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  • Committer: Teddy Hogeborn
  • Date: 2019-02-09 23:23:26 UTC
  • Revision ID: teddy@recompile.se-20190209232326-z1z2kzpgfixz7iaj
Add support for using raw public keys in TLS (RFC 7250)

Since GnuTLS removed support for OpenPGP keys in TLS (RFC 6091), and
no other library supports it, we have to change the protocol to use
something else.  We choose to use "raw public keys" (RFC 7250).  Since
we still use OpenPGP keys to decrypt the secret password, this means
that each client will have two keys: One OpenPGP key and one TLS
public/private key, and the key ID of the latter key is used to
identify clients instead of the fingerprint of the OpenPGP key.

Note that this code is still compatible with GnuTLS before version
3.6.0 (when OpenPGP key support was removed).  This commit merely adds
support for using raw pulic keys instead with GnuTLS 3.6.6. or later.

* DBUS-API (Signals/ClientNotFound): Change name of first parameter
                                     from "Fingerprint" to "KeyID".
  (Mandos Client Interface/Properties/KeyID): New.
* INSTALL: Document conflict with GnuTLS 3.6.0 (which removed OpenPGP
           key support) up until 3.6.6, when support for raw public
           keys was added.  Also document new dependency of client on
           "gnutls-bin" package (for certtool).
* Makefile (run-client): Depend on TLS key files, and also pass them
                         as arguments to client.
  (keydir/tls-privkey.pem, keydir/tls-pubkey.pem): New.
  (confdir/clients.conf): Add dependency on TLS public key.
  (purge-client): Add removal of TLS key files.
* clients.conf ([foo]/key_id, [bar]/key_id): New.
* debian/control (Source: mandos/Build-Depends): Also allow
                                                 libgnutls30 (>= 3.6.6)
  (Package: mandos/Depends): - '' -
  (Package: mandos/Description): Alter description to match new
                                 design.
  (Package: mandos-client/Description): - '' -
  (Package: mandos-client/Depends): Move "gnutls-bin | openssl" to
                                    here from "Recommends".
* debian/mandos-client.README.Debian: Add --tls-privkey and
                                      --tls-pubkey options to test
                                      command.
* debian/mandos-client.postinst (create_key): Renamed to "create_keys"
                                             (all callers changed),
                                             and also create TLS key.
* debian/mandos-client.postrm (purge): Also remove TLS key files.
* intro.xml (DESCRIPTION): Describe new dual-key design.
* mandos (GnuTLS): Define different functions depending on whether
                   support for raw public keys is detected.
  (Client.key_id): New attribute.
  (ClientDBus.KeyID_dbus_property): New method.
  (ProxyClient.__init__): Take new "key_id" parameter.
  (ClientHandler.handle): Use key IDs when using raw public keys and
                          use fingerprints when using OpenPGP keys.
  (ClientHandler.peer_certificate): Also handle raw public keys.
  (ClientHandler.key_id): New.
  (MandosServer.handle_ipc): Pass key ID over the pipe IPC.  Also
                             check for key ID matches when looking up
                             clients.
  (main): Default GnuTLS priority string depends on whether we are
          using raw public keys or not.  When unpickling clients, set
          key_id if not set in the pickle.
  (main/MandosDBusService.ClientNotFound): Change name of first
                                           parameter from
                                           "Fingerprint" to "KeyID".
* mandos-clients.conf.xml (OPTIONS): Document new "key_id" option.
  (OPTIONS/secret): Mention new key ID matchning.
  (EXPANSION/RUNTIME EXPANSION): Add new "key_id" option.
  (EXAMPLE): - '' -
* mandos-ctl (tablewords, main/keywords): Add new "KeyID" property.
* mandos-keygen: Create TLS key files.  New "--tls-keytype" (-T)
                 option.  Alter help text to be more clear about key
                 types.  When in password mode, also output "key_id"
                 option.
* mandos-keygen.xml (SYNOPSIS): Add new "--tls-keytype" (-T) option.
  (DESCRIPTION): Alter to match new dual-key design.
  (OVERVIEW): - '' -
  (FILES): Add TLS key files.
* mandos-options.xml (priority): Document new default priority string
                                 when using raw public keys.
* mandos.xml (NETWORK PROTOCOL): Describe new protocol using key ID.
  (BUGS): Remove issue about checking expire times of OpenPGP keys,
          since TLS public keys do not have expiration times.
  (SECURITY/CLIENT): Alter description to match new design.
  (SEE ALSO/GnuTLS): - '' -
  (SEE ALSO): Add reference to RFC 7250, and alter description of when
              RFC 6091 is used.
* overview.xml: Alter text to match new design.
* plugin-runner.xml (EXAMPLE): Add --tls-pubkey and --tls-privkey
                               options to mandos-client options.
* plugins.d/mandos-client.c: Use raw public keys when compiling with
                             supporting GnuTLS versions. Add new
                             "--tls-pubkey" and "--tls-privkey"
                             options (which do nothing if GnuTLS
                             library does not support raw public
                             keys).  Alter text throughout to reflect
                             new design.  Only generate new DH
                             parameters (based on size of OpenPGP key)
                             when using OpenPGP in TLS.  Default
                             GnuTLS priority string depends on whether
                             we are using raw public keys or not.
* plugins.d/mandos-client.xml (SYNOPSIS): Add new "--tls-privkey" (-t)
                                          and "--tls-pubkey" (-T)
                                          options.
  (DESCRIPTION): Describe new dual-key design.
  (OPTIONS): Document new "--tls-privkey" (-t) and "--tls-pubkey" (-T)
             options.
  (OPTIONS/--dh-bits): No longer necessarily depends on OpenPGP key
                       size.
  (FILES): Add default locations for TLS public and private key files.
  (EXAMPLE): Use new --tls-pubkey and --tls-privkey options.
  (SECURITY): Alter wording slightly to reflect new dual-key design.
  (SEE ALSO/GnuTLS): Alter description to match new design.
  (SEE ALSO): Add reference to RFC 7250, and alter description of when
              RFC 6091 is used.

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Lines of Context:
mandos-monitor
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1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
 
# 
 
3
#
4
4
# Mandos Monitor - Control and monitor the Mandos server
5
 
# 
6
 
# Copyright © 2009-2012 Teddy Hogeborn
7
 
# Copyright © 2009-2012 Björn Påhlsson
8
 
# 
9
 
# This program is free software: you can redistribute it and/or modify
10
 
# it under the terms of the GNU General Public License as published by
 
5
#
 
6
# Copyright © 2009-2018 Teddy Hogeborn
 
7
# Copyright © 2009-2018 Björn Påhlsson
 
8
#
 
9
# This file is part of Mandos.
 
10
#
 
11
# Mandos is free software: you can redistribute it and/or modify it
 
12
# under the terms of the GNU General Public License as published by
11
13
# the Free Software Foundation, either version 3 of the License, or
12
14
# (at your option) any later version.
13
15
#
14
 
#     This program is distributed in the hope that it will be useful,
15
 
#     but WITHOUT ANY WARRANTY; without even the implied warranty of
 
16
#     Mandos is distributed in the hope that it will be useful, but
 
17
#     WITHOUT ANY WARRANTY; without even the implied warranty of
16
18
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17
19
#     GNU General Public License for more details.
18
 
# 
 
20
#
19
21
# You should have received a copy of the GNU General Public License
20
 
# along with this program.  If not, see
21
 
# <http://www.gnu.org/licenses/>.
22
 
# 
 
22
# along with Mandos.  If not, see <http://www.gnu.org/licenses/>.
 
23
#
23
24
# Contact the authors at <mandos@recompile.se>.
24
 
# 
 
25
#
25
26
 
26
27
from __future__ import (division, absolute_import, print_function,
27
28
                        unicode_literals)
28
 
 
29
 
from future_builtins import *
 
29
try:
 
30
    from future_builtins import *
 
31
except ImportError:
 
32
    pass
30
33
 
31
34
import sys
32
35
import os
33
 
import signal
34
36
 
35
37
import datetime
36
38
 
38
40
import urwid
39
41
 
40
42
from dbus.mainloop.glib import DBusGMainLoop
41
 
import gobject
 
43
from gi.repository import GLib
42
44
 
43
45
import dbus
44
46
 
45
 
import UserList
46
 
 
47
47
import locale
48
48
 
 
49
import logging
 
50
 
 
51
if sys.version_info.major == 2:
 
52
    str = unicode
 
53
 
49
54
locale.setlocale(locale.LC_ALL, '')
50
55
 
51
 
import logging
52
56
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
53
57
 
54
58
# Some useful constants
55
59
domain = 'se.recompile'
56
60
server_interface = domain + '.Mandos'
57
61
client_interface = domain + '.Mandos.Client'
58
 
version = "1.6.0"
59
 
 
60
 
# Always run in monochrome mode
61
 
urwid.curses_display.curses.has_colors = lambda : False
62
 
 
63
 
# Urwid doesn't support blinking, but we want it.  Since we have no
64
 
# use for underline on its own, we make underline also always blink.
65
 
urwid.curses_display.curses.A_UNDERLINE |= (
66
 
    urwid.curses_display.curses.A_BLINK)
 
62
version = "1.7.20"
 
63
 
 
64
try:
 
65
    dbus.OBJECT_MANAGER_IFACE
 
66
except AttributeError:
 
67
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
 
68
 
67
69
 
68
70
def isoformat_to_datetime(iso):
69
71
    "Parse an ISO 8601 date string to a datetime.datetime()"
78
80
                             int(day),
79
81
                             int(hour),
80
82
                             int(minute),
81
 
                             int(second),           # Whole seconds
82
 
                             int(fraction*1000000)) # Microseconds
 
83
                             int(second),            # Whole seconds
 
84
                             int(fraction*1000000))  # Microseconds
 
85
 
83
86
 
84
87
class MandosClientPropertyCache(object):
85
88
    """This wraps a Mandos Client D-Bus proxy object, caches the
87
90
    changed.
88
91
    """
89
92
    def __init__(self, proxy_object=None, properties=None, **kwargs):
90
 
        self.proxy = proxy_object # Mandos Client proxy object
 
93
        self.proxy = proxy_object  # Mandos Client proxy object
91
94
        self.properties = dict() if properties is None else properties
92
95
        self.property_changed_match = (
93
 
            self.proxy.connect_to_signal("PropertyChanged",
94
 
                                         self._property_changed,
95
 
                                         client_interface,
 
96
            self.proxy.connect_to_signal("PropertiesChanged",
 
97
                                         self.properties_changed,
 
98
                                         dbus.PROPERTIES_IFACE,
96
99
                                         byte_arrays=True))
97
 
        
 
100
 
98
101
        if properties is None:
99
 
            self.properties.update(
100
 
                self.proxy.GetAll(client_interface,
101
 
                                  dbus_interface
102
 
                                  = dbus.PROPERTIES_IFACE))
103
 
        
 
102
            self.properties.update(self.proxy.GetAll(
 
103
                client_interface,
 
104
                dbus_interface=dbus.PROPERTIES_IFACE))
 
105
 
104
106
        super(MandosClientPropertyCache, self).__init__(**kwargs)
105
 
    
106
 
    def _property_changed(self, property, value):
107
 
        """Helper which takes positional arguments"""
108
 
        return self.property_changed(property=property, value=value)
109
 
    
110
 
    def property_changed(self, property=None, value=None):
111
 
        """This is called whenever we get a PropertyChanged signal
112
 
        It updates the changed property in the "properties" dict.
 
107
 
 
108
    def properties_changed(self, interface, properties, invalidated):
 
109
        """This is called whenever we get a PropertiesChanged signal
 
110
        It updates the changed properties in the "properties" dict.
113
111
        """
114
112
        # Update properties dict with new value
115
 
        self.properties[property] = value
116
 
    
 
113
        if interface == client_interface:
 
114
            self.properties.update(properties)
 
115
 
117
116
    def delete(self):
118
117
        self.property_changed_match.remove()
119
118
 
121
120
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
122
121
    """A Mandos Client which is visible on the screen.
123
122
    """
124
 
    
 
123
 
125
124
    def __init__(self, server_proxy_object=None, update_hook=None,
126
125
                 delete_hook=None, logger=None, **kwargs):
127
126
        # Called on update
132
131
        self.server_proxy_object = server_proxy_object
133
132
        # Logger
134
133
        self.logger = logger
135
 
        
 
134
 
136
135
        self._update_timer_callback_tag = None
137
 
        
 
136
 
138
137
        # The widget shown normally
139
138
        self._text_widget = urwid.Text("")
140
139
        # The widget shown when we have focus
142
141
        super(MandosClientWidget, self).__init__(**kwargs)
143
142
        self.update()
144
143
        self.opened = False
145
 
        
 
144
 
146
145
        self.match_objects = (
147
146
            self.proxy.connect_to_signal("CheckerCompleted",
148
147
                                         self.checker_completed,
164
163
                                         self.rejected,
165
164
                                         client_interface,
166
165
                                         byte_arrays=True))
167
 
        #self.logger('Created client {0}'
168
 
        #            .format(self.properties["Name"]))
169
 
    
 
166
        self.logger('Created client {}'
 
167
                    .format(self.properties["Name"]), level=0)
 
168
 
170
169
    def using_timer(self, flag):
171
170
        """Call this method with True or False when timer should be
172
171
        activated or deactivated.
173
172
        """
174
173
        if flag and self._update_timer_callback_tag is None:
175
174
            # Will update the shown timer value every second
176
 
            self._update_timer_callback_tag = (gobject.timeout_add
 
175
            self._update_timer_callback_tag = (GLib.timeout_add
177
176
                                               (1000,
178
177
                                                self.update_timer))
179
178
        elif not (flag or self._update_timer_callback_tag is None):
180
 
            gobject.source_remove(self._update_timer_callback_tag)
 
179
            GLib.source_remove(self._update_timer_callback_tag)
181
180
            self._update_timer_callback_tag = None
182
 
    
 
181
 
183
182
    def checker_completed(self, exitstatus, condition, command):
184
183
        if exitstatus == 0:
 
184
            self.logger('Checker for client {} (command "{}")'
 
185
                        ' succeeded'.format(self.properties["Name"],
 
186
                                            command), level=0)
185
187
            self.update()
186
188
            return
187
189
        # Checker failed
188
190
        if os.WIFEXITED(condition):
189
 
            self.logger('Checker for client {0} (command "{1}")'
190
 
                        ' failed with exit code {2}'
 
191
            self.logger('Checker for client {} (command "{}") failed'
 
192
                        ' with exit code {}'
191
193
                        .format(self.properties["Name"], command,
192
194
                                os.WEXITSTATUS(condition)))
193
195
        elif os.WIFSIGNALED(condition):
194
 
            self.logger('Checker for client {0} (command "{1}") was'
195
 
                        ' killed by signal {2}'
 
196
            self.logger('Checker for client {} (command "{}") was'
 
197
                        ' killed by signal {}'
196
198
                        .format(self.properties["Name"], command,
197
199
                                os.WTERMSIG(condition)))
198
 
        elif os.WCOREDUMP(condition):
199
 
            self.logger('Checker for client {0} (command "{1}")'
200
 
                        ' dumped core'
201
 
                        .format(self.properties["Name"], command))
202
 
        else:
203
 
            self.logger('Checker for client {0} completed'
204
 
                        ' mysteriously'
205
 
                        .format(self.properties["Name"]))
206
200
        self.update()
207
 
    
 
201
 
208
202
    def checker_started(self, command):
209
 
        """Server signals that a checker started. This could be useful
210
 
           to log in the future. """
211
 
        #self.logger('Client {0} started checker "{1}"'
212
 
        #            .format(self.properties["Name"],
213
 
        #                    unicode(command)))
214
 
        pass
215
 
    
 
203
        """Server signals that a checker started."""
 
204
        self.logger('Client {} started checker "{}"'
 
205
                    .format(self.properties["Name"],
 
206
                            command), level=0)
 
207
 
216
208
    def got_secret(self):
217
 
        self.logger('Client {0} received its secret'
 
209
        self.logger('Client {} received its secret'
218
210
                    .format(self.properties["Name"]))
219
 
    
 
211
 
220
212
    def need_approval(self, timeout, default):
221
213
        if not default:
222
 
            message = 'Client {0} needs approval within {1} seconds'
 
214
            message = 'Client {} needs approval within {} seconds'
223
215
        else:
224
 
            message = 'Client {0} will get its secret in {1} seconds'
 
216
            message = 'Client {} will get its secret in {} seconds'
225
217
        self.logger(message.format(self.properties["Name"],
226
218
                                   timeout/1000))
227
 
    
 
219
 
228
220
    def rejected(self, reason):
229
 
        self.logger('Client {0} was rejected; reason: {1}'
 
221
        self.logger('Client {} was rejected; reason: {}'
230
222
                    .format(self.properties["Name"], reason))
231
 
    
 
223
 
232
224
    def selectable(self):
233
225
        """Make this a "selectable" widget.
234
226
        This overrides the method from urwid.FlowWidget."""
235
227
        return True
236
 
    
 
228
 
237
229
    def rows(self, maxcolrow, focus=False):
238
230
        """How many rows this widget will occupy might depend on
239
231
        whether we have focus or not.
240
232
        This overrides the method from urwid.FlowWidget"""
241
233
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
242
 
    
 
234
 
243
235
    def current_widget(self, focus=False):
244
236
        if focus or self.opened:
245
237
            return self._focus_widget
246
238
        return self._widget
247
 
    
 
239
 
248
240
    def update(self):
249
241
        "Called when what is visible on the screen should be updated."
250
242
        # How to add standout mode to a style
251
 
        with_standout = { "normal": "standout",
252
 
                          "bold": "bold-standout",
253
 
                          "underline-blink":
254
 
                              "underline-blink-standout",
255
 
                          "bold-underline-blink":
256
 
                              "bold-underline-blink-standout",
257
 
                          }
258
 
        
 
243
        with_standout = {"normal": "standout",
 
244
                         "bold": "bold-standout",
 
245
                         "underline-blink":
 
246
                         "underline-blink-standout",
 
247
                         "bold-underline-blink":
 
248
                         "bold-underline-blink-standout",
 
249
                         }
 
250
 
259
251
        # Rebuild focus and non-focus widgets using current properties
260
 
        
 
252
 
261
253
        # Base part of a client. Name!
262
254
        base = '{name}: '.format(name=self.properties["Name"])
263
255
        if not self.properties["Enabled"]:
264
256
            message = "DISABLED"
265
257
            self.using_timer(False)
266
258
        elif self.properties["ApprovalPending"]:
267
 
            timeout = datetime.timedelta(milliseconds
268
 
                                         = self.properties
269
 
                                         ["ApprovalDelay"])
 
259
            timeout = datetime.timedelta(
 
260
                milliseconds=self.properties["ApprovalDelay"])
270
261
            last_approval_request = isoformat_to_datetime(
271
262
                self.properties["LastApprovalRequest"])
272
263
            if last_approval_request is not None:
276
267
            else:
277
268
                timer = datetime.timedelta()
278
269
            if self.properties["ApprovedByDefault"]:
279
 
                message = "Approval in {0}. (d)eny?"
 
270
                message = "Approval in {}. (d)eny?"
280
271
            else:
281
 
                message = "Denial in {0}. (a)pprove?"
282
 
            message = message.format(unicode(timer).rsplit(".", 1)[0])
 
272
                message = "Denial in {}. (a)pprove?"
 
273
            message = message.format(str(timer).rsplit(".", 1)[0])
283
274
            self.using_timer(True)
284
275
        elif self.properties["LastCheckerStatus"] != 0:
285
276
            # When checker has failed, show timer until client expires
292
283
                timer = max(expires - datetime.datetime.utcnow(),
293
284
                            datetime.timedelta())
294
285
            message = ('A checker has failed! Time until client'
295
 
                       ' gets disabled: {0}'
296
 
                       .format(unicode(timer).rsplit(".", 1)[0]))
 
286
                       ' gets disabled: {}'
 
287
                       .format(str(timer).rsplit(".", 1)[0]))
297
288
            self.using_timer(True)
298
289
        else:
299
290
            message = "enabled"
300
291
            self.using_timer(False)
301
 
        self._text = "{0}{1}".format(base, message)
302
 
        
 
292
        self._text = "{}{}".format(base, message)
 
293
 
303
294
        if not urwid.supports_unicode():
304
295
            self._text = self._text.encode("ascii", "replace")
305
296
        textlist = [("normal", self._text)]
315
306
        # Run update hook, if any
316
307
        if self.update_hook is not None:
317
308
            self.update_hook()
318
 
    
 
309
 
319
310
    def update_timer(self):
320
 
        """called by gobject. Will indefinitely loop until
321
 
        gobject.source_remove() on tag is called"""
 
311
        """called by GLib. Will indefinitely loop until
 
312
        GLib.source_remove() on tag is called
 
313
        """
322
314
        self.update()
323
315
        return True             # Keep calling this
324
 
    
 
316
 
325
317
    def delete(self, **kwargs):
326
318
        if self._update_timer_callback_tag is not None:
327
 
            gobject.source_remove(self._update_timer_callback_tag)
 
319
            GLib.source_remove(self._update_timer_callback_tag)
328
320
            self._update_timer_callback_tag = None
329
321
        for match in self.match_objects:
330
322
            match.remove()
332
324
        if self.delete_hook is not None:
333
325
            self.delete_hook(self)
334
326
        return super(MandosClientWidget, self).delete(**kwargs)
335
 
    
 
327
 
336
328
    def render(self, maxcolrow, focus=False):
337
329
        """Render differently if we have focus.
338
330
        This overrides the method from urwid.FlowWidget"""
339
331
        return self.current_widget(focus).render(maxcolrow,
340
332
                                                 focus=focus)
341
 
    
 
333
 
342
334
    def keypress(self, maxcolrow, key):
343
335
        """Handle keys.
344
336
        This overrides the method from urwid.FlowWidget"""
345
337
        if key == "+":
346
 
            self.proxy.Enable(dbus_interface = client_interface,
347
 
                              ignore_reply=True)
 
338
            self.proxy.Set(client_interface, "Enabled",
 
339
                           dbus.Boolean(True), ignore_reply=True,
 
340
                           dbus_interface=dbus.PROPERTIES_IFACE)
348
341
        elif key == "-":
349
 
            self.proxy.Disable(dbus_interface = client_interface,
350
 
                               ignore_reply=True)
 
342
            self.proxy.Set(client_interface, "Enabled", False,
 
343
                           ignore_reply=True,
 
344
                           dbus_interface=dbus.PROPERTIES_IFACE)
351
345
        elif key == "a":
352
346
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
353
 
                               dbus_interface = client_interface,
 
347
                               dbus_interface=client_interface,
354
348
                               ignore_reply=True)
355
349
        elif key == "d":
356
350
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
357
 
                                  dbus_interface = client_interface,
 
351
                               dbus_interface=client_interface,
358
352
                               ignore_reply=True)
359
353
        elif key == "R" or key == "_" or key == "ctrl k":
360
354
            self.server_proxy_object.RemoveClient(self.proxy
361
355
                                                  .object_path,
362
356
                                                  ignore_reply=True)
363
357
        elif key == "s":
364
 
            self.proxy.StartChecker(dbus_interface = client_interface,
365
 
                                    ignore_reply=True)
 
358
            self.proxy.Set(client_interface, "CheckerRunning",
 
359
                           dbus.Boolean(True), ignore_reply=True,
 
360
                           dbus_interface=dbus.PROPERTIES_IFACE)
366
361
        elif key == "S":
367
 
            self.proxy.StopChecker(dbus_interface = client_interface,
368
 
                                   ignore_reply=True)
 
362
            self.proxy.Set(client_interface, "CheckerRunning",
 
363
                           dbus.Boolean(False), ignore_reply=True,
 
364
                           dbus_interface=dbus.PROPERTIES_IFACE)
369
365
        elif key == "C":
370
 
            self.proxy.CheckedOK(dbus_interface = client_interface,
 
366
            self.proxy.CheckedOK(dbus_interface=client_interface,
371
367
                                 ignore_reply=True)
372
368
        # xxx
373
369
#         elif key == "p" or key == "=":
378
374
#             self.open()
379
375
        else:
380
376
            return key
381
 
    
382
 
    def property_changed(self, property=None, **kwargs):
383
 
        """Call self.update() if old value is not new value.
 
377
 
 
378
    def properties_changed(self, interface, properties, invalidated):
 
379
        """Call self.update() if any properties changed.
384
380
        This overrides the method from MandosClientPropertyCache"""
385
 
        property_name = unicode(property)
386
 
        old_value = self.properties.get(property_name)
387
 
        super(MandosClientWidget, self).property_changed(
388
 
            property=property, **kwargs)
389
 
        if self.properties.get(property_name) != old_value:
 
381
        old_values = {key: self.properties.get(key)
 
382
                      for key in properties.keys()}
 
383
        super(MandosClientWidget, self).properties_changed(
 
384
            interface, properties, invalidated)
 
385
        if any(old_values[key] != self.properties.get(key)
 
386
               for key in old_values):
390
387
            self.update()
391
388
 
392
389
 
396
393
    use them as an excuse to shift focus away from this widget.
397
394
    """
398
395
    def keypress(self, *args, **kwargs):
399
 
        ret = super(ConstrainedListBox, self).keypress(*args, **kwargs)
 
396
        ret = (super(ConstrainedListBox, self)
 
397
               .keypress(*args, **kwargs))
400
398
        if ret in ("up", "down"):
401
399
            return
402
400
        return ret
406
404
    """This is the entire user interface - the whole screen
407
405
    with boxes, lists of client widgets, etc.
408
406
    """
409
 
    def __init__(self, max_log_length=1000):
 
407
    def __init__(self, max_log_length=1000, log_level=1):
410
408
        DBusGMainLoop(set_as_default=True)
411
 
        
 
409
 
412
410
        self.screen = urwid.curses_display.Screen()
413
 
        
 
411
 
414
412
        self.screen.register_palette((
415
413
                ("normal",
416
414
                 "default", "default", None),
417
415
                ("bold",
418
 
                 "default", "default", "bold"),
 
416
                 "bold", "default", "bold"),
419
417
                ("underline-blink",
420
 
                 "default", "default", "underline"),
 
418
                 "underline,blink", "default", "underline,blink"),
421
419
                ("standout",
422
 
                 "default", "default", "standout"),
 
420
                 "standout", "default", "standout"),
423
421
                ("bold-underline-blink",
424
 
                 "default", "default", ("bold", "underline")),
 
422
                 "bold,underline,blink", "default",
 
423
                 "bold,underline,blink"),
425
424
                ("bold-standout",
426
 
                 "default", "default", ("bold", "standout")),
 
425
                 "bold,standout", "default", "bold,standout"),
427
426
                ("underline-blink-standout",
428
 
                 "default", "default", ("underline", "standout")),
 
427
                 "underline,blink,standout", "default",
 
428
                 "underline,blink,standout"),
429
429
                ("bold-underline-blink-standout",
430
 
                 "default", "default", ("bold", "underline",
431
 
                                          "standout")),
 
430
                 "bold,underline,blink,standout", "default",
 
431
                 "bold,underline,blink,standout"),
432
432
                ))
433
 
        
 
433
 
434
434
        if urwid.supports_unicode():
435
 
            self.divider = "─" # \u2500
436
 
            #self.divider = "━" # \u2501
 
435
            self.divider = "─"  # \u2500
437
436
        else:
438
 
            #self.divider = "-" # \u002d
439
 
            self.divider = "_" # \u005f
440
 
        
 
437
            self.divider = "_"  # \u005f
 
438
 
441
439
        self.screen.start()
442
 
        
 
440
 
443
441
        self.size = self.screen.get_cols_rows()
444
 
        
 
442
 
445
443
        self.clients = urwid.SimpleListWalker([])
446
444
        self.clients_dict = {}
447
 
        
 
445
 
448
446
        # We will add Text widgets to this list
449
447
        self.log = []
450
448
        self.max_log_length = max_log_length
451
 
        
 
449
 
 
450
        self.log_level = log_level
 
451
 
452
452
        # We keep a reference to the log widget so we can remove it
453
453
        # from the ListWalker without it getting destroyed
454
454
        self.logbox = ConstrainedListBox(self.log)
455
 
        
 
455
 
456
456
        # This keeps track of whether self.uilist currently has
457
457
        # self.logbox in it or not
458
458
        self.log_visible = True
459
459
        self.log_wrap = "any"
460
 
        
 
460
 
461
461
        self.rebuild()
462
462
        self.log_message_raw(("bold",
463
463
                              "Mandos Monitor version " + version))
464
464
        self.log_message_raw(("bold",
465
465
                              "q: Quit  ?: Help"))
466
 
        
 
466
 
467
467
        self.busname = domain + '.Mandos'
468
 
        self.main_loop = gobject.MainLoop()
469
 
    
 
468
        self.main_loop = GLib.MainLoop()
 
469
 
470
470
    def client_not_found(self, fingerprint, address):
471
 
        self.log_message("Client with address {0} and fingerprint"
472
 
                         " {1} could not be found"
 
471
        self.log_message("Client with address {} and fingerprint {}"
 
472
                         " could not be found"
473
473
                         .format(address, fingerprint))
474
 
    
 
474
 
475
475
    def rebuild(self):
476
476
        """This rebuilds the User Interface.
477
477
        Call this when the widget layout needs to change"""
478
478
        self.uilist = []
479
 
        #self.uilist.append(urwid.ListBox(self.clients))
 
479
        # self.uilist.append(urwid.ListBox(self.clients))
480
480
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
481
481
                                                          clients),
482
 
                                       #header=urwid.Divider(),
 
482
                                       # header=urwid.Divider(),
483
483
                                       header=None,
484
 
                                       footer=
485
 
                                       urwid.Divider(div_char=
486
 
                                                     self.divider)))
 
484
                                       footer=urwid.Divider(
 
485
                                           div_char=self.divider)))
487
486
        if self.log_visible:
488
487
            self.uilist.append(self.logbox)
489
488
        self.topwidget = urwid.Pile(self.uilist)
490
 
    
491
 
    def log_message(self, message):
 
489
 
 
490
    def log_message(self, message, level=1):
 
491
        """Log message formatted with timestamp"""
 
492
        if level < self.log_level:
 
493
            return
492
494
        timestamp = datetime.datetime.now().isoformat()
493
 
        self.log_message_raw(timestamp + ": " + message)
494
 
    
495
 
    def log_message_raw(self, markup):
 
495
        self.log_message_raw("{}: {}".format(timestamp, message),
 
496
                             level=level)
 
497
 
 
498
    def log_message_raw(self, markup, level=1):
496
499
        """Add a log message to the log buffer."""
 
500
        if level < self.log_level:
 
501
            return
497
502
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
498
 
        if (self.max_log_length
499
 
            and len(self.log) > self.max_log_length):
500
 
            del self.log[0:len(self.log)-self.max_log_length-1]
 
503
        if self.max_log_length:
 
504
            if len(self.log) > self.max_log_length:
 
505
                del self.log[0:len(self.log)-self.max_log_length-1]
501
506
        self.logbox.set_focus(len(self.logbox.body.contents),
502
507
                              coming_from="above")
503
508
        self.refresh()
504
 
    
 
509
 
505
510
    def toggle_log_display(self):
506
511
        """Toggle visibility of the log buffer."""
507
512
        self.log_visible = not self.log_visible
508
513
        self.rebuild()
509
 
        #self.log_message("Log visibility changed to: "
510
 
        #                 + unicode(self.log_visible))
511
 
    
 
514
        self.log_message("Log visibility changed to: {}"
 
515
                         .format(self.log_visible), level=0)
 
516
 
512
517
    def change_log_display(self):
513
518
        """Change type of log display.
514
519
        Currently, this toggles wrapping of text lines."""
518
523
            self.log_wrap = "clip"
519
524
        for textwidget in self.log:
520
525
            textwidget.set_wrap_mode(self.log_wrap)
521
 
        #self.log_message("Wrap mode: " + self.log_wrap)
522
 
    
523
 
    def find_and_remove_client(self, path, name):
 
526
        self.log_message("Wrap mode: {}".format(self.log_wrap),
 
527
                         level=0)
 
528
 
 
529
    def find_and_remove_client(self, path, interfaces):
524
530
        """Find a client by its object path and remove it.
525
 
        
526
 
        This is connected to the ClientRemoved signal from the
 
531
 
 
532
        This is connected to the InterfacesRemoved signal from the
527
533
        Mandos server object."""
 
534
        if client_interface not in interfaces:
 
535
            # Not a Mandos client object; ignore
 
536
            return
528
537
        try:
529
538
            client = self.clients_dict[path]
530
539
        except KeyError:
531
540
            # not found?
532
 
            self.log_message("Unknown client {0!r} ({1!r}) removed"
533
 
                             .format(name, path))
 
541
            self.log_message("Unknown client {!r} removed"
 
542
                             .format(path))
534
543
            return
535
544
        client.delete()
536
 
    
537
 
    def add_new_client(self, path):
 
545
 
 
546
    def add_new_client(self, path, ifs_and_props):
 
547
        """Find a client by its object path and remove it.
 
548
 
 
549
        This is connected to the InterfacesAdded signal from the
 
550
        Mandos server object.
 
551
        """
 
552
        if client_interface not in ifs_and_props:
 
553
            # Not a Mandos client object; ignore
 
554
            return
538
555
        client_proxy_object = self.bus.get_object(self.busname, path)
539
 
        self.add_client(MandosClientWidget(server_proxy_object
540
 
                                           =self.mandos_serv,
541
 
                                           proxy_object
542
 
                                           =client_proxy_object,
543
 
                                           update_hook
544
 
                                           =self.refresh,
545
 
                                           delete_hook
546
 
                                           =self.remove_client,
547
 
                                           logger
548
 
                                           =self.log_message),
 
556
        self.add_client(MandosClientWidget(
 
557
            server_proxy_object=self.mandos_serv,
 
558
            proxy_object=client_proxy_object,
 
559
            update_hook=self.refresh,
 
560
            delete_hook=self.remove_client,
 
561
            logger=self.log_message,
 
562
            properties=dict(ifs_and_props[client_interface])),
549
563
                        path=path)
550
 
    
 
564
 
551
565
    def add_client(self, client, path=None):
552
566
        self.clients.append(client)
553
567
        if path is None:
554
568
            path = client.proxy.object_path
555
569
        self.clients_dict[path] = client
556
 
        self.clients.sort(None, lambda c: c.properties["Name"])
 
570
        self.clients.sort(key=lambda c: c.properties["Name"])
557
571
        self.refresh()
558
 
    
 
572
 
559
573
    def remove_client(self, client, path=None):
560
574
        self.clients.remove(client)
561
575
        if path is None:
562
576
            path = client.proxy.object_path
563
577
        del self.clients_dict[path]
564
 
        if not self.clients_dict:
565
 
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
566
 
            # is completely emptied, we need to recreate it.
567
 
            self.clients = urwid.SimpleListWalker([])
568
 
            self.rebuild()
569
578
        self.refresh()
570
 
    
 
579
 
571
580
    def refresh(self):
572
581
        """Redraw the screen"""
573
582
        canvas = self.topwidget.render(self.size, focus=True)
574
583
        self.screen.draw_screen(self.size, canvas)
575
 
    
 
584
 
576
585
    def run(self):
577
586
        """Start the main loop and exit when it's done."""
578
587
        self.bus = dbus.SystemBus()
579
588
        mandos_dbus_objc = self.bus.get_object(
580
589
            self.busname, "/", follow_name_owner_changes=True)
581
 
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
582
 
                                          dbus_interface
583
 
                                          = server_interface)
 
590
        self.mandos_serv = dbus.Interface(
 
591
            mandos_dbus_objc, dbus_interface=server_interface)
584
592
        try:
585
593
            mandos_clients = (self.mandos_serv
586
594
                              .GetAllClientsWithProperties())
 
595
            if not mandos_clients:
 
596
                self.log_message_raw(("bold",
 
597
                                      "Note: Server has no clients."))
587
598
        except dbus.exceptions.DBusException:
 
599
            self.log_message_raw(("bold",
 
600
                                  "Note: No Mandos server running."))
588
601
            mandos_clients = dbus.Dictionary()
589
 
        
 
602
 
590
603
        (self.mandos_serv
591
 
         .connect_to_signal("ClientRemoved",
 
604
         .connect_to_signal("InterfacesRemoved",
592
605
                            self.find_and_remove_client,
593
 
                            dbus_interface=server_interface,
 
606
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
594
607
                            byte_arrays=True))
595
608
        (self.mandos_serv
596
 
         .connect_to_signal("ClientAdded",
 
609
         .connect_to_signal("InterfacesAdded",
597
610
                            self.add_new_client,
598
 
                            dbus_interface=server_interface,
 
611
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
599
612
                            byte_arrays=True))
600
613
        (self.mandos_serv
601
614
         .connect_to_signal("ClientNotFound",
602
615
                            self.client_not_found,
603
616
                            dbus_interface=server_interface,
604
617
                            byte_arrays=True))
605
 
        for path, client in mandos_clients.iteritems():
 
618
        for path, client in mandos_clients.items():
606
619
            client_proxy_object = self.bus.get_object(self.busname,
607
620
                                                      path)
608
 
            self.add_client(MandosClientWidget(server_proxy_object
609
 
                                               =self.mandos_serv,
610
 
                                               proxy_object
611
 
                                               =client_proxy_object,
612
 
                                               properties=client,
613
 
                                               update_hook
614
 
                                               =self.refresh,
615
 
                                               delete_hook
616
 
                                               =self.remove_client,
617
 
                                               logger
618
 
                                               =self.log_message),
 
621
            self.add_client(MandosClientWidget(
 
622
                server_proxy_object=self.mandos_serv,
 
623
                proxy_object=client_proxy_object,
 
624
                properties=client,
 
625
                update_hook=self.refresh,
 
626
                delete_hook=self.remove_client,
 
627
                logger=self.log_message),
619
628
                            path=path)
620
 
        
 
629
 
621
630
        self.refresh()
622
 
        self._input_callback_tag = (gobject.io_add_watch
 
631
        self._input_callback_tag = (GLib.io_add_watch
623
632
                                    (sys.stdin.fileno(),
624
 
                                     gobject.IO_IN,
 
633
                                     GLib.IO_IN,
625
634
                                     self.process_input))
626
635
        self.main_loop.run()
627
636
        # Main loop has finished, we should close everything now
628
 
        gobject.source_remove(self._input_callback_tag)
 
637
        GLib.source_remove(self._input_callback_tag)
629
638
        self.screen.stop()
630
 
    
 
639
 
631
640
    def stop(self):
632
641
        self.main_loop.quit()
633
 
    
 
642
 
634
643
    def process_input(self, source, condition):
635
644
        keys = self.screen.get_input()
636
 
        translations = { "ctrl n": "down",      # Emacs
637
 
                         "ctrl p": "up",        # Emacs
638
 
                         "ctrl v": "page down", # Emacs
639
 
                         "meta v": "page up",   # Emacs
640
 
                         " ": "page down",      # less
641
 
                         "f": "page down",      # less
642
 
                         "b": "page up",        # less
643
 
                         "j": "down",           # vi
644
 
                         "k": "up",             # vi
645
 
                         }
 
645
        translations = {"ctrl n": "down",       # Emacs
 
646
                        "ctrl p": "up",         # Emacs
 
647
                        "ctrl v": "page down",  # Emacs
 
648
                        "meta v": "page up",    # Emacs
 
649
                        " ": "page down",       # less
 
650
                        "f": "page down",       # less
 
651
                        "b": "page up",         # less
 
652
                        "j": "down",            # vi
 
653
                        "k": "up",              # vi
 
654
                        }
646
655
        for key in keys:
647
656
            try:
648
657
                key = translations[key]
649
658
            except KeyError:    # :-)
650
659
                pass
651
 
            
 
660
 
652
661
            if key == "q" or key == "Q":
653
662
                self.stop()
654
663
                break
655
664
            elif key == "window resize":
656
665
                self.size = self.screen.get_cols_rows()
657
666
                self.refresh()
658
 
            elif key == "\f":  # Ctrl-L
 
667
            elif key == "ctrl l":
 
668
                self.screen.clear()
659
669
                self.refresh()
660
670
            elif key == "l" or key == "D":
661
671
                self.toggle_log_display()
673
683
                                            "?: Help",
674
684
                                            "l: Log window toggle",
675
685
                                            "TAB: Switch window",
676
 
                                            "w: Wrap (log)"))))
 
686
                                            "w: Wrap (log lines)",
 
687
                                            "v: Toggle verbose log",
 
688
                                            ))))
677
689
                self.log_message_raw(("bold",
678
690
                                      "  "
679
691
                                      .join(("Clients:",
692
704
                else:
693
705
                    self.topwidget.set_focus(self.logbox)
694
706
                self.refresh()
695
 
            #elif (key == "end" or key == "meta >" or key == "G"
696
 
            #      or key == ">"):
697
 
            #    pass            # xxx end-of-buffer
698
 
            #elif (key == "home" or key == "meta <" or key == "g"
699
 
            #      or key == "<"):
700
 
            #    pass            # xxx beginning-of-buffer
701
 
            #elif key == "ctrl e" or key == "$":
702
 
            #    pass            # xxx move-end-of-line
703
 
            #elif key == "ctrl a" or key == "^":
704
 
            #    pass            # xxx move-beginning-of-line
705
 
            #elif key == "ctrl b" or key == "meta (" or key == "h":
706
 
            #    pass            # xxx left
707
 
            #elif key == "ctrl f" or key == "meta )" or key == "l":
708
 
            #    pass            # xxx right
709
 
            #elif key == "a":
710
 
            #    pass            # scroll up log
711
 
            #elif key == "z":
712
 
            #    pass            # scroll down log
 
707
            elif key == "v":
 
708
                if self.log_level == 0:
 
709
                    self.log_level = 1
 
710
                    self.log_message("Verbose mode: Off")
 
711
                else:
 
712
                    self.log_level = 0
 
713
                    self.log_message("Verbose mode: On")
 
714
            # elif (key == "end" or key == "meta >" or key == "G"
 
715
            #       or key == ">"):
 
716
            #     pass            # xxx end-of-buffer
 
717
            # elif (key == "home" or key == "meta <" or key == "g"
 
718
            #       or key == "<"):
 
719
            #     pass            # xxx beginning-of-buffer
 
720
            # elif key == "ctrl e" or key == "$":
 
721
            #     pass            # xxx move-end-of-line
 
722
            # elif key == "ctrl a" or key == "^":
 
723
            #     pass            # xxx move-beginning-of-line
 
724
            # elif key == "ctrl b" or key == "meta (" or key == "h":
 
725
            #     pass            # xxx left
 
726
            # elif key == "ctrl f" or key == "meta )" or key == "l":
 
727
            #     pass            # xxx right
 
728
            # elif key == "a":
 
729
            #     pass            # scroll up log
 
730
            # elif key == "z":
 
731
            #     pass            # scroll down log
713
732
            elif self.topwidget.selectable():
714
733
                self.topwidget.keypress(self.size, key)
715
734
                self.refresh()
716
735
        return True
717
736
 
 
737
 
718
738
ui = UserInterface()
719
739
try:
720
740
    ui.run()
721
741
except KeyboardInterrupt:
722
742
    ui.screen.stop()
723
 
except Exception, e:
724
 
    ui.log_message(unicode(e))
 
743
except Exception as e:
 
744
    ui.log_message(str(e))
725
745
    ui.screen.stop()
726
746
    raise