
                except (TypeError,
1929
 
                        gnutls.errors.GNUTLSError) as error:
1930
 
                    logger.warning("Bad certificate: %s", error)
1931
 
                    return
1932
 
                logger.debug("Fingerprint: %s", fpr)
1933
 
                
1934
 
                try:
1935
 
                    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,
1936
2311
                                         self.client_address)
1937
2312
                except KeyError:
1938
2313
                    return
1939
 
                
 
2314
 
1940
2315
                if client.approval_delay:
1941
2316
                    delay = client.approval_delay
1942
2317
                    client.approvals_pending += 1
1943
2318
                    approval_required = True
1944
 
                
 
2319
 
1945
2320
                while True:
1946
2321
                    if not client.enabled:
1947
2322
                        logger.info("Client %s is disabled",
1950
2325
                            # Emit D-Bus signal
1951
2326
                            client.Rejected("Disabled")
1952
2327
                        return
1953
 
                    
 
2328
 
1954
2329
                    if client.approved or not client.approval_delay:
1955
 
                        #We are approved or approval is disabled
 
2330
                        # We are approved or approval is disabled
1956
2331
                        break
1957
2332
                    elif client.approved is None:
1958
2333
                        logger.info("Client %s needs approval",
1969
2344
                            # Emit D-Bus signal
1970
2345
                            client.Rejected("Denied")
1971
2346
                        return
1972
 
                    
1973
 
                    #wait until timeout or approved
 
2347
 
 
2348
                    # wait until timeout or approved
1974
2349
                    time = datetime.datetime.now()
1975
2350
                    client.changedstate.acquire()
1976
2351
                    client.changedstate.wait(delay.total_seconds())
1989
2364
                            break
1990
2365
                    else:
1991
2366
                        delay -= time2 - time
1992
 
                
1993
 
                sent_size = 0
1994
 
                while sent_size < len(client.secret):
1995
 
                    try:
1996
 
                        sent = session.send(client.secret[sent_size:])
1997
 
                    except gnutls.errors.GNUTLSError as error:
1998
 
                        logger.warning("gnutls send failed",
1999
 
                                       exc_info=error)
2000
 
                        return
2001
 
                    logger.debug("Sent: %d, remaining: %d", sent,
2002
 
                                 len(client.secret) - (sent_size
2003
 
                                                       + sent))
2004
 
                    sent_size += sent
2005
 
                
 
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
 
2006
2375
                logger.info("Sending secret to %s", client.name)
2007
2376
                # bump the timeout using extended_timeout
2008
2377
                client.bump_timeout(client.extended_timeout)
2009
2378
                if self.server.use_dbus:
2010
2379
                    # Emit D-Bus signal
2011
2380
                    client.GotSecret()
2012
 
            
 
2381
 
2013
2382
            finally:
2014
2383
                if approval_required:
2015
2384
                    client.approvals_pending -= 1
2016
2385
                try:
2017
2386
                    session.bye()
2018
 
                except gnutls.errors.GNUTLSError as error:
 
2387
                except gnutls.Error as error:
2019
2388
                    logger.warning("GnuTLS bye failed",
2020
2389
                                   exc_info=error)
2021
 
    
 
2390
 
2022
2391
    @staticmethod
2023
2392
    def peer_certificate(session):
2024
 
        "Return the peer's OpenPGP certificate as a bytestring"
2025
 
        # If not an OpenPGP certificate...
2026
 
        if (gnutls.library.functions.gnutls_certificate_type_get(
2027
 
                session._c_object)
2028
 
            != gnutls.library.constants.GNUTLS_CRT_OPENPGP):
2029
 
            # ...do the normal thing
2030
 
            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""
2031
2409
        list_size = ctypes.c_uint(1)
2032
 
        cert_list = (gnutls.library.functions
2033
 
                     .gnutls_certificate_get_peers
 
2410
        cert_list = (gnutls.certificate_get_peers
2034
2411
                     (session._c_object, ctypes.byref(list_size)))
2035
2412
        if not bool(cert_list) and list_size.value != 0:
2036
 
            raise gnutls.errors.GNUTLSError("error getting peer"
2037
 
                                            " certificate")
 
2413
            raise gnutls.Error("error getting peer certificate")
2038
2414
        if list_size.value == 0:
2039
2415
            return None
2040
2416
        cert = cert_list[0]
2041
2417
        return ctypes.string_at(cert.data, cert.size)
2042
 
    
 
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
 
2043
2453
    @staticmethod
2044
2454
    def fingerprint(openpgp):
2045
2455
        "Convert an OpenPGP bytestring to a hexdigit fingerprint"
2046
2456
        # New GnuTLS "datum" with the OpenPGP public key
2047
 
        datum = gnutls.library.types.gnutls_datum_t(
 
2457
        datum = gnutls.datum_t(
2048
2458
            ctypes.cast(ctypes.c_char_p(openpgp),
2049
2459
                        ctypes.POINTER(ctypes.c_ubyte)),
2050
2460
            ctypes.c_uint(len(openpgp)))
2051
2461
        # New empty GnuTLS certificate
2052
 
        crt = gnutls.library.types.gnutls_openpgp_crt_t()
2053
 
        gnutls.library.functions.gnutls_openpgp_crt_init(
2054
 
            ctypes.byref(crt))
 
2462
        crt = gnutls.openpgp_crt_t()
 
2463
        gnutls.openpgp_crt_init(ctypes.byref(crt))
2055
2464
        # Import the OpenPGP public key into the certificate
2056
 
        gnutls.library.functions.gnutls_openpgp_crt_import(
2057
 
            crt, ctypes.byref(datum),
2058
 
            gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
 
2465
        gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
 
2466
                                  gnutls.OPENPGP_FMT_RAW)
2059
2467
        # Verify the self signature in the key
2060
2468
        crtverify = ctypes.c_uint()
2061
 
        gnutls.library.functions.gnutls_openpgp_crt_verify_self(
2062
 
            crt, 0, ctypes.byref(crtverify))
 
2469
        gnutls.openpgp_crt_verify_self(crt, 0,
 
2470
                                       ctypes.byref(crtverify))
2063
2471
        if crtverify.value != 0:
2064
 
            gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2065
 
            raise gnutls.errors.CertificateSecurityError(
2066
 
                "Verify failed")
 
2472
            gnutls.openpgp_crt_deinit(crt)
 
2473
            raise gnutls.CertificateSecurityError(code
 
2474
                                                  =crtverify.value)
2067
2475
        # New buffer for the fingerprint
2068
2476
        buf = ctypes.create_string_buffer(20)
2069
2477
        buf_len = ctypes.c_size_t()
2070
2478
        # Get the fingerprint from the certificate into the buffer
2071
 
        gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
2072
 
            crt, ctypes.byref(buf), ctypes.byref(buf_len))
 
2479
        gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
 
2480
                                           ctypes.byref(buf_len))
2073
2481
        # Deinit the certificate
2074
 
        gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
 
2482
        gnutls.openpgp_crt_deinit(crt)
2075
2483
        # Convert the buffer to a Python bytestring
2076
2484
        fpr = ctypes.string_at(buf, buf_len.value)
2077
2485
        # Convert the bytestring to hexadecimal notation
2081
2489
 
2082
2490
class MultiprocessingMixIn(object):
2083
2491
    """Like socketserver.ThreadingMixIn, but with multiprocessing"""
2084
 
    
 
2492
 
2085
2493
    def sub_process_main(self, request, address):
2086
2494
        try:
2087
2495
            self.finish_request(request, address)
2088
2496
        except Exception:
2089
2497
            self.handle_error(request, address)
2090
2498
        self.close_request(request)
2091
 
    
 
2499
 
2092
2500
    def process_request(self, request, address):
2093
2501
        """Start a new process to process the request."""
2094
 
        proc = multiprocessing.Process(target = self.sub_process_main,
2095
 
                                       args = (request, address))
 
2502
        proc = multiprocessing.Process(target=self.sub_process_main,
 
2503
                                       args=(request, address))
2096
2504
        proc.start()
2097
2505
        return proc
2098
2506
 
2099
2507
 
2100
2508
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2101
2509
    """ adds a pipe to the MixIn """
2102
 
    
 
2510
 
2103
2511
    def process_request(self, request, client_address):
2104
2512
        """Overrides and wraps the original process_request().
2105
 
        
 
2513
 
2106
2514
        This function creates a new pipe in self.pipe
2107
2515
        """
2108
2516
        parent_pipe, self.child_pipe = multiprocessing.Pipe()
2109
 
        
 
2517
 
2110
2518
        proc = MultiprocessingMixIn.process_request(self, request,
2111
2519
                                                    client_address)
2112
2520
        self.child_pipe.close()
2113
2521
        self.add_pipe(parent_pipe, proc)
2114
 
    
 
2522
 
2115
2523
    def add_pipe(self, parent_pipe, proc):
2116
2524
        """Dummy function; override as necessary"""
2117
2525
        raise NotImplementedError()
2120
2528
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2121
2529
                     socketserver.TCPServer, object):
2122
2530
    """IPv6-capable TCP server.  Accepts 'None' as address and/or port
2123
 
    
 
2531
 
2124
2532
    Attributes:
2125
2533
        enabled:        Boolean; whether this server is activated yet
2126
2534
        interface:      None or a network interface name (string)
2127
2535
        use_ipv6:       Boolean; to use IPv6 or not
2128
2536
    """
2129
 
    
 
2537
 
2130
2538
    def __init__(self, server_address, RequestHandlerClass,
2131
2539
                 interface=None,
2132
2540
                 use_ipv6=True,
2142
2550
            self.socketfd = socketfd
2143
2551
            # Save the original socket.socket() function
2144
2552
            self.socket_socket = socket.socket
 
2553
 
2145
2554
            # To implement --socket, we monkey patch socket.socket.
2146
 
            # 
 
2555
            #
2147
2556
            # (When socketserver.TCPServer is a new-style class, we
2148
2557
            # could make self.socket into a property instead of monkey
2149
2558
            # patching socket.socket.)
2150
 
            # 
 
2559
            #
2151
2560
            # Create a one-time-only replacement for socket.socket()
2152
2561
            @functools.wraps(socket.socket)
2153
2562
            def socket_wrapper(*args, **kwargs):
2165
2574
        # socket_wrapper(), if socketfd was set.
2166
2575
        socketserver.TCPServer.__init__(self, server_address,
2167
2576
                                        RequestHandlerClass)
2168
 
    
 
2577
 
2169
2578
    def server_bind(self):
2170
2579
        """This overrides the normal server_bind() function
2171
2580
        to bind to an interface if one was specified, and also NOT to
2172
2581
        bind to an address or port if they were not specified."""
 
2582
        global SO_BINDTODEVICE
2173
2583
        if self.interface is not None:
2174
2584
            if SO_BINDTODEVICE is None:
2175
 
                logger.error("SO_BINDTODEVICE does not exist;"
2176
 
                             " cannot bind to interface %s",
2177
 
                             self.interface)
2178
 
            else:
2179
 
                try:
2180
 
                    self.socket.setsockopt(
2181
 
                        socket.SOL_SOCKET, SO_BINDTODEVICE,
2182
 
                        (self.interface + "\0").encode("utf-8"))
2183
 
                except socket.error as error:
2184
 
                    if error.errno == errno.EPERM:
2185
 
                        logger.error("No permission to bind to"
2186
 
                                     " interface %s", self.interface)
2187
 
                    elif error.errno == errno.ENOPROTOOPT:
2188
 
                        logger.error("SO_BINDTODEVICE not available;"
2189
 
                                     " cannot bind to interface %s",
2190
 
                                     self.interface)
2191
 
                    elif error.errno == errno.ENODEV:
2192
 
                        logger.error("Interface %s does not exist,"
2193
 
                                     " cannot bind", self.interface)
2194
 
                    else:
2195
 
                        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
2196
2606
        # Only bind(2) the socket if we really need to.
2197
2607
        if self.server_address[0] or self.server_address[1]:
 
2608
            if self.server_address[1]:
 
2609
                self.allow_reuse_address = True
2198
2610
            if not self.server_address[0]:
2199
2611
                if self.address_family == socket.AF_INET6:
2200
 
                    any_address = "::" # in6addr_any
 
2612
                    any_address = "::"  # in6addr_any
2201
2613
                else:
2202
 
                    any_address = "0.0.0.0" # INADDR_ANY
 
2614
                    any_address = "0.0.0.0"  # INADDR_ANY
2203
2615
                self.server_address = (any_address,
2204
2616
                                       self.server_address[1])
2205
2617
            elif not self.server_address[1]:
2215
2627
 
2216
2628
class MandosServer(IPv6_TCPServer):
2217
2629
    """Mandos server.
2218
 
    
 
2630
 
2219
2631
    Attributes:
2220
2632
        clients:        set of Client objects
2221
2633
        gnutls_priority GnuTLS priority string
2222
2634
        use_dbus:       Boolean; to emit D-Bus signals or not
2223
 
    
2224
 
    Assumes a gobject.MainLoop event loop.
 
2635
 
 
2636
    Assumes a GLib.MainLoop event loop.
2225
2637
    """
2226
 
    
 
2638
 
2227
2639
    def __init__(self, server_address, RequestHandlerClass,
2228
2640
                 interface=None,
2229
2641
                 use_ipv6=True,
2239
2651
        self.gnutls_priority = gnutls_priority
2240
2652
        IPv6_TCPServer.__init__(self, server_address,
2241
2653
                                RequestHandlerClass,
2242
 
                                interface = interface,
2243
 
                                use_ipv6 = use_ipv6,
2244
 
                                socketfd = socketfd)
2245
 
    
 
2654
                                interface=interface,
 
2655
                                use_ipv6=use_ipv6,
 
2656
                                socketfd=socketfd)
 
2657
 
2246
2658
    def server_activate(self):
2247
2659
        if self.enabled:
2248
2660
            return socketserver.TCPServer.server_activate(self)
2249
 
    
 
2661
 
2250
2662
    def enable(self):
2251
2663
        self.enabled = True
2252
 
    
 
2664
 
2253
2665
    def add_pipe(self, parent_pipe, proc):
2254
2666
        # Call "handle_ipc" for both data and EOF events
2255
 
        gobject.io_add_watch(
 
2667
        GLib.io_add_watch(
2256
2668
            parent_pipe.fileno(),
2257
 
            gobject.IO_IN | gobject.IO_HUP,
 
2669
            GLib.IO_IN | GLib.IO_HUP,
2258
2670
            functools.partial(self.handle_ipc,
2259
 
                              parent_pipe = parent_pipe,
2260
 
                              proc = proc))
2261
 
    
 
2671
                              parent_pipe=parent_pipe,
 
2672
                              proc=proc))
 
2673
 
2262
2674
    def handle_ipc(self, source, condition,
2263
2675
                   parent_pipe=None,
2264
 
                   proc = None,
 
2676
                   proc=None,
2265
2677
                   client_object=None):
2266
2678
        # error, or the other end of multiprocessing.Pipe has closed
2267
 
        if condition & (gobject.IO_ERR | gobject.IO_HUP):
 
2679
        if condition & (GLib.IO_ERR | GLib.IO_HUP):
2268
2680
            # Wait for other process to exit
2269
2681
            proc.join()
2270
2682
            return False
2271
 
        
 
2683
 
2272
2684
        # Read a request from the child
2273
2685
        request = parent_pipe.recv()
2274
2686
        command = request[0]
2275
 
        
 
2687
 
2276
2688
        if command == 'init':
2277
 
            fpr = request[1]
2278
 
            address = request[2]
2279
 
            
2280
 
            for c in self.clients.itervalues():
2281
 
                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:
2282
2700
                    client = c
2283
2701
                    break
2284
2702
            else:
2285
 
                logger.info("Client not found for fingerprint: %s, ad"
2286
 
                            "dress: %s", fpr, address)
 
2703
                logger.info("Client not found for key ID: %s, address"
 
2704
                            ": %s", key_id or fpr, address)
2287
2705
                if self.use_dbus:
2288
2706
                    # Emit D-Bus signal
2289
 
                    mandos_dbus_service.ClientNotFound(fpr,
 
2707
                    mandos_dbus_service.ClientNotFound(key_id or fpr,
2290
2708
                                                       address[0])
2291
2709
                parent_pipe.send(False)
2292
2710
                return False
2293
 
            
2294
 
            gobject.io_add_watch(
 
2711
 
 
2712
            GLib.io_add_watch(
2295
2713
                parent_pipe.fileno(),
2296
 
                gobject.IO_IN | gobject.IO_HUP,
 
2714
                GLib.IO_IN | GLib.IO_HUP,
2297
2715
                functools.partial(self.handle_ipc,
2298
 
                                  parent_pipe = parent_pipe,
2299
 
                                  proc = proc,
2300
 
                                  client_object = client))
 
2716
                                  parent_pipe=parent_pipe,
 
2717
                                  proc=proc,
 
2718
                                  client_object=client))
2301
2719
            parent_pipe.send(True)
2302
2720
            # remove the old hook in favor of the new above hook on
2303
2721
            # same fileno
2306
2724
            funcname = request[1]
2307
2725
            args = request[2]
2308
2726
            kwargs = request[3]
2309
 
            
 
2727
 
2310
2728
            parent_pipe.send(('data', getattr(client_object,
2311
2729
                                              funcname)(*args,
2312
2730
                                                        **kwargs)))
2313
 
        
 
2731
 
2314
2732
        if command == 'getattr':
2315
2733
            attrname = request[1]
2316
2734
            if isinstance(client_object.__getattribute__(attrname),
2319
2737
            else:
2320
2738
                parent_pipe.send((
2321
2739
                    'data', client_object.__getattribute__(attrname)))
2322
 
        
 
2740
 
2323
2741
        if command == 'setattr':
2324
2742
            attrname = request[1]
2325
2743
            value = request[2]
2326
2744
            setattr(client_object, attrname, value)
2327
 
        
 
2745
 
2328
2746
        return True
2329
2747
 
2330
2748
 
2331
2749
def rfc3339_duration_to_delta(duration):
2332
2750
    """Parse an RFC 3339 "duration" and return a datetime.timedelta
2333
 
    
 
2751
 
2334
2752
    >>> rfc3339_duration_to_delta("P7D")
2335
2753
    datetime.timedelta(7)
2336
2754
    >>> rfc3339_duration_to_delta("PT60S")
2346
2764
    >>> rfc3339_duration_to_delta("P1DT3M20S")
2347
2765
    datetime.timedelta(1, 200)
2348
2766
    """
2349
 
    
 
2767
 
2350
2768
    # Parsing an RFC 3339 duration with regular expressions is not
2351
2769
    # possible - there would have to be multiple places for the same
2352
2770
    # values, like seconds.  The current code, while more esoteric, is
2353
2771
    # cleaner without depending on a parsing library.  If Python had a
2354
2772
    # built-in library for parsing we would use it, but we'd like to
2355
2773
    # avoid excessive use of external libraries.
2356
 
    
 
2774
 
2357
2775
    # New type for defining tokens, syntax, and semantics all-in-one
2358
2776
    Token = collections.namedtuple("Token", (
2359
2777
        "regexp",  # To match token; if "value" is not None, must have
2392
2810
                           frozenset((token_year, token_month,
2393
2811
                                      token_day, token_time,
2394
2812
                                      token_week)))
2395
 
    # Define starting values
2396
 
    value = datetime.timedelta() # Value so far
 
2813
    # Define starting values:
 
2814
    # Value so far
 
2815
    value = datetime.timedelta()
2397
2816
    found_token = None
2398
 
    followers = frozenset((token_duration, )) # Following valid tokens
2399
 
    s = duration                # String left to parse
 
2817
    # Following valid tokens
 
2818
    followers = frozenset((token_duration, ))
 
2819
    # String left to parse
 
2820
    s = duration
2400
2821
    # Loop until end token is found
2401
2822
    while found_token is not token_end:
2402
2823
        # Search for any currently valid tokens
2426
2847
 
2427
2848
def string_to_delta(interval):
2428
2849
    """Parse a string and return a datetime.timedelta
2429
 
    
 
2850
 
2430
2851
    >>> string_to_delta('7d')
2431
2852
    datetime.timedelta(7)
2432
2853
    >>> string_to_delta('60s')
2440
2861
    >>> string_to_delta('5m 30s')
2441
2862
    datetime.timedelta(0, 330)
2442
2863
    """
2443
 
    
 
2864
 
2444
2865
    try:
2445
2866
        return rfc3339_duration_to_delta(interval)
2446
2867
    except ValueError:
2447
2868
        pass
2448
 
    
 
2869
 
2449
2870
    timevalue = datetime.timedelta(0)
2450
2871
    for s in interval.split():
2451
2872
        try:
2469
2890
    return timevalue
2470
2891
 
2471
2892
 
2472
 
def daemon(nochdir = False, noclose = False):
 
2893
def daemon(nochdir=False, noclose=False):
2473
2894
    """See daemon(3).  Standard BSD Unix function.
2474
 
    
 
2895
 
2475
2896
    This should really exist as os.daemon, but it doesn't (yet)."""
2476
2897
    if os.fork():
2477
2898
        sys.exit()
2495
2916
 
2496
2917
 
2497
2918
def main():
2498
 
    
 
2919
 
2499
2920
    ##################################################################
2500
2921
    # Parsing of options, both command line and config file
2501
 
    
 
2922
 
2502
2923
    parser = argparse.ArgumentParser()
2503
2924
    parser.add_argument("-v", "--version", action="version",
2504
 
                        version = "%(prog)s {}".format(version),
 
2925
                        version="%(prog)s {}".format(version),
2505
2926
                        help="show version number and exit")
2506
2927
    parser.add_argument("-i", "--interface", metavar="IF",
2507
2928
                        help="Bind to interface IF")
2543
2964
    parser.add_argument("--no-zeroconf", action="store_false",
2544
2965
                        dest="zeroconf", help="Do not use Zeroconf",
2545
2966
                        default=None)
2546
 
    
 
2967
 
2547
2968
    options = parser.parse_args()
2548
 
    
 
2969
 
2549
2970
    if options.check:
2550
2971
        import doctest
2551
2972
        fail_count, test_count = doctest.testmod()
2552
2973
        sys.exit(os.EX_OK if fail_count == 0 else 1)
2553
 
    
 
2974
 
2554
2975
    # Default values for config file for server-global settings
2555
 
    server_defaults = { "interface": "",
2556
 
                        "address": "",
2557
 
                        "port": "",
2558
 
                        "debug": "False",
2559
 
                        "priority":
2560
 
                        "SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2561
 
                        ":+SIGN-DSA-SHA256",
2562
 
                        "servicename": "Mandos",
2563
 
                        "use_dbus": "True",
2564
 
                        "use_ipv6": "True",
2565
 
                        "debuglevel": "",
2566
 
                        "restore": "True",
2567
 
                        "socket": "",
2568
 
                        "statedir": "/var/lib/mandos",
2569
 
                        "foreground": "False",
2570
 
                        "zeroconf": "True",
2571
 
                    }
2572
 
    
 
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
 
2573
2999
    # Parse config file for server-global settings
2574
3000
    server_config = configparser.SafeConfigParser(server_defaults)
2575
3001
    del server_defaults
2577
3003
    # Convert the SafeConfigParser object to a dict
2578
3004
    server_settings = server_config.defaults()
2579
3005
    # Use the appropriate methods on the non-string config options
2580
 
    for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
 
3006
    for option in ("debug", "use_dbus", "use_ipv6", "restore",
 
3007
                   "foreground", "zeroconf"):
2581
3008
        server_settings[option] = server_config.getboolean("DEFAULT",
2582
3009
                                                           option)
2583
3010
    if server_settings["port"]:
2593
3020
            server_settings["socket"] = os.dup(server_settings
2594
3021
                                               ["socket"])
2595
3022
    del server_config
2596
 
    
 
3023
 
2597
3024
    # Override the settings from the config file with command line
2598
3025
    # options, if set.
2599
3026
    for option in ("interface", "address", "port", "debug",
2617
3044
    if server_settings["debug"]:
2618
3045
        server_settings["foreground"] = True
2619
3046
    # Now we have our good server settings in "server_settings"
2620
 
    
 
3047
 
2621
3048
    ##################################################################
2622
 
    
 
3049
 
2623
3050
    if (not server_settings["zeroconf"]
2624
3051
        and not (server_settings["port"]
2625
3052
                 or server_settings["socket"] != "")):
2626
3053
        parser.error("Needs port or socket to work without Zeroconf")
2627
 
    
 
3054
 
2628
3055
    # For convenience
2629
3056
    debug = server_settings["debug"]
2630
3057
    debuglevel = server_settings["debuglevel"]
2634
3061
                                     stored_state_file)
2635
3062
    foreground = server_settings["foreground"]
2636
3063
    zeroconf = server_settings["zeroconf"]
2637
 
    
 
3064
 
2638
3065
    if debug:
2639
3066
        initlogger(debug, logging.DEBUG)
2640
3067
    else:
2643
3070
        else:
2644
3071
            level = getattr(logging, debuglevel.upper())
2645
3072
            initlogger(debug, level)
2646
 
    
 
3073
 
2647
3074
    if server_settings["servicename"] != "Mandos":
2648
3075
        syslogger.setFormatter(
2649
3076
            logging.Formatter('Mandos ({}) [%(process)d]:'
2650
3077
                              ' %(levelname)s: %(message)s'.format(
2651
3078
                                  server_settings["servicename"])))
2652
 
    
 
3079
 
2653
3080
    # Parse config file with clients
2654
3081
    client_config = configparser.SafeConfigParser(Client
2655
3082
                                                  .client_defaults)
2656
3083
    client_config.read(os.path.join(server_settings["configdir"],
2657
3084
                                    "clients.conf"))
2658
 
    
 
3085
 
2659
3086
    global mandos_dbus_service
2660
3087
    mandos_dbus_service = None
2661
 
    
 
3088
 
2662
3089
    socketfd = None
2663
3090
    if server_settings["socket"] != "":
2664
3091
        socketfd = server_settings["socket"]
2680
3107
        except IOError as e:
2681
3108
            logger.error("Could not open file %r", pidfilename,
2682
3109
                         exc_info=e)
2683
 
    
2684
 
    for name in ("_mandos", "mandos", "nobody"):
 
3110
 
 
3111
    for name, group in (("_mandos", "_mandos"),
 
3112
                        ("mandos", "mandos"),
 
3113
                        ("nobody", "nogroup")):
2685
3114
        try:
2686
3115
            uid = pwd.getpwnam(name).pw_uid
2687
 
            gid = pwd.getpwnam(name).pw_gid
 
3116
            gid = pwd.getpwnam(group).pw_gid
2688
3117
            break
2689
3118
        except KeyError:
2690
3119
            continue
2694
3123
    try:
2695
3124
        os.setgid(gid)
2696
3125
        os.setuid(uid)
 
3126
        if debug:
 
3127
            logger.debug("Did setuid/setgid to {}:{}".format(uid,
 
3128
                                                             gid))
2697
3129
    except OSError as error:
 
3130
        logger.warning("Failed to setuid/setgid to {}:{}: {}"
 
3131
                       .format(uid, gid, os.strerror(error.errno)))
2698
3132
        if error.errno != errno.EPERM:
2699
3133
            raise
2700
 
    
 
3134
 
2701
3135
    if debug:
2702
3136
        # Enable all possible GnuTLS debugging
2703
 
        
 
3137
 
2704
3138
        # "Use a log level over 10 to enable all debugging options."
2705
3139
        # - GnuTLS manual
2706
 
        gnutls.library.functions.gnutls_global_set_log_level(11)
2707
 
        
2708
 
        @gnutls.library.types.gnutls_log_func
 
3140
        gnutls.global_set_log_level(11)
 
3141
 
 
3142
        @gnutls.log_func
2709
3143
        def debug_gnutls(level, string):
2710
3144
            logger.debug("GnuTLS: %s", string[:-1])
2711
 
        
2712
 
        gnutls.library.functions.gnutls_global_set_log_function(
2713
 
            debug_gnutls)
2714
 
        
 
3145
 
 
3146
        gnutls.global_set_log_function(debug_gnutls)
 
3147
 
2715
3148
        # Redirect stdin so all checkers get /dev/null
2716
3149
        null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2717
3150
        os.dup2(null, sys.stdin.fileno())
2718
3151
        if null > 2:
2719
3152
            os.close(null)
2720
 
    
 
3153
 
2721
3154
    # Need to fork before connecting to D-Bus
2722
3155
    if not foreground:
2723
3156
        # Close all input and output, do double fork, etc.
2724
3157
        daemon()
2725
 
    
2726
 
    # multiprocessing will use threads, so before we use gobject we
2727
 
    # need to inform gobject that threads will be used.
2728
 
    gobject.threads_init()
2729
 
    
 
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
 
2730
3163
    global main_loop
2731
3164
    # From the Avahi example code
2732
3165
    DBusGMainLoop(set_as_default=True)
2733
 
    main_loop = gobject.MainLoop()
 
3166
    main_loop = GLib.MainLoop()
2734
3167
    bus = dbus.SystemBus()
2735
3168
    # End of Avahi example code
2736
3169
    if use_dbus:
2749
3182
    if zeroconf:
2750
3183
        protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2751
3184
        service = AvahiServiceToSyslog(
2752
 
            name = server_settings["servicename"],
2753
 
            servicetype = "_mandos._tcp",
2754
 
            protocol = protocol,
2755
 
            bus = bus)
 
3185
            name=server_settings["servicename"],
 
3186
            servicetype="_mandos._tcp",
 
3187
            protocol=protocol,
 
3188
            bus=bus)
2756
3189
        if server_settings["interface"]:
2757
3190
            service.interface = if_nametoindex(
2758
3191
                server_settings["interface"].encode("utf-8"))
2759
 
    
 
3192
 
2760
3193
    global multiprocessing_manager
2761
3194
    multiprocessing_manager = multiprocessing.Manager()
2762
 
    
 
3195
 
2763
3196
    client_class = Client
2764
3197
    if use_dbus:
2765
 
        client_class = functools.partial(ClientDBus, bus = bus)
2766
 
    
 
3198
        client_class = functools.partial(ClientDBus, bus=bus)
 
3199
 
2767
3200
    client_settings = Client.config_parser(client_config)
2768
3201
    old_client_settings = {}
2769
3202
    clients_data = {}
2770
 
    
 
3203
 
2771
3204
    # This is used to redirect stdout and stderr for checker processes
2772
3205
    global wnull
2773
 
    wnull = open(os.devnull, "w") # A writable /dev/null
 
3206
    wnull = open(os.devnull, "w")  # A writable /dev/null
2774
3207
    # Only used if server is running in foreground but not in debug
2775
3208
    # mode
2776
3209
    if debug or not foreground:
2777
3210
        wnull.close()
2778
 
    
 
3211
 
2779
3212
    # Get client data and settings from last running state.
2780
3213
    if server_settings["restore"]:
2781
3214
        try:
2782
3215
            with open(stored_state_path, "rb") as stored_state:
2783
 
                clients_data, old_client_settings = pickle.load(
2784
 
                    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"))
2785
3265
            os.remove(stored_state_path)
2786
3266
        except IOError as e:
2787
3267
            if e.errno == errno.ENOENT:
2795
3275
            logger.warning("Could not load persistent state: "
2796
3276
                           "EOFError:",
2797
3277
                           exc_info=e)
2798
 
    
 
3278
 
2799
3279
    with PGPEngine() as pgp:
2800
3280
        for client_name, client in clients_data.items():
2801
3281
            # Skip removed clients
2802
3282
            if client_name not in client_settings:
2803
3283
                continue
2804
 
            
 
3284
 
2805
3285
            # Decide which value to use after restoring saved state.
2806
3286
            # We have three different values: Old config file,
2807
3287
            # new config file, and saved state.
2818
3298
                        client[name] = value
2819
3299
                except KeyError:
2820
3300
                    pass
2821
 
            
 
3301
 
2822
3302
            # Clients who has passed its expire date can still be
2823
3303
            # enabled if its last checker was successful.  A Client
2824
3304
            # whose checker succeeded before we stored its state is
2857
3337
                    client_name))
2858
3338
                client["secret"] = (client_settings[client_name]
2859
3339
                                    ["secret"])
2860
 
    
 
3340
 
2861
3341
    # Add/remove clients based on new changes made to config
2862
3342
    for client_name in (set(old_client_settings)
2863
3343
                        - set(client_settings)):
2865
3345
    for client_name in (set(client_settings)
2866
3346
                        - set(old_client_settings)):
2867
3347
        clients_data[client_name] = client_settings[client_name]
2868
 
    
 
3348
 
2869
3349
    # Create all client objects
2870
3350
    for client_name, client in clients_data.items():
2871
3351
        tcp_server.clients[client_name] = client_class(
2872
 
            name = client_name,
2873
 
            settings = client,
2874
 
            server_settings = server_settings)
2875
 
    
 
3352
            name=client_name,
 
3353
            settings=client,
 
3354
            server_settings=server_settings)
 
3355
 
2876
3356
    if not tcp_server.clients:
2877
3357
        logger.warning("No clients defined")
2878
 
    
 
3358
 
2879
3359
    if not foreground:
2880
3360
        if pidfile is not None:
2881
3361
            pid = os.getpid()
2887
3367
                             pidfilename, pid)
2888
3368
        del pidfile
2889
3369
        del pidfilename
2890
 
    
2891
 
    signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2892
 
    signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2893
 
    
 
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
 
2894
3375
    if use_dbus:
2895
 
        
 
3376
 
2896
3377
        @alternate_dbus_interfaces(
2897
 
            { "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
 
3378
            {"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
2898
3379
        class MandosDBusService(DBusObjectWithObjectManager):
2899
3380
            """A D-Bus proxy object"""
2900
 
            
 
3381
 
2901
3382
            def __init__(self):
2902
3383
                dbus.service.Object.__init__(self, bus, "/")
2903
 
            
 
3384
 
2904
3385
            _interface = "se.recompile.Mandos"
2905
 
            
 
3386
 
2906
3387
            @dbus.service.signal(_interface, signature="o")
2907
3388
            def ClientAdded(self, objpath):
2908
3389
                "D-Bus signal"
2909
3390
                pass
2910
 
            
 
3391
 
2911
3392
            @dbus.service.signal(_interface, signature="ss")
2912
 
            def ClientNotFound(self, fingerprint, address):
 
3393
            def ClientNotFound(self, key_id, address):
2913
3394
                "D-Bus signal"
2914
3395
                pass
2915
 
            
 
3396
 
2916
3397
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
2917
3398
                               "true"})
2918
3399
            @dbus.service.signal(_interface, signature="os")
2919
3400
            def ClientRemoved(self, objpath, name):
2920
3401
                "D-Bus signal"
2921
3402
                pass
2922
 
            
 
3403
 
2923
3404
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
2924
3405
                               "true"})
2925
3406
            @dbus.service.method(_interface, out_signature="ao")
2926
3407
            def GetAllClients(self):
2927
3408
                "D-Bus method"
2928
3409
                return dbus.Array(c.dbus_object_path for c in
2929
 
                                  tcp_server.clients.itervalues())
2930
 
            
 
3410
                                  tcp_server.clients.values())
 
3411
 
2931
3412
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
2932
3413
                               "true"})
2933
3414
            @dbus.service.method(_interface,
2935
3416
            def GetAllClientsWithProperties(self):
2936
3417
                "D-Bus method"
2937
3418
                return dbus.Dictionary(
2938
 
                    { c.dbus_object_path: c.GetAll(
 
3419
                    {c.dbus_object_path: c.GetAll(
2939
3420
                        "se.recompile.Mandos.Client")
2940
 
                      for c in tcp_server.clients.itervalues() },
 
3421
                     for c in tcp_server.clients.values()},
2941
3422
                    signature="oa{sv}")
2942
 
            
 
3423
 
2943
3424
            @dbus.service.method(_interface, in_signature="o")
2944
3425
            def RemoveClient(self, object_path):
2945
3426
                "D-Bus method"
2946
 
                for c in tcp_server.clients.itervalues():
 
3427
                for c in tcp_server.clients.values():
2947
3428
                    if c.dbus_object_path == object_path:
2948
3429
                        del tcp_server.clients[c.name]
2949
3430
                        c.remove_from_connection()
2953
3434
                        self.client_removed_signal(c)
2954
3435
                        return
2955
3436
                raise KeyError(object_path)
2956
 
            
 
3437
 
2957
3438
            del _interface
2958
 
            
 
3439
 
2959
3440
            @dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
2960
 
                                 out_signature = "a{oa{sa{sv}}}")
 
3441
                                 out_signature="a{oa{sa{sv}}}")
2961
3442
            def GetManagedObjects(self):
2962
3443
                """D-Bus method"""
2963
3444
                return dbus.Dictionary(
2964
 
                    { client.dbus_object_path:
2965
 
                      dbus.Dictionary(
2966
 
                          { interface: client.GetAll(interface)
2967
 
                            for interface in
2968
 
                                 client._get_all_interface_names()})
2969
 
                      for client in tcp_server.clients.values()})
2970
 
            
 
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
 
2971
3452
            def client_added_signal(self, client):
2972
3453
                """Send the new standard signal and the old signal"""
2973
3454
                if use_dbus:
2975
3456
                    self.InterfacesAdded(
2976
3457
                        client.dbus_object_path,
2977
3458
                        dbus.Dictionary(
2978
 
                            { interface: client.GetAll(interface)
2979
 
                              for interface in
2980
 
                              client._get_all_interface_names()}))
 
3459
                            {interface: client.GetAll(interface)
 
3460
                             for interface in
 
3461
                             client._get_all_interface_names()}))
2981
3462
                    # Old signal
2982
3463
                    self.ClientAdded(client.dbus_object_path)
2983
 
            
 
3464
 
2984
3465
            def client_removed_signal(self, client):
2985
3466
                """Send the new standard signal and the old signal"""
2986
3467
                if use_dbus:
2991
3472
                    # Old signal
2992
3473
                    self.ClientRemoved(client.dbus_object_path,
2993
3474
                                       client.name)
2994
 
        
 
3475
 
2995
3476
        mandos_dbus_service = MandosDBusService()
2996
 
    
 
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
 
2997
3483
    def cleanup():
2998
3484
        "Cleanup function; run on exit"
2999
3485
        if zeroconf:
3000
3486
            service.cleanup()
3001
 
        
3002
 
        multiprocessing.active_children()
3003
 
        wnull.close()
 
3487
 
 
3488
        mp.active_children()
 
3489
        wn.close()
3004
3490
        if not (tcp_server.clients or client_settings):
3005
3491
            return
3006
 
        
 
3492
 
3007
3493
        # Store client before exiting. Secrets are encrypted with key
3008
3494
        # based on what config file has. If config file is
3009
3495
        # removed/edited, old secret will thus be unrecovable.
3010
3496
        clients = {}
3011
3497
        with PGPEngine() as pgp:
3012
 
            for client in tcp_server.clients.itervalues():
 
3498
            for client in tcp_server.clients.values():
3013
3499
                key = client_settings[client.name]["secret"]
3014
3500
                client.encrypted_secret = pgp.encrypt(client.secret,
3015
3501
                                                      key)
3016
3502
                client_dict = {}
3017
 
                
 
3503
 
3018
3504
                # A list of attributes that can not be pickled
3019
3505
                # + secret.
3020
 
                exclude = { "bus", "changedstate", "secret",
3021
 
                            "checker", "server_settings" }
 
3506
                exclude = {"bus", "changedstate", "secret",
 
3507
                           "checker", "server_settings"}
3022
3508
                for name, typ in inspect.getmembers(dbus.service
3023
3509
                                                    .Object):
3024
3510
                    exclude.add(name)
3025
 
                
 
3511
 
3026
3512
                client_dict["encrypted_secret"] = (client
3027
3513
                                                   .encrypted_secret)
3028
3514
                for attr in client.client_structure:
3029
3515
                    if attr not in exclude:
3030
3516
                        client_dict[attr] = getattr(client, attr)
3031
 
                
 
3517
 
3032
3518
                clients[client.name] = client_dict
3033
3519
                del client_settings[client.name]["secret"]
3034
 
        
 
3520
 
3035
3521
        try:
3036
3522
            with tempfile.NamedTemporaryFile(
3037
3523
                    mode='wb',
3039
3525
                    prefix='clients-',
3040
3526
                    dir=os.path.dirname(stored_state_path),
3041
3527
                    delete=False) as stored_state:
3042
 
                pickle.dump((clients, client_settings), stored_state)
 
3528
                pickle.dump((clients, client_settings), stored_state,
 
3529
                            protocol=2)
3043
3530
                tempname = stored_state.name
3044
3531
            os.rename(tempname, stored_state_path)
3045
3532
        except (IOError, OSError) as e:
3055
3542
                logger.warning("Could not save persistent state:",
3056
3543
                               exc_info=e)
3057
3544
                raise
3058
 
        
 
3545
 
3059
3546
        # Delete all clients, and settings from config
3060
3547
        while tcp_server.clients:
3061
3548
            name, client = tcp_server.clients.popitem()
3067
3554
            if use_dbus:
3068
3555
                mandos_dbus_service.client_removed_signal(client)
3069
3556
        client_settings.clear()
3070
 
    
 
3557
 
3071
3558
    atexit.register(cleanup)
3072
 
    
3073
 
    for client in tcp_server.clients.itervalues():
 
3559
 
 
3560
    for client in tcp_server.clients.values():
3074
3561
        if use_dbus:
3075
3562
            # Emit D-Bus signal for adding
3076
3563
            mandos_dbus_service.client_added_signal(client)
3077
3564
        # Need to initiate checking of clients
3078
3565
        if client.enabled:
3079
3566
            client.init_checker()
3080
 
    
 
3567
 
3081
3568
    tcp_server.enable()
3082
3569
    tcp_server.server_activate()
3083
 
    
 
3570
 
3084
3571
    # Find out what port we got
3085
3572
    if zeroconf:
3086
3573
        service.port = tcp_server.socket.getsockname()[1]
3091
3578
    else:                       # IPv4
3092
3579
        logger.info("Now listening on address %r, port %d",
3093
3580
                    *tcp_server.socket.getsockname())
3094
 
    
3095
 
    #service.interface = tcp_server.socket.getsockname()[3]
3096
 
    
 
3581
 
 
3582
    # service.interface = tcp_server.socket.getsockname()[3]
 
3583
 
3097
3584
    try:
3098
3585
        if zeroconf:
3099
3586
            # From the Avahi example code
3104
3591
                cleanup()
3105
3592
                sys.exit(1)
3106
3593
            # End of Avahi example code
3107
 
        
3108
 
        gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
3109
 
                             lambda *args, **kwargs:
3110
 
                             (tcp_server.handle_request
3111
 
                              (*args[2:], **kwargs) or True))
3112
 
        
 
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
 
3113
3600
        logger.debug("Starting main loop")
3114
3601
        main_loop.run()
3115
3602
    except AvahiError as error: