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  • Committer: Teddy Hogeborn
  • Date: 2015-05-31 15:56:58 UTC
  • Revision ID: teddy@recompile.se-20150531155658-l7znu7zlqr2dmuwd
mandos: Generate better messages in exceptions.

mandos (ProxyClient.__init__): Include fingerprint in KeyError().
(rfc3339_duration_to_delta): Include duration in ValueError().

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mandos-monitor
3
3
# 
4
4
# Mandos Monitor - Control and monitor the Mandos server
5
5
# 
6
 
# Copyright © 2009-2011 Teddy Hogeborn
7
 
# Copyright © 2009-2011 Björn Påhlsson
 
6
# Copyright © 2009-2014 Teddy Hogeborn
 
7
# Copyright © 2009-2014 Björn Påhlsson
8
8
# 
9
9
# This program is free software: you can redistribute it and/or modify
10
10
# it under the terms of the GNU General Public License as published by
17
17
#     GNU General Public License for more details.
18
18
# 
19
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/>.
 
20
# along with this program.  If not, see
 
21
# <http://www.gnu.org/licenses/>.
21
22
# 
22
23
# Contact the authors at <mandos@recompile.se>.
23
24
# 
24
25
 
25
26
from __future__ import (division, absolute_import, print_function,
26
27
                        unicode_literals)
 
28
try:
 
29
    from future_builtins import *
 
30
except ImportError:
 
31
    pass
27
32
 
28
33
import sys
29
34
import os
30
 
import signal
31
35
 
32
36
import datetime
33
37
 
35
39
import urwid
36
40
 
37
41
from dbus.mainloop.glib import DBusGMainLoop
38
 
import gobject
 
42
try:
 
43
    import gobject
 
44
except ImportError:
 
45
    from gi.repository import GObject as gobject
39
46
 
40
47
import dbus
41
48
 
42
 
import UserList
43
 
 
44
49
import locale
45
50
 
 
51
if sys.version_info.major == 2:
 
52
    str = unicode
 
53
 
46
54
locale.setlocale(locale.LC_ALL, '')
47
55
 
48
56
import logging
52
60
domain = 'se.recompile'
53
61
server_interface = domain + '.Mandos'
54
62
client_interface = domain + '.Mandos.Client'
55
 
version = "1.4.1"
56
 
 
57
 
# Always run in monochrome mode
58
 
urwid.curses_display.curses.has_colors = lambda : False
59
 
 
60
 
# Urwid doesn't support blinking, but we want it.  Since we have no
61
 
# use for underline on its own, we make underline also always blink.
62
 
urwid.curses_display.curses.A_UNDERLINE |= (
63
 
    urwid.curses_display.curses.A_BLINK)
 
63
version = "1.6.9"
64
64
 
65
65
def isoformat_to_datetime(iso):
66
66
    "Parse an ISO 8601 date string to a datetime.datetime()"
83
83
    properties and calls a hook function when any of them are
84
84
    changed.
85
85
    """
86
 
    def __init__(self, proxy_object=None, *args, **kwargs):
 
86
    def __init__(self, proxy_object=None, properties=None, **kwargs):
87
87
        self.proxy = proxy_object # Mandos Client proxy object
88
 
        
89
 
        self.properties = dict()
 
88
        self.properties = dict() if properties is None else properties
90
89
        self.property_changed_match = (
91
 
            self.proxy.connect_to_signal("PropertyChanged",
92
 
                                         self.property_changed,
93
 
                                         client_interface,
 
90
            self.proxy.connect_to_signal("PropertiesChanged",
 
91
                                         self.properties_changed,
 
92
                                         dbus.PROPERTIES_IFACE,
94
93
                                         byte_arrays=True))
95
94
        
96
 
        self.properties.update(
97
 
            self.proxy.GetAll(client_interface,
98
 
                              dbus_interface = dbus.PROPERTIES_IFACE))
99
 
 
100
 
        #XXX This breaks good super behaviour
101
 
#        super(MandosClientPropertyCache, self).__init__(
102
 
#            *args, **kwargs)
 
95
        if properties is None:
 
96
            self.properties.update(
 
97
                self.proxy.GetAll(client_interface,
 
98
                                  dbus_interface
 
99
                                  = dbus.PROPERTIES_IFACE))
 
100
        
 
101
        super(MandosClientPropertyCache, self).__init__(**kwargs)
103
102
    
104
 
    def property_changed(self, property=None, value=None):
105
 
        """This is called whenever we get a PropertyChanged signal
106
 
        It updates the changed property in the "properties" dict.
 
103
    def properties_changed(self, interface, properties, invalidated):
 
104
        """This is called whenever we get a PropertiesChanged signal
 
105
        It updates the changed properties in the "properties" dict.
107
106
        """
108
107
        # Update properties dict with new value
109
 
        self.properties[property] = value
 
108
        self.properties.update(properties)
110
109
    
111
 
    def delete(self, *args, **kwargs):
 
110
    def delete(self):
112
111
        self.property_changed_match.remove()
113
 
        super(MandosClientPropertyCache, self).__init__(
114
 
            *args, **kwargs)
115
112
 
116
113
 
117
114
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
119
116
    """
120
117
    
121
118
    def __init__(self, server_proxy_object=None, update_hook=None,
122
 
                 delete_hook=None, logger=None, *args, **kwargs):
 
119
                 delete_hook=None, logger=None, **kwargs):
123
120
        # Called on update
124
121
        self.update_hook = update_hook
125
122
        # Called on delete
130
127
        self.logger = logger
131
128
        
132
129
        self._update_timer_callback_tag = None
133
 
        self._update_timer_callback_lock = 0
134
 
        self.last_checker_failed = False
135
130
        
136
131
        # The widget shown normally
137
132
        self._text_widget = urwid.Text("")
138
133
        # The widget shown when we have focus
139
134
        self._focus_text_widget = urwid.Text("")
140
 
        super(MandosClientWidget, self).__init__(
141
 
            update_hook=update_hook, delete_hook=delete_hook,
142
 
            *args, **kwargs)
 
135
        super(MandosClientWidget, self).__init__(**kwargs)
143
136
        self.update()
144
137
        self.opened = False
145
138
        
146
 
        last_checked_ok = isoformat_to_datetime(self.properties
147
 
                                                ["LastCheckedOK"])
148
 
        if last_checked_ok is None:
149
 
            self.last_checker_failed = True
150
 
        else:
151
 
            self.last_checker_failed = ((datetime.datetime.utcnow()
152
 
                                         - last_checked_ok)
153
 
                                        > datetime.timedelta
154
 
                                        (milliseconds=
155
 
                                         self.properties
156
 
                                         ["Interval"]))
157
 
        
158
 
        if self.last_checker_failed:
159
 
            self.using_timer(True)
160
 
        
161
 
        if self.need_approval:
162
 
            self.using_timer(True)
163
 
        
164
139
        self.match_objects = (
165
140
            self.proxy.connect_to_signal("CheckerCompleted",
166
141
                                         self.checker_completed,
182
157
                                         self.rejected,
183
158
                                         client_interface,
184
159
                                         byte_arrays=True))
185
 
        #self.logger('Created client %s' % (self.properties["Name"]))
 
160
        self.logger('Created client {}'
 
161
                    .format(self.properties["Name"]), level=0)
186
162
    
187
 
    def property_changed(self, property=None, value=None):
188
 
        super(self, MandosClientWidget).property_changed(property,
189
 
                                                         value)
190
 
        if property == "ApprovalPending":
191
 
            using_timer(bool(value))
192
 
        
193
163
    def using_timer(self, flag):
194
164
        """Call this method with True or False when timer should be
195
165
        activated or deactivated.
196
166
        """
197
 
        old = self._update_timer_callback_lock
198
 
        if flag:
199
 
            self._update_timer_callback_lock += 1
200
 
        else:
201
 
            self._update_timer_callback_lock -= 1
202
 
        if old == 0 and self._update_timer_callback_lock:
 
167
        if flag and self._update_timer_callback_tag is None:
203
168
            # Will update the shown timer value every second
204
169
            self._update_timer_callback_tag = (gobject.timeout_add
205
170
                                               (1000,
206
171
                                                self.update_timer))
207
 
        elif old and self._update_timer_callback_lock == 0:
 
172
        elif not (flag or self._update_timer_callback_tag is None):
208
173
            gobject.source_remove(self._update_timer_callback_tag)
209
174
            self._update_timer_callback_tag = None
210
175
    
211
176
    def checker_completed(self, exitstatus, condition, command):
212
177
        if exitstatus == 0:
213
 
            if self.last_checker_failed:
214
 
                self.last_checker_failed = False
215
 
                self.using_timer(False)
216
 
            #self.logger('Checker for client %s (command "%s")'
217
 
            #            ' was successful'
218
 
            #            % (self.properties["Name"], command))
 
178
            self.logger('Checker for client {} (command "{}")'
 
179
                        ' succeeded'.format(self.properties["Name"],
 
180
                                            command), level=0)
219
181
            self.update()
220
182
            return
221
183
        # Checker failed
222
 
        if not self.last_checker_failed:
223
 
            self.last_checker_failed = True
224
 
            self.using_timer(True)
225
184
        if os.WIFEXITED(condition):
226
 
            self.logger('Checker for client %s (command "%s")'
227
 
                        ' failed with exit code %s'
228
 
                        % (self.properties["Name"], command,
229
 
                           os.WEXITSTATUS(condition)))
 
185
            self.logger('Checker for client {} (command "{}") failed'
 
186
                        ' with exit code {}'
 
187
                        .format(self.properties["Name"], command,
 
188
                                os.WEXITSTATUS(condition)))
230
189
        elif os.WIFSIGNALED(condition):
231
 
            self.logger('Checker for client %s (command "%s")'
232
 
                        ' was killed by signal %s'
233
 
                        % (self.properties["Name"], command,
234
 
                           os.WTERMSIG(condition)))
 
190
            self.logger('Checker for client {} (command "{}") was'
 
191
                        ' killed by signal {}'
 
192
                        .format(self.properties["Name"], command,
 
193
                                os.WTERMSIG(condition)))
235
194
        elif os.WCOREDUMP(condition):
236
 
            self.logger('Checker for client %s (command "%s")'
237
 
                        ' dumped core'
238
 
                        % (self.properties["Name"], command))
 
195
            self.logger('Checker for client {} (command "{}") dumped'
 
196
                        ' core'.format(self.properties["Name"],
 
197
                                       command))
239
198
        else:
240
 
            self.logger('Checker for client %s completed'
241
 
                        ' mysteriously')
 
199
            self.logger('Checker for client {} completed'
 
200
                        ' mysteriously'
 
201
                        .format(self.properties["Name"]))
242
202
        self.update()
243
203
    
244
204
    def checker_started(self, command):
245
 
        #self.logger('Client %s started checker "%s"'
246
 
        #            % (self.properties["Name"], unicode(command)))
247
 
        pass
 
205
        """Server signals that a checker started."""
 
206
        self.logger('Client {} started checker "{}"'
 
207
                    .format(self.properties["Name"],
 
208
                            command), level=0)
248
209
    
249
210
    def got_secret(self):
250
 
        self.last_checker_failed = False
251
 
        self.logger('Client %s received its secret'
252
 
                    % self.properties["Name"])
 
211
        self.logger('Client {} received its secret'
 
212
                    .format(self.properties["Name"]))
253
213
    
254
214
    def need_approval(self, timeout, default):
255
215
        if not default:
256
 
            message = 'Client %s needs approval within %s seconds'
 
216
            message = 'Client {} needs approval within {} seconds'
257
217
        else:
258
 
            message = 'Client %s will get its secret in %s seconds'
259
 
        self.logger(message
260
 
                    % (self.properties["Name"], timeout/1000))
261
 
        self.using_timer(True)
 
218
            message = 'Client {} will get its secret in {} seconds'
 
219
        self.logger(message.format(self.properties["Name"],
 
220
                                   timeout/1000))
262
221
    
263
222
    def rejected(self, reason):
264
 
        self.logger('Client %s was rejected; reason: %s'
265
 
                    % (self.properties["Name"], reason))
 
223
        self.logger('Client {} was rejected; reason: {}'
 
224
                    .format(self.properties["Name"], reason))
266
225
    
267
226
    def selectable(self):
268
227
        """Make this a "selectable" widget.
290
249
                          "bold-underline-blink":
291
250
                              "bold-underline-blink-standout",
292
251
                          }
293
 
 
 
252
        
294
253
        # Rebuild focus and non-focus widgets using current properties
295
 
 
 
254
        
296
255
        # Base part of a client. Name!
297
 
        base = ('%(name)s: '
298
 
                      % {"name": self.properties["Name"]})
 
256
        base = '{name}: '.format(name=self.properties["Name"])
299
257
        if not self.properties["Enabled"]:
300
258
            message = "DISABLED"
 
259
            self.using_timer(False)
301
260
        elif self.properties["ApprovalPending"]:
302
261
            timeout = datetime.timedelta(milliseconds
303
262
                                         = self.properties
305
264
            last_approval_request = isoformat_to_datetime(
306
265
                self.properties["LastApprovalRequest"])
307
266
            if last_approval_request is not None:
308
 
                timer = timeout - (datetime.datetime.utcnow()
309
 
                                   - last_approval_request)
 
267
                timer = max(timeout - (datetime.datetime.utcnow()
 
268
                                       - last_approval_request),
 
269
                            datetime.timedelta())
310
270
            else:
311
271
                timer = datetime.timedelta()
312
272
            if self.properties["ApprovedByDefault"]:
313
 
                message = "Approval in %s. (d)eny?"
 
273
                message = "Approval in {}. (d)eny?"
314
274
            else:
315
 
                message = "Denial in %s. (a)pprove?"
316
 
            message = message % unicode(timer).rsplit(".", 1)[0]
317
 
        elif self.last_checker_failed:
318
 
            # When checker has failed, print a timer until client expires
 
275
                message = "Denial in {}. (a)pprove?"
 
276
            message = message.format(str(timer).rsplit(".", 1)[0])
 
277
            self.using_timer(True)
 
278
        elif self.properties["LastCheckerStatus"] != 0:
 
279
            # When checker has failed, show timer until client expires
319
280
            expires = self.properties["Expires"]
320
281
            if expires == "":
321
282
                timer = datetime.timedelta(0)
322
283
            else:
323
 
                expires = datetime.datetime.strptime(expires,
324
 
                                                     '%Y-%m-%dT%H:%M:%S.%f')
325
 
                timer = expires - datetime.datetime.utcnow()
 
284
                expires = (datetime.datetime.strptime
 
285
                           (expires, '%Y-%m-%dT%H:%M:%S.%f'))
 
286
                timer = max(expires - datetime.datetime.utcnow(),
 
287
                            datetime.timedelta())
326
288
            message = ('A checker has failed! Time until client'
327
 
                       ' gets disabled: %s'
328
 
                           % unicode(timer).rsplit(".", 1)[0])
 
289
                       ' gets disabled: {}'
 
290
                       .format(str(timer).rsplit(".", 1)[0]))
 
291
            self.using_timer(True)
329
292
        else:
330
293
            message = "enabled"
331
 
        self._text = "%s%s" % (base, message)
332
 
            
 
294
            self.using_timer(False)
 
295
        self._text = "{}{}".format(base, message)
 
296
        
333
297
        if not urwid.supports_unicode():
334
298
            self._text = self._text.encode("ascii", "replace")
335
299
        textlist = [("normal", self._text)]
352
316
        self.update()
353
317
        return True             # Keep calling this
354
318
    
355
 
    def delete(self, *args, **kwargs):
 
319
    def delete(self, **kwargs):
356
320
        if self._update_timer_callback_tag is not None:
357
321
            gobject.source_remove(self._update_timer_callback_tag)
358
322
            self._update_timer_callback_tag = None
361
325
        self.match_objects = ()
362
326
        if self.delete_hook is not None:
363
327
            self.delete_hook(self)
364
 
        return super(MandosClientWidget, self).delete(*args, **kwargs)
 
328
        return super(MandosClientWidget, self).delete(**kwargs)
365
329
    
366
330
    def render(self, maxcolrow, focus=False):
367
331
        """Render differently if we have focus.
409
373
        else:
410
374
            return key
411
375
    
412
 
    def property_changed(self, property=None, value=None,
413
 
                         *args, **kwargs):
414
 
        """Call self.update() if old value is not new value.
 
376
    def properties_changed(self, interface, properties, invalidated):
 
377
        """Call self.update() if any properties changed.
415
378
        This overrides the method from MandosClientPropertyCache"""
416
 
        property_name = unicode(property)
417
 
        old_value = self.properties.get(property_name)
418
 
        super(MandosClientWidget, self).property_changed(
419
 
            property=property, value=value, *args, **kwargs)
420
 
        if self.properties.get(property_name) != old_value:
 
379
        old_values = { key: self.properties.get(key)
 
380
                       for key in properties.keys() }
 
381
        super(MandosClientWidget, self).properties_changed(
 
382
            interface, properties, invalidated)
 
383
        if any(old_values[key] != self.properties.get(key)
 
384
               for key in old_values):
421
385
            self.update()
422
386
 
423
387
 
426
390
    "down" key presses, thus not allowing any containing widgets to
427
391
    use them as an excuse to shift focus away from this widget.
428
392
    """
429
 
    def keypress(self, maxcolrow, key):
430
 
        ret = super(ConstrainedListBox, self).keypress(maxcolrow, key)
 
393
    def keypress(self, *args, **kwargs):
 
394
        ret = super(ConstrainedListBox, self).keypress(*args, **kwargs)
431
395
        if ret in ("up", "down"):
432
396
            return
433
397
        return ret
437
401
    """This is the entire user interface - the whole screen
438
402
    with boxes, lists of client widgets, etc.
439
403
    """
440
 
    def __init__(self, max_log_length=1000):
 
404
    def __init__(self, max_log_length=1000, log_level=1):
441
405
        DBusGMainLoop(set_as_default=True)
442
406
        
443
407
        self.screen = urwid.curses_display.Screen()
446
410
                ("normal",
447
411
                 "default", "default", None),
448
412
                ("bold",
449
 
                 "default", "default", "bold"),
 
413
                 "bold", "default", "bold"),
450
414
                ("underline-blink",
451
 
                 "default", "default", "underline"),
 
415
                 "underline,blink", "default", "underline,blink"),
452
416
                ("standout",
453
 
                 "default", "default", "standout"),
 
417
                 "standout", "default", "standout"),
454
418
                ("bold-underline-blink",
455
 
                 "default", "default", ("bold", "underline")),
 
419
                 "bold,underline,blink", "default", "bold,underline,blink"),
456
420
                ("bold-standout",
457
 
                 "default", "default", ("bold", "standout")),
 
421
                 "bold,standout", "default", "bold,standout"),
458
422
                ("underline-blink-standout",
459
 
                 "default", "default", ("underline", "standout")),
 
423
                 "underline,blink,standout", "default",
 
424
                 "underline,blink,standout"),
460
425
                ("bold-underline-blink-standout",
461
 
                 "default", "default", ("bold", "underline",
462
 
                                          "standout")),
 
426
                 "bold,underline,blink,standout", "default",
 
427
                 "bold,underline,blink,standout"),
463
428
                ))
464
429
        
465
430
        if urwid.supports_unicode():
480
445
        self.log = []
481
446
        self.max_log_length = max_log_length
482
447
        
 
448
        self.log_level = log_level
 
449
        
483
450
        # We keep a reference to the log widget so we can remove it
484
451
        # from the ListWalker without it getting destroyed
485
452
        self.logbox = ConstrainedListBox(self.log)
497
464
        
498
465
        self.busname = domain + '.Mandos'
499
466
        self.main_loop = gobject.MainLoop()
500
 
        self.bus = dbus.SystemBus()
501
 
        mandos_dbus_objc = self.bus.get_object(
502
 
            self.busname, "/", follow_name_owner_changes=True)
503
 
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
504
 
                                          dbus_interface
505
 
                                          = server_interface)
506
 
        try:
507
 
            mandos_clients = (self.mandos_serv
508
 
                              .GetAllClientsWithProperties())
509
 
        except dbus.exceptions.DBusException:
510
 
            mandos_clients = dbus.Dictionary()
511
 
        
512
 
        (self.mandos_serv
513
 
         .connect_to_signal("ClientRemoved",
514
 
                            self.find_and_remove_client,
515
 
                            dbus_interface=server_interface,
516
 
                            byte_arrays=True))
517
 
        (self.mandos_serv
518
 
         .connect_to_signal("ClientAdded",
519
 
                            self.add_new_client,
520
 
                            dbus_interface=server_interface,
521
 
                            byte_arrays=True))
522
 
        (self.mandos_serv
523
 
         .connect_to_signal("ClientNotFound",
524
 
                            self.client_not_found,
525
 
                            dbus_interface=server_interface,
526
 
                            byte_arrays=True))
527
 
        for path, client in mandos_clients.iteritems():
528
 
            client_proxy_object = self.bus.get_object(self.busname,
529
 
                                                      path)
530
 
            self.add_client(MandosClientWidget(server_proxy_object
531
 
                                               =self.mandos_serv,
532
 
                                               proxy_object
533
 
                                               =client_proxy_object,
534
 
                                               properties=client,
535
 
                                               update_hook
536
 
                                               =self.refresh,
537
 
                                               delete_hook
538
 
                                               =self.remove_client,
539
 
                                               logger
540
 
                                               =self.log_message),
541
 
                            path=path)
542
467
    
543
468
    def client_not_found(self, fingerprint, address):
544
 
        self.log_message(("Client with address %s and fingerprint %s"
545
 
                          " could not be found" % (address,
546
 
                                                    fingerprint)))
 
469
        self.log_message("Client with address {} and fingerprint {}"
 
470
                         " could not be found"
 
471
                         .format(address, fingerprint))
547
472
    
548
473
    def rebuild(self):
549
474
        """This rebuilds the User Interface.
559
484
                                                     self.divider)))
560
485
        if self.log_visible:
561
486
            self.uilist.append(self.logbox)
562
 
            pass
563
487
        self.topwidget = urwid.Pile(self.uilist)
564
488
    
565
 
    def log_message(self, message):
 
489
    def log_message(self, message, level=1):
 
490
        """Log message formatted with timestamp"""
 
491
        if level < self.log_level:
 
492
            return
566
493
        timestamp = datetime.datetime.now().isoformat()
567
 
        self.log_message_raw(timestamp + ": " + message)
 
494
        self.log_message_raw("{}: {}".format(timestamp, message),
 
495
                             level=level)
568
496
    
569
 
    def log_message_raw(self, markup):
 
497
    def log_message_raw(self, markup, level=1):
570
498
        """Add a log message to the log buffer."""
 
499
        if level < self.log_level:
 
500
            return
571
501
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
572
502
        if (self.max_log_length
573
503
            and len(self.log) > self.max_log_length):
580
510
        """Toggle visibility of the log buffer."""
581
511
        self.log_visible = not self.log_visible
582
512
        self.rebuild()
583
 
        #self.log_message("Log visibility changed to: "
584
 
        #                 + unicode(self.log_visible))
 
513
        self.log_message("Log visibility changed to: {}"
 
514
                         .format(self.log_visible), level=0)
585
515
    
586
516
    def change_log_display(self):
587
517
        """Change type of log display.
592
522
            self.log_wrap = "clip"
593
523
        for textwidget in self.log:
594
524
            textwidget.set_wrap_mode(self.log_wrap)
595
 
        #self.log_message("Wrap mode: " + self.log_wrap)
 
525
        self.log_message("Wrap mode: {}".format(self.log_wrap),
 
526
                         level=0)
596
527
    
597
528
    def find_and_remove_client(self, path, name):
598
529
        """Find a client by its object path and remove it.
603
534
            client = self.clients_dict[path]
604
535
        except KeyError:
605
536
            # not found?
606
 
            self.log_message("Unknown client %r (%r) removed", name,
607
 
                             path)
 
537
            self.log_message("Unknown client {!r} ({!r}) removed"
 
538
                             .format(name, path))
608
539
            return
609
540
        client.delete()
610
541
    
627
558
        if path is None:
628
559
            path = client.proxy.object_path
629
560
        self.clients_dict[path] = client
630
 
        self.clients.sort(None, lambda c: c.properties["Name"])
 
561
        self.clients.sort(key=lambda c: c.properties["Name"])
631
562
        self.refresh()
632
563
    
633
564
    def remove_client(self, client, path=None):
635
566
        if path is None:
636
567
            path = client.proxy.object_path
637
568
        del self.clients_dict[path]
638
 
        if not self.clients_dict:
639
 
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
640
 
            # is completely emptied, we need to recreate it.
641
 
            self.clients = urwid.SimpleListWalker([])
642
 
            self.rebuild()
643
569
        self.refresh()
644
570
    
645
571
    def refresh(self):
649
575
    
650
576
    def run(self):
651
577
        """Start the main loop and exit when it's done."""
 
578
        self.bus = dbus.SystemBus()
 
579
        mandos_dbus_objc = self.bus.get_object(
 
580
            self.busname, "/", follow_name_owner_changes=True)
 
581
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
 
582
                                          dbus_interface
 
583
                                          = server_interface)
 
584
        try:
 
585
            mandos_clients = (self.mandos_serv
 
586
                              .GetAllClientsWithProperties())
 
587
            if not mandos_clients:
 
588
                self.log_message_raw(("bold", "Note: Server has no clients."))
 
589
        except dbus.exceptions.DBusException:
 
590
            self.log_message_raw(("bold", "Note: No Mandos server running."))
 
591
            mandos_clients = dbus.Dictionary()
 
592
        
 
593
        (self.mandos_serv
 
594
         .connect_to_signal("ClientRemoved",
 
595
                            self.find_and_remove_client,
 
596
                            dbus_interface=server_interface,
 
597
                            byte_arrays=True))
 
598
        (self.mandos_serv
 
599
         .connect_to_signal("ClientAdded",
 
600
                            self.add_new_client,
 
601
                            dbus_interface=server_interface,
 
602
                            byte_arrays=True))
 
603
        (self.mandos_serv
 
604
         .connect_to_signal("ClientNotFound",
 
605
                            self.client_not_found,
 
606
                            dbus_interface=server_interface,
 
607
                            byte_arrays=True))
 
608
        for path, client in mandos_clients.items():
 
609
            client_proxy_object = self.bus.get_object(self.busname,
 
610
                                                      path)
 
611
            self.add_client(MandosClientWidget(server_proxy_object
 
612
                                               =self.mandos_serv,
 
613
                                               proxy_object
 
614
                                               =client_proxy_object,
 
615
                                               properties=client,
 
616
                                               update_hook
 
617
                                               =self.refresh,
 
618
                                               delete_hook
 
619
                                               =self.remove_client,
 
620
                                               logger
 
621
                                               =self.log_message),
 
622
                            path=path)
 
623
        
652
624
        self.refresh()
653
625
        self._input_callback_tag = (gobject.io_add_watch
654
626
                                    (sys.stdin.fileno(),
686
658
            elif key == "window resize":
687
659
                self.size = self.screen.get_cols_rows()
688
660
                self.refresh()
689
 
            elif key == "\f":  # Ctrl-L
 
661
            elif key == "ctrl l":
 
662
                self.screen.clear()
690
663
                self.refresh()
691
664
            elif key == "l" or key == "D":
692
665
                self.toggle_log_display()
704
677
                                            "?: Help",
705
678
                                            "l: Log window toggle",
706
679
                                            "TAB: Switch window",
707
 
                                            "w: Wrap (log)"))))
 
680
                                            "w: Wrap (log lines)",
 
681
                                            "v: Toggle verbose log",
 
682
                                            ))))
708
683
                self.log_message_raw(("bold",
709
684
                                      "  "
710
685
                                      .join(("Clients:",
723
698
                else:
724
699
                    self.topwidget.set_focus(self.logbox)
725
700
                self.refresh()
 
701
            elif key == "v":
 
702
                if self.log_level == 0:
 
703
                    self.log_level = 1
 
704
                    self.log_message("Verbose mode: Off")
 
705
                else:
 
706
                    self.log_level = 0
 
707
                    self.log_message("Verbose mode: On")
726
708
            #elif (key == "end" or key == "meta >" or key == "G"
727
709
            #      or key == ">"):
728
710
            #    pass            # xxx end-of-buffer
751
733
    ui.run()
752
734
except KeyboardInterrupt:
753
735
    ui.screen.stop()
754
 
except Exception, e:
755
 
    ui.log_message(unicode(e))
 
736
except Exception as e:
 
737
    ui.log_message(str(e))
756
738
    ui.screen.stop()
757
739
    raise