/mandos/trunk

To get this branch, use:
bzr branch http://bzr.recompile.se/loggerhead/mandos/trunk

« back to all changes in this revision

Viewing changes to mandos-monitor

  • Committer: Teddy Hogeborn
  • Date: 2008-07-19 18:43:24 UTC
  • Revision ID: teddy@fukt.bsnet.se-20080719184324-iwhoa5in75xa0u2u
* mandos-clients.conf ([foo]/dn, [foo]/password, [braxen_client]/dn,
                       [braxen_client]/password): Removed.
  ([foo]/fingerprint, [braxen_client]/fingerprint): New.
  ([foo]/checker): New.
  ([foo]/secfile): New.
  ([braxen_client]/secret): New.

* server.py: New "--debug" option to set debug flag.  Removed "cert",
             "key", "ca", "crl", and "cred" variables.  Added default
             value for "checker" config file setting.  Do not pass
             credentials to IPv6_TCPServer constructor.
  (debug): New global debug flag.  Used by most debugging output code.
  (Client.__init__): Keyword argument "dn" replaced by "fingerprint",
                     "password" renamed to "secret", and "passfile"
                     renamed to "secfile".  New keyword argument
                     "checker". All callers changed.
  (Client.dn): Removed.
  (Client.fingerprint): New.
  (Client.password): Renamed to "secret"; all users changed.
  (Client.passfile): Renamed to "secfile"; all users changed.
  (Client.timeout, Client.interval): Changed to be properties; now
                                     automatically updates the
                                     "_timeout_milliseconds" and
                                     "_interval_milliseconds" values.
  (Client.timeout_milliseconds): Renamed to "_timeout_milliseconds".
  (Client.interval_milliseconds): Renamed to "_interval_milliseconds".
  (Client.check_command): New.
  (Client.start_checker): Use the new "check_command" attribute.
  (peer_certificate, fingerprint): New functions.

  (tcp_handler.handle): Use ClientSession with empty credentials
                        object instead of ServerSession.  Set gnutls
                        priority string.  Do not verify peer.  Use
                        fingerprint instead of DN when searching for
                        clients.  Bug fix: Loop sending data so even large
                        secret data strings are sent.
  (IPv6_TCPServer.credentials): Removed.
  (if_nametoindex): Do not import ctypes since that is now imported
                    globally.

Show diffs side-by-side

added added

removed removed

Lines of Context:
mandos-monitor
1
 
#!/usr/bin/python
2
 
# -*- mode: python; coding: utf-8 -*-
3
 
# 
4
 
# Mandos Monitor - Control and monitor the Mandos server
5
 
# 
6
 
# Copyright © 2009-2011 Teddy Hogeborn
7
 
# Copyright © 2009-2011 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
11
 
# the Free Software Foundation, either version 3 of the License, or
12
 
# (at your option) any later version.
13
 
#
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
 
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17
 
#     GNU General Public License for more details.
18
 
# 
19
 
# You should have received a copy of the GNU General Public License
20
 
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
21
 
# 
22
 
# Contact the authors at <mandos@fukt.bsnet.se>.
23
 
# 
24
 
 
25
 
from __future__ import division, absolute_import, print_function, unicode_literals
26
 
 
27
 
import sys
28
 
import os
29
 
import signal
30
 
 
31
 
import datetime
32
 
 
33
 
import urwid.curses_display
34
 
import urwid
35
 
 
36
 
from dbus.mainloop.glib import DBusGMainLoop
37
 
import gobject
38
 
 
39
 
import dbus
40
 
 
41
 
import UserList
42
 
 
43
 
import locale
44
 
 
45
 
locale.setlocale(locale.LC_ALL, '')
46
 
 
47
 
import logging
48
 
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
49
 
 
50
 
# Some useful constants
51
 
domain = 'se.bsnet.fukt'
52
 
server_interface = domain + '.Mandos'
53
 
client_interface = domain + '.Mandos.Client'
54
 
version = "1.3.0"
55
 
 
56
 
# Always run in monochrome mode
57
 
urwid.curses_display.curses.has_colors = lambda : False
58
 
 
59
 
# Urwid doesn't support blinking, but we want it.  Since we have no
60
 
# use for underline on its own, we make underline also always blink.
61
 
urwid.curses_display.curses.A_UNDERLINE |= (
62
 
    urwid.curses_display.curses.A_BLINK)
63
 
 
64
 
def isoformat_to_datetime(iso):
65
 
    "Parse an ISO 8601 date string to a datetime.datetime()"
66
 
    if not iso:
67
 
        return None
68
 
    d, t = iso.split("T", 1)
69
 
    year, month, day = d.split("-", 2)
70
 
    hour, minute, second = t.split(":", 2)
71
 
    second, fraction = divmod(float(second), 1)
72
 
    return datetime.datetime(int(year),
73
 
                             int(month),
74
 
                             int(day),
75
 
                             int(hour),
76
 
                             int(minute),
77
 
                             int(second),           # Whole seconds
78
 
                             int(fraction*1000000)) # Microseconds
79
 
 
80
 
class MandosClientPropertyCache(object):
81
 
    """This wraps a Mandos Client D-Bus proxy object, caches the
82
 
    properties and calls a hook function when any of them are
83
 
    changed.
84
 
    """
85
 
    def __init__(self, proxy_object=None, *args, **kwargs):
86
 
        self.proxy = proxy_object # Mandos Client proxy object
87
 
        
88
 
        self.properties = dict()
89
 
        self.proxy.connect_to_signal("PropertyChanged",
90
 
                                     self.property_changed,
91
 
                                     client_interface,
92
 
                                     byte_arrays=True)
93
 
        
94
 
        self.properties.update(
95
 
            self.proxy.GetAll(client_interface,
96
 
                              dbus_interface = dbus.PROPERTIES_IFACE))
97
 
 
98
 
        #XXX This break good super behaviour!
99
 
#        super(MandosClientPropertyCache, self).__init__(
100
 
#            *args, **kwargs)
101
 
    
102
 
    def property_changed(self, property=None, value=None):
103
 
        """This is called whenever we get a PropertyChanged signal
104
 
        It updates the changed property in the "properties" dict.
105
 
        """
106
 
        # Update properties dict with new value
107
 
        self.properties[property] = value
108
 
 
109
 
 
110
 
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
111
 
    """A Mandos Client which is visible on the screen.
112
 
    """
113
 
    
114
 
    def __init__(self, server_proxy_object=None, update_hook=None,
115
 
                 delete_hook=None, logger=None, *args, **kwargs):
116
 
        # Called on update
117
 
        self.update_hook = update_hook
118
 
        # Called on delete
119
 
        self.delete_hook = delete_hook
120
 
        # Mandos Server proxy object
121
 
        self.server_proxy_object = server_proxy_object
122
 
        # Logger
123
 
        self.logger = logger
124
 
        
125
 
        self._update_timer_callback_tag = None
126
 
        self._update_timer_callback_lock = 0
127
 
        self.last_checker_failed = False
128
 
        
129
 
        # The widget shown normally
130
 
        self._text_widget = urwid.Text("")
131
 
        # The widget shown when we have focus
132
 
        self._focus_text_widget = urwid.Text("")
133
 
        super(MandosClientWidget, self).__init__(
134
 
            update_hook=update_hook, delete_hook=delete_hook,
135
 
            *args, **kwargs)
136
 
        self.update()
137
 
        self.opened = False
138
 
        
139
 
        last_checked_ok = isoformat_to_datetime(self.properties
140
 
                                                ["LastCheckedOK"])
141
 
        if last_checked_ok is None:
142
 
            self.last_checker_failed = True
143
 
        else:
144
 
            self.last_checker_failed = ((datetime.datetime.utcnow()
145
 
                                         - last_checked_ok)
146
 
                                        > datetime.timedelta
147
 
                                        (milliseconds=
148
 
                                         self.properties
149
 
                                         ["Interval"]))
150
 
        
151
 
        if self.last_checker_failed:
152
 
            self.using_timer(True)
153
 
        
154
 
        if self.need_approval:
155
 
            self.using_timer(True)
156
 
        
157
 
        self.proxy.connect_to_signal("CheckerCompleted",
158
 
                                     self.checker_completed,
159
 
                                     client_interface,
160
 
                                     byte_arrays=True)
161
 
        self.proxy.connect_to_signal("CheckerStarted",
162
 
                                     self.checker_started,
163
 
                                     client_interface,
164
 
                                     byte_arrays=True)
165
 
        self.proxy.connect_to_signal("GotSecret",
166
 
                                     self.got_secret,
167
 
                                     client_interface,
168
 
                                     byte_arrays=True)
169
 
        self.proxy.connect_to_signal("NeedApproval",
170
 
                                     self.need_approval,
171
 
                                     client_interface,
172
 
                                     byte_arrays=True)
173
 
        self.proxy.connect_to_signal("Rejected",
174
 
                                     self.rejected,
175
 
                                     client_interface,
176
 
                                     byte_arrays=True)
177
 
    
178
 
    def property_changed(self, property=None, value=None):
179
 
        super(self, MandosClientWidget).property_changed(property,
180
 
                                                         value)
181
 
        if property == "ApprovalPending":
182
 
            using_timer(bool(value))
183
 
        
184
 
    def using_timer(self, flag):
185
 
        """Call this method with True or False when timer should be
186
 
        activated or deactivated.
187
 
        """
188
 
        old = self._update_timer_callback_lock
189
 
        if flag:
190
 
            self._update_timer_callback_lock += 1
191
 
        else:
192
 
            self._update_timer_callback_lock -= 1
193
 
        if old == 0 and self._update_timer_callback_lock:
194
 
            self._update_timer_callback_tag = (gobject.timeout_add
195
 
                                               (1000,
196
 
                                                self.update_timer))
197
 
        elif old and self._update_timer_callback_lock == 0:
198
 
            gobject.source_remove(self._update_timer_callback_tag)
199
 
            self._update_timer_callback_tag = None
200
 
    
201
 
    def checker_completed(self, exitstatus, condition, command):
202
 
        if exitstatus == 0:
203
 
            if self.last_checker_failed:
204
 
                self.last_checker_failed = False
205
 
                self.using_timer(False)
206
 
            #self.logger('Checker for client %s (command "%s")'
207
 
            #            ' was successful'
208
 
            #            % (self.properties["Name"], command))
209
 
            self.update()
210
 
            return
211
 
        # Checker failed
212
 
        if not self.last_checker_failed:
213
 
            self.last_checker_failed = True
214
 
            self.using_timer(True)
215
 
        if os.WIFEXITED(condition):
216
 
            self.logger('Checker for client %s (command "%s")'
217
 
                        ' failed with exit code %s'
218
 
                        % (self.properties["Name"], command,
219
 
                           os.WEXITSTATUS(condition)))
220
 
        elif os.WIFSIGNALED(condition):
221
 
            self.logger('Checker for client %s (command "%s")'
222
 
                        ' was killed by signal %s'
223
 
                        % (self.properties["Name"], command,
224
 
                           os.WTERMSIG(condition)))
225
 
        elif os.WCOREDUMP(condition):
226
 
            self.logger('Checker for client %s (command "%s")'
227
 
                        ' dumped core'
228
 
                        % (self.properties["Name"], command))
229
 
        else:
230
 
            self.logger('Checker for client %s completed'
231
 
                        ' mysteriously')
232
 
        self.update()
233
 
    
234
 
    def checker_started(self, command):
235
 
        #self.logger('Client %s started checker "%s"'
236
 
        #            % (self.properties["Name"], unicode(command)))
237
 
        pass
238
 
    
239
 
    def got_secret(self):
240
 
        self.last_checker_failed = False
241
 
        self.logger('Client %s received its secret'
242
 
                    % self.properties["Name"])
243
 
    
244
 
    def need_approval(self, timeout, default):
245
 
        if not default:
246
 
            message = 'Client %s needs approval within %s seconds'
247
 
        else:
248
 
            message = 'Client %s will get its secret in %s seconds'
249
 
        self.logger(message
250
 
                    % (self.properties["Name"], timeout/1000))
251
 
        self.using_timer(True)
252
 
    
253
 
    def rejected(self, reason):
254
 
        self.logger('Client %s was rejected; reason: %s'
255
 
                    % (self.properties["Name"], reason))
256
 
    
257
 
    def selectable(self):
258
 
        """Make this a "selectable" widget.
259
 
        This overrides the method from urwid.FlowWidget."""
260
 
        return True
261
 
    
262
 
    def rows(self, maxcolrow, focus=False):
263
 
        """How many rows this widget will occupy might depend on
264
 
        whether we have focus or not.
265
 
        This overrides the method from urwid.FlowWidget"""
266
 
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
267
 
    
268
 
    def current_widget(self, focus=False):
269
 
        if focus or self.opened:
270
 
            return self._focus_widget
271
 
        return self._widget
272
 
    
273
 
    def update(self):
274
 
        "Called when what is visible on the screen should be updated."
275
 
        # How to add standout mode to a style
276
 
        with_standout = { "normal": "standout",
277
 
                          "bold": "bold-standout",
278
 
                          "underline-blink":
279
 
                              "underline-blink-standout",
280
 
                          "bold-underline-blink":
281
 
                              "bold-underline-blink-standout",
282
 
                          }
283
 
 
284
 
        # Rebuild focus and non-focus widgets using current properties
285
 
 
286
 
        # Base part of a client. Name!
287
 
        base = ('%(name)s: '
288
 
                      % {"name": self.properties["Name"]})
289
 
        if not self.properties["Enabled"]:
290
 
            message = "DISABLED"
291
 
        elif self.properties["ApprovalPending"]:
292
 
            timeout = datetime.timedelta(milliseconds
293
 
                                         = self.properties
294
 
                                         ["ApprovalDelay"])
295
 
            last_approval_request = isoformat_to_datetime(
296
 
                self.properties["LastApprovalRequest"])
297
 
            if last_approval_request is not None:
298
 
                timer = timeout - (datetime.datetime.utcnow()
299
 
                                   - last_approval_request)
300
 
            else:
301
 
                timer = datetime.timedelta()
302
 
            if self.properties["ApprovedByDefault"]:
303
 
                message = "Approval in %s. (d)eny?"
304
 
            else:
305
 
                message = "Denial in %s. (a)pprove?"
306
 
            message = message % unicode(timer).rsplit(".", 1)[0]
307
 
        elif self.last_checker_failed:
308
 
            timeout = datetime.timedelta(milliseconds
309
 
                                         = self.properties
310
 
                                         ["Timeout"])
311
 
            last_ok = isoformat_to_datetime(
312
 
                max((self.properties["LastCheckedOK"]
313
 
                     or self.properties["Created"]),
314
 
                    self.properties["LastEnabled"]))
315
 
            timer = timeout - (datetime.datetime.utcnow() - last_ok)
316
 
            message = ('A checker has failed! Time until client'
317
 
                       ' gets disabled: %s'
318
 
                           % unicode(timer).rsplit(".", 1)[0])
319
 
        else:
320
 
            message = "enabled"
321
 
        self._text = "%s%s" % (base, message)
322
 
            
323
 
        if not urwid.supports_unicode():
324
 
            self._text = self._text.encode("ascii", "replace")
325
 
        textlist = [("normal", self._text)]
326
 
        self._text_widget.set_text(textlist)
327
 
        self._focus_text_widget.set_text([(with_standout[text[0]],
328
 
                                           text[1])
329
 
                                          if isinstance(text, tuple)
330
 
                                          else text
331
 
                                          for text in textlist])
332
 
        self._widget = self._text_widget
333
 
        self._focus_widget = urwid.AttrWrap(self._focus_text_widget,
334
 
                                            "standout")
335
 
        # Run update hook, if any
336
 
        if self.update_hook is not None:
337
 
            self.update_hook()
338
 
    
339
 
    def update_timer(self):
340
 
        "called by gobject"
341
 
        self.update()
342
 
        return True             # Keep calling this
343
 
    
344
 
    def delete(self):
345
 
        if self._update_timer_callback_tag is not None:
346
 
            gobject.source_remove(self._update_timer_callback_tag)
347
 
            self._update_timer_callback_tag = None
348
 
        if self.delete_hook is not None:
349
 
            self.delete_hook(self)
350
 
    
351
 
    def render(self, maxcolrow, focus=False):
352
 
        """Render differently if we have focus.
353
 
        This overrides the method from urwid.FlowWidget"""
354
 
        return self.current_widget(focus).render(maxcolrow,
355
 
                                                 focus=focus)
356
 
    
357
 
    def keypress(self, maxcolrow, key):
358
 
        """Handle keys.
359
 
        This overrides the method from urwid.FlowWidget"""
360
 
        if key == "+":
361
 
            self.proxy.Enable(dbus_interface = client_interface,
362
 
                              ignore_reply=True)
363
 
        elif key == "-":
364
 
            self.proxy.Disable(dbus_interface = client_interface,
365
 
                               ignore_reply=True)
366
 
        elif key == "a":
367
 
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
368
 
                               dbus_interface = client_interface,
369
 
                               ignore_reply=True)
370
 
        elif key == "d":
371
 
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
372
 
                                  dbus_interface = client_interface,
373
 
                               ignore_reply=True)
374
 
        elif key == "R" or key == "_" or key == "ctrl k":
375
 
            self.server_proxy_object.RemoveClient(self.proxy
376
 
                                                  .object_path,
377
 
                                                  ignore_reply=True)
378
 
        elif key == "s":
379
 
            self.proxy.StartChecker(dbus_interface = client_interface,
380
 
                                    ignore_reply=True)
381
 
        elif key == "S":
382
 
            self.proxy.StopChecker(dbus_interface = client_interface,
383
 
                                   ignore_reply=True)
384
 
        elif key == "C":
385
 
            self.proxy.CheckedOK(dbus_interface = client_interface,
386
 
                                 ignore_reply=True)
387
 
        # xxx
388
 
#         elif key == "p" or key == "=":
389
 
#             self.proxy.pause()
390
 
#         elif key == "u" or key == ":":
391
 
#             self.proxy.unpause()
392
 
#         elif key == "RET":
393
 
#             self.open()
394
 
        else:
395
 
            return key
396
 
    
397
 
    def property_changed(self, property=None, value=None,
398
 
                         *args, **kwargs):
399
 
        """Call self.update() if old value is not new value.
400
 
        This overrides the method from MandosClientPropertyCache"""
401
 
        property_name = unicode(property)
402
 
        old_value = self.properties.get(property_name)
403
 
        super(MandosClientWidget, self).property_changed(
404
 
            property=property, value=value, *args, **kwargs)
405
 
        if self.properties.get(property_name) != old_value:
406
 
            self.update()
407
 
 
408
 
 
409
 
class ConstrainedListBox(urwid.ListBox):
410
 
    """Like a normal urwid.ListBox, but will consume all "up" or
411
 
    "down" key presses, thus not allowing any containing widgets to
412
 
    use them as an excuse to shift focus away from this widget.
413
 
    """
414
 
    def keypress(self, maxcolrow, key):
415
 
        ret = super(ConstrainedListBox, self).keypress(maxcolrow, key)
416
 
        if ret in ("up", "down"):
417
 
            return
418
 
        return ret
419
 
 
420
 
 
421
 
class UserInterface(object):
422
 
    """This is the entire user interface - the whole screen
423
 
    with boxes, lists of client widgets, etc.
424
 
    """
425
 
    def __init__(self, max_log_length=1000):
426
 
        DBusGMainLoop(set_as_default=True)
427
 
        
428
 
        self.screen = urwid.curses_display.Screen()
429
 
        
430
 
        self.screen.register_palette((
431
 
                ("normal",
432
 
                 "default", "default", None),
433
 
                ("bold",
434
 
                 "default", "default", "bold"),
435
 
                ("underline-blink",
436
 
                 "default", "default", "underline"),
437
 
                ("standout",
438
 
                 "default", "default", "standout"),
439
 
                ("bold-underline-blink",
440
 
                 "default", "default", ("bold", "underline")),
441
 
                ("bold-standout",
442
 
                 "default", "default", ("bold", "standout")),
443
 
                ("underline-blink-standout",
444
 
                 "default", "default", ("underline", "standout")),
445
 
                ("bold-underline-blink-standout",
446
 
                 "default", "default", ("bold", "underline",
447
 
                                          "standout")),
448
 
                ))
449
 
        
450
 
        if urwid.supports_unicode():
451
 
            self.divider = "─" # \u2500
452
 
            #self.divider = "━" # \u2501
453
 
        else:
454
 
            #self.divider = "-" # \u002d
455
 
            self.divider = "_" # \u005f
456
 
        
457
 
        self.screen.start()
458
 
        
459
 
        self.size = self.screen.get_cols_rows()
460
 
        
461
 
        self.clients = urwid.SimpleListWalker([])
462
 
        self.clients_dict = {}
463
 
        
464
 
        # We will add Text widgets to this list
465
 
        self.log = []
466
 
        self.max_log_length = max_log_length
467
 
        
468
 
        # We keep a reference to the log widget so we can remove it
469
 
        # from the ListWalker without it getting destroyed
470
 
        self.logbox = ConstrainedListBox(self.log)
471
 
        
472
 
        # This keeps track of whether self.uilist currently has
473
 
        # self.logbox in it or not
474
 
        self.log_visible = True
475
 
        self.log_wrap = "any"
476
 
        
477
 
        self.rebuild()
478
 
        self.log_message_raw(("bold",
479
 
                              "Mandos Monitor version " + version))
480
 
        self.log_message_raw(("bold",
481
 
                              "q: Quit  ?: Help"))
482
 
        
483
 
        self.busname = domain + '.Mandos'
484
 
        self.main_loop = gobject.MainLoop()
485
 
        self.bus = dbus.SystemBus()
486
 
        mandos_dbus_objc = self.bus.get_object(
487
 
            self.busname, "/", follow_name_owner_changes=True)
488
 
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
489
 
                                          dbus_interface
490
 
                                          = server_interface)
491
 
        try:
492
 
            mandos_clients = (self.mandos_serv
493
 
                              .GetAllClientsWithProperties())
494
 
        except dbus.exceptions.DBusException:
495
 
            mandos_clients = dbus.Dictionary()
496
 
        
497
 
        (self.mandos_serv
498
 
         .connect_to_signal("ClientRemoved",
499
 
                            self.find_and_remove_client,
500
 
                            dbus_interface=server_interface,
501
 
                            byte_arrays=True))
502
 
        (self.mandos_serv
503
 
         .connect_to_signal("ClientAdded",
504
 
                            self.add_new_client,
505
 
                            dbus_interface=server_interface,
506
 
                            byte_arrays=True))
507
 
        (self.mandos_serv
508
 
         .connect_to_signal("ClientNotFound",
509
 
                            self.client_not_found,
510
 
                            dbus_interface=server_interface,
511
 
                            byte_arrays=True))
512
 
        for path, client in mandos_clients.iteritems():
513
 
            client_proxy_object = self.bus.get_object(self.busname,
514
 
                                                      path)
515
 
            self.add_client(MandosClientWidget(server_proxy_object
516
 
                                               =self.mandos_serv,
517
 
                                               proxy_object
518
 
                                               =client_proxy_object,
519
 
                                               properties=client,
520
 
                                               update_hook
521
 
                                               =self.refresh,
522
 
                                               delete_hook
523
 
                                               =self.remove_client,
524
 
                                               logger
525
 
                                               =self.log_message),
526
 
                            path=path)
527
 
    
528
 
    def client_not_found(self, fingerprint, address):
529
 
        self.log_message(("Client with address %s and fingerprint %s"
530
 
                          " could not be found" % (address,
531
 
                                                    fingerprint)))
532
 
    
533
 
    def rebuild(self):
534
 
        """This rebuilds the User Interface.
535
 
        Call this when the widget layout needs to change"""
536
 
        self.uilist = []
537
 
        #self.uilist.append(urwid.ListBox(self.clients))
538
 
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
539
 
                                                          clients),
540
 
                                       #header=urwid.Divider(),
541
 
                                       header=None,
542
 
                                       footer=
543
 
                                       urwid.Divider(div_char=
544
 
                                                     self.divider)))
545
 
        if self.log_visible:
546
 
            self.uilist.append(self.logbox)
547
 
            pass
548
 
        self.topwidget = urwid.Pile(self.uilist)
549
 
    
550
 
    def log_message(self, message):
551
 
        timestamp = datetime.datetime.now().isoformat()
552
 
        self.log_message_raw(timestamp + ": " + message)
553
 
    
554
 
    def log_message_raw(self, markup):
555
 
        """Add a log message to the log buffer."""
556
 
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
557
 
        if (self.max_log_length
558
 
            and len(self.log) > self.max_log_length):
559
 
            del self.log[0:len(self.log)-self.max_log_length-1]
560
 
        self.logbox.set_focus(len(self.logbox.body.contents),
561
 
                              coming_from="above")
562
 
        self.refresh()
563
 
    
564
 
    def toggle_log_display(self):
565
 
        """Toggle visibility of the log buffer."""
566
 
        self.log_visible = not self.log_visible
567
 
        self.rebuild()
568
 
        #self.log_message("Log visibility changed to: "
569
 
        #                 + unicode(self.log_visible))
570
 
    
571
 
    def change_log_display(self):
572
 
        """Change type of log display.
573
 
        Currently, this toggles wrapping of text lines."""
574
 
        if self.log_wrap == "clip":
575
 
            self.log_wrap = "any"
576
 
        else:
577
 
            self.log_wrap = "clip"
578
 
        for textwidget in self.log:
579
 
            textwidget.set_wrap_mode(self.log_wrap)
580
 
        #self.log_message("Wrap mode: " + self.log_wrap)
581
 
    
582
 
    def find_and_remove_client(self, path, name):
583
 
        """Find an client from its object path and remove it.
584
 
        
585
 
        This is connected to the ClientRemoved signal from the
586
 
        Mandos server object."""
587
 
        try:
588
 
            client = self.clients_dict[path]
589
 
        except KeyError:
590
 
            # not found?
591
 
            return
592
 
        self.remove_client(client, path)
593
 
    
594
 
    def add_new_client(self, path):
595
 
        client_proxy_object = self.bus.get_object(self.busname, path)
596
 
        self.add_client(MandosClientWidget(server_proxy_object
597
 
                                           =self.mandos_serv,
598
 
                                           proxy_object
599
 
                                           =client_proxy_object,
600
 
                                           update_hook
601
 
                                           =self.refresh,
602
 
                                           delete_hook
603
 
                                           =self.remove_client,
604
 
                                           logger
605
 
                                           =self.log_message),
606
 
                        path=path)
607
 
    
608
 
    def add_client(self, client, path=None):
609
 
        self.clients.append(client)
610
 
        if path is None:
611
 
            path = client.proxy.object_path
612
 
        self.clients_dict[path] = client
613
 
        self.clients.sort(None, lambda c: c.properties["Name"])
614
 
        self.refresh()
615
 
    
616
 
    def remove_client(self, client, path=None):
617
 
        self.clients.remove(client)
618
 
        if path is None:
619
 
            path = client.proxy.object_path
620
 
        del self.clients_dict[path]
621
 
        if not self.clients_dict:
622
 
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
623
 
            # is completely emptied, we need to recreate it.
624
 
            self.clients = urwid.SimpleListWalker([])
625
 
            self.rebuild()
626
 
        self.refresh()
627
 
    
628
 
    def refresh(self):
629
 
        """Redraw the screen"""
630
 
        canvas = self.topwidget.render(self.size, focus=True)
631
 
        self.screen.draw_screen(self.size, canvas)
632
 
    
633
 
    def run(self):
634
 
        """Start the main loop and exit when it's done."""
635
 
        self.refresh()
636
 
        self._input_callback_tag = (gobject.io_add_watch
637
 
                                    (sys.stdin.fileno(),
638
 
                                     gobject.IO_IN,
639
 
                                     self.process_input))
640
 
        self.main_loop.run()
641
 
        # Main loop has finished, we should close everything now
642
 
        gobject.source_remove(self._input_callback_tag)
643
 
        self.screen.stop()
644
 
    
645
 
    def stop(self):
646
 
        self.main_loop.quit()
647
 
    
648
 
    def process_input(self, source, condition):
649
 
        keys = self.screen.get_input()
650
 
        translations = { "ctrl n": "down",      # Emacs
651
 
                         "ctrl p": "up",        # Emacs
652
 
                         "ctrl v": "page down", # Emacs
653
 
                         "meta v": "page up",   # Emacs
654
 
                         " ": "page down",      # less
655
 
                         "f": "page down",      # less
656
 
                         "b": "page up",        # less
657
 
                         "j": "down",           # vi
658
 
                         "k": "up",             # vi
659
 
                         }
660
 
        for key in keys:
661
 
            try:
662
 
                key = translations[key]
663
 
            except KeyError:    # :-)
664
 
                pass
665
 
            
666
 
            if key == "q" or key == "Q":
667
 
                self.stop()
668
 
                break
669
 
            elif key == "window resize":
670
 
                self.size = self.screen.get_cols_rows()
671
 
                self.refresh()
672
 
            elif key == "\f":  # Ctrl-L
673
 
                self.refresh()
674
 
            elif key == "l" or key == "D":
675
 
                self.toggle_log_display()
676
 
                self.refresh()
677
 
            elif key == "w" or key == "i":
678
 
                self.change_log_display()
679
 
                self.refresh()
680
 
            elif key == "?" or key == "f1" or key == "esc":
681
 
                if not self.log_visible:
682
 
                    self.log_visible = True
683
 
                    self.rebuild()
684
 
                self.log_message_raw(("bold",
685
 
                                      "  ".
686
 
                                      join(("q: Quit",
687
 
                                            "?: Help",
688
 
                                            "l: Log window toggle",
689
 
                                            "TAB: Switch window",
690
 
                                            "w: Wrap (log)"))))
691
 
                self.log_message_raw(("bold",
692
 
                                      "  "
693
 
                                      .join(("Clients:",
694
 
                                             "+: Enable",
695
 
                                             "-: Disable",
696
 
                                             "R: Remove",
697
 
                                             "s: Start new checker",
698
 
                                             "S: Stop checker",
699
 
                                             "C: Checker OK",
700
 
                                             "a: Approve",
701
 
                                             "d: Deny"))))
702
 
                self.refresh()
703
 
            elif key == "tab":
704
 
                if self.topwidget.get_focus() is self.logbox:
705
 
                    self.topwidget.set_focus(0)
706
 
                else:
707
 
                    self.topwidget.set_focus(self.logbox)
708
 
                self.refresh()
709
 
            #elif (key == "end" or key == "meta >" or key == "G"
710
 
            #      or key == ">"):
711
 
            #    pass            # xxx end-of-buffer
712
 
            #elif (key == "home" or key == "meta <" or key == "g"
713
 
            #      or key == "<"):
714
 
            #    pass            # xxx beginning-of-buffer
715
 
            #elif key == "ctrl e" or key == "$":
716
 
            #    pass            # xxx move-end-of-line
717
 
            #elif key == "ctrl a" or key == "^":
718
 
            #    pass            # xxx move-beginning-of-line
719
 
            #elif key == "ctrl b" or key == "meta (" or key == "h":
720
 
            #    pass            # xxx left
721
 
            #elif key == "ctrl f" or key == "meta )" or key == "l":
722
 
            #    pass            # xxx right
723
 
            #elif key == "a":
724
 
            #    pass            # scroll up log
725
 
            #elif key == "z":
726
 
            #    pass            # scroll down log
727
 
            elif self.topwidget.selectable():
728
 
                self.topwidget.keypress(self.size, key)
729
 
                self.refresh()
730
 
        return True
731
 
 
732
 
ui = UserInterface()
733
 
try:
734
 
    ui.run()
735
 
except KeyboardInterrupt:
736
 
    ui.screen.stop()
737
 
except Exception, e:
738
 
    ui.log_message(unicode(e))
739
 
    ui.screen.stop()
740
 
    raise