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* README: Update copyright year; add "2009".
* debian/copyright: - '' -
* mandos: - '' -
* mandos-clients.conf.xml: - '' -
* mandos-keygen: - '' -
* mandos-keygen.xml: - '' -
* mandos.conf.xml: - '' -
* mandos.xml: - '' -
* plugin-runner.c: - '' -
* plugin-runner.xml: - '' -
* plugins.d/askpass-fifo.c: - '' -
* plugins.d/askpass-fifo.xml: - '' -
* plugins.d/mandos-client.c: - '' -
* plugins.d/mandos-client.xml: - '' -
* plugins.d/password-prompt.c: - '' -
* plugins.d/password-prompt.xml: - '' -
* plugins.d/splashy.c: - '' -
* plugins.d/splashy.xml: - '' -
* plugins.d/usplash.c: - '' -
* plugins.d/usplash.xml: - '' -

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mandos-monitor
1
 
#!/usr/bin/python
2
 
# -*- mode: python; coding: utf-8 -*-
3
 
 
4
 
from __future__ import division, absolute_import, with_statement
5
 
 
6
 
import sys
7
 
import os
8
 
import signal
9
 
 
10
 
import datetime
11
 
 
12
 
import urwid.curses_display
13
 
import urwid
14
 
 
15
 
from dbus.mainloop.glib import DBusGMainLoop
16
 
import gobject
17
 
 
18
 
import dbus
19
 
 
20
 
import UserList
21
 
 
22
 
import locale
23
 
 
24
 
locale.setlocale(locale.LC_ALL, u'')
25
 
 
26
 
import logging
27
 
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
28
 
 
29
 
# Some useful constants
30
 
domain = 'se.bsnet.fukt'
31
 
server_interface = domain + '.Mandos'
32
 
client_interface = domain + '.Mandos.Client'
33
 
version = "1.0.15"
34
 
 
35
 
# Always run in monochrome mode
36
 
urwid.curses_display.curses.has_colors = lambda : False
37
 
 
38
 
# Urwid doesn't support blinking, but we want it.  Since we have no
39
 
# use for underline on its own, we make underline also always blink.
40
 
urwid.curses_display.curses.A_UNDERLINE |= (
41
 
    urwid.curses_display.curses.A_BLINK)
42
 
 
43
 
class MandosClientPropertyCache(object):
44
 
    """This wraps a Mandos Client D-Bus proxy object, caches the
45
 
    properties and calls a hook function when any of them are
46
 
    changed.
47
 
    """
48
 
    def __init__(self, proxy_object=None, *args, **kwargs):
49
 
        self.proxy = proxy_object # Mandos Client proxy object
50
 
        
51
 
        self.properties = dict()
52
 
        self.proxy.connect_to_signal(u"PropertyChanged",
53
 
                                     self.property_changed,
54
 
                                     client_interface,
55
 
                                     byte_arrays=True)
56
 
        
57
 
        self.properties.update(
58
 
            self.proxy.GetAll(client_interface,
59
 
                              dbus_interface = dbus.PROPERTIES_IFACE))
60
 
        super(MandosClientPropertyCache, self).__init__(
61
 
            *args, **kwargs)
62
 
    
63
 
    def property_changed(self, property=None, value=None):
64
 
        """This is called whenever we get a PropertyChanged signal
65
 
        It updates the changed property in the "properties" dict.
66
 
        """
67
 
        # Update properties dict with new value
68
 
        self.properties[property] = value
69
 
 
70
 
 
71
 
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
72
 
    """A Mandos Client which is visible on the screen.
73
 
    """
74
 
    
75
 
    def __init__(self, server_proxy_object=None, update_hook=None,
76
 
                 delete_hook=None, logger=None, *args, **kwargs):
77
 
        # Called on update
78
 
        self.update_hook = update_hook
79
 
        # Called on delete
80
 
        self.delete_hook = delete_hook
81
 
        # Mandos Server proxy object
82
 
        self.server_proxy_object = server_proxy_object
83
 
        # Logger
84
 
        self.logger = logger
85
 
        
86
 
        # The widget shown normally
87
 
        self._text_widget = urwid.Text(u"")
88
 
        # The widget shown when we have focus
89
 
        self._focus_text_widget = urwid.Text(u"")
90
 
        super(MandosClientWidget, self).__init__(
91
 
            update_hook=update_hook, delete_hook=delete_hook,
92
 
            *args, **kwargs)
93
 
        self.update()
94
 
        self.opened = False
95
 
        self.proxy.connect_to_signal(u"CheckerCompleted",
96
 
                                     self.checker_completed,
97
 
                                     client_interface,
98
 
                                     byte_arrays=True)
99
 
        self.proxy.connect_to_signal(u"CheckerStarted",
100
 
                                     self.checker_started,
101
 
                                     client_interface,
102
 
                                     byte_arrays=True)
103
 
        self.proxy.connect_to_signal(u"GotSecret",
104
 
                                     self.got_secret,
105
 
                                     client_interface,
106
 
                                     byte_arrays=True)
107
 
        self.proxy.connect_to_signal(u"NeedApproval",
108
 
                                     self.need_approval,
109
 
                                     client_interface,
110
 
                                     byte_arrays=True)
111
 
        self.proxy.connect_to_signal(u"Rejected",
112
 
                                     self.rejected,
113
 
                                     client_interface,
114
 
                                     byte_arrays=True)
115
 
    
116
 
    def checker_completed(self, exitstatus, condition, command):
117
 
        if exitstatus == 0:
118
 
            #self.logger(u'Checker for client %s (command "%s")'
119
 
            #            u' was successful'
120
 
            #            % (self.properties[u"name"], command))
121
 
            return
122
 
        if os.WIFEXITED(condition):
123
 
            self.logger(u'Checker for client %s (command "%s")'
124
 
                        u' failed with exit code %s'
125
 
                        % (self.properties[u"name"], command,
126
 
                           os.WEXITSTATUS(condition)))
127
 
            return
128
 
        if os.WIFSIGNALED(condition):
129
 
            self.logger(u'Checker for client %s (command "%s")'
130
 
                        u' was killed by signal %s'
131
 
                        % (self.properties[u"name"], command,
132
 
                           os.WTERMSIG(condition)))
133
 
            return
134
 
        if os.WCOREDUMP(condition):
135
 
            self.logger(u'Checker for client %s (command "%s")'
136
 
                        u' dumped core'
137
 
                        % (self.properties[u"name"], command))
138
 
        self.logger(u'Checker for client %s completed mysteriously')
139
 
    
140
 
    def checker_started(self, command):
141
 
        #self.logger(u'Client %s started checker "%s"'
142
 
        #            % (self.properties[u"name"], unicode(command)))
143
 
        pass
144
 
    
145
 
    def got_secret(self):
146
 
        self.logger(u'Client %s received its secret'
147
 
                    % self.properties[u"name"])
148
 
    
149
 
    def need_approval(self, timeout, default):
150
 
        if not default:
151
 
            message = u'Client %s needs approval within %s seconds'
152
 
        else:
153
 
            message = u'Client %s will get its secret in %s seconds'
154
 
        self.logger(message
155
 
                    % (self.properties[u"name"], timeout/1000))
156
 
    
157
 
    def rejected(self, reason):
158
 
        self.logger(u'Client %s was rejected; reason: %s'
159
 
                    % (self.properties[u"name"], reason))
160
 
    
161
 
    def selectable(self):
162
 
        """Make this a "selectable" widget.
163
 
        This overrides the method from urwid.FlowWidget."""
164
 
        return True
165
 
    
166
 
    def rows(self, (maxcol,), focus=False):
167
 
        """How many rows this widget will occupy might depend on
168
 
        whether we have focus or not.
169
 
        This overrides the method from urwid.FlowWidget"""
170
 
        return self.current_widget(focus).rows((maxcol,), focus=focus)
171
 
    
172
 
    def current_widget(self, focus=False):
173
 
        if focus or self.opened:
174
 
            return self._focus_widget
175
 
        return self._widget
176
 
    
177
 
    def update(self):
178
 
        "Called when what is visible on the screen should be updated."
179
 
        # How to add standout mode to a style
180
 
        with_standout = { u"normal": u"standout",
181
 
                          u"bold": u"bold-standout",
182
 
                          u"underline-blink":
183
 
                              u"underline-blink-standout",
184
 
                          u"bold-underline-blink":
185
 
                              u"bold-underline-blink-standout",
186
 
                          }
187
 
        
188
 
        # Rebuild focus and non-focus widgets using current properties
189
 
        self._text = (u'%(name)s: %(enabled)s'
190
 
                      % { u"name": self.properties[u"name"],
191
 
                          u"enabled":
192
 
                              (u"enabled"
193
 
                               if self.properties[u"enabled"]
194
 
                               else u"DISABLED")})
195
 
        if not urwid.supports_unicode():
196
 
            self._text = self._text.encode("ascii", "replace")
197
 
        textlist = [(u"normal", self._text)]
198
 
        self._text_widget.set_text(textlist)
199
 
        self._focus_text_widget.set_text([(with_standout[text[0]],
200
 
                                           text[1])
201
 
                                          if isinstance(text, tuple)
202
 
                                          else text
203
 
                                          for text in textlist])
204
 
        self._widget = self._text_widget
205
 
        self._focus_widget = urwid.AttrWrap(self._focus_text_widget,
206
 
                                            "standout")
207
 
        # Run update hook, if any
208
 
        if self.update_hook is not None:
209
 
            self.update_hook()
210
 
    
211
 
    def delete(self):
212
 
        if self.delete_hook is not None:
213
 
            self.delete_hook(self)
214
 
    
215
 
    def render(self, (maxcol,), focus=False):
216
 
        """Render differently if we have focus.
217
 
        This overrides the method from urwid.FlowWidget"""
218
 
        return self.current_widget(focus).render((maxcol,),
219
 
                                                 focus=focus)
220
 
    
221
 
    def keypress(self, (maxcol,), key):
222
 
        """Handle keys.
223
 
        This overrides the method from urwid.FlowWidget"""
224
 
        if key == u"e" or key == u"+":
225
 
            self.proxy.Enable()
226
 
        elif key == u"d" or key == u"-":
227
 
            self.proxy.Disable()
228
 
        elif key == u"r" or key == u"_" or key == u"ctrl k":
229
 
            self.server_proxy_object.RemoveClient(self.proxy
230
 
                                                  .object_path)
231
 
        elif key == u"s":
232
 
            self.proxy.StartChecker()
233
 
        elif key == u"S":
234
 
            self.proxy.StopChecker()
235
 
        elif key == u"C":
236
 
            self.proxy.CheckedOK()
237
 
        # xxx
238
 
#         elif key == u"p" or key == "=":
239
 
#             self.proxy.pause()
240
 
#         elif key == u"u" or key == ":":
241
 
#             self.proxy.unpause()
242
 
#         elif key == u"RET":
243
 
#             self.open()
244
 
        elif key == u"+":
245
 
            self.proxy.Approve(True)
246
 
        elif key == u"-":
247
 
            self.proxy.Approve(False)
248
 
        else:
249
 
            return key
250
 
    
251
 
    def property_changed(self, property=None, value=None,
252
 
                         *args, **kwargs):
253
 
        """Call self.update() if old value is not new value.
254
 
        This overrides the method from MandosClientPropertyCache"""
255
 
        property_name = unicode(property)
256
 
        old_value = self.properties.get(property_name)
257
 
        super(MandosClientWidget, self).property_changed(
258
 
            property=property, value=value, *args, **kwargs)
259
 
        if self.properties.get(property_name) != old_value:
260
 
            self.update()
261
 
 
262
 
 
263
 
class ConstrainedListBox(urwid.ListBox):
264
 
    """Like a normal urwid.ListBox, but will consume all "up" or
265
 
    "down" key presses, thus not allowing any containing widgets to
266
 
    use them as an excuse to shift focus away from this widget.
267
 
    """
268
 
    def keypress(self, (maxcol, maxrow), key):
269
 
        ret = super(ConstrainedListBox, self).keypress((maxcol, maxrow), key)
270
 
        if ret in (u"up", u"down"):
271
 
            return
272
 
        return ret
273
 
 
274
 
 
275
 
class UserInterface(object):
276
 
    """This is the entire user interface - the whole screen
277
 
    with boxes, lists of client widgets, etc.
278
 
    """
279
 
    def __init__(self, max_log_length=1000):
280
 
        DBusGMainLoop(set_as_default=True)
281
 
        
282
 
        self.screen = urwid.curses_display.Screen()
283
 
        
284
 
        self.screen.register_palette((
285
 
                (u"normal",
286
 
                 u"default", u"default", None),
287
 
                (u"bold",
288
 
                 u"default", u"default", u"bold"),
289
 
                (u"underline-blink",
290
 
                 u"default", u"default", u"underline"),
291
 
                (u"standout",
292
 
                 u"default", u"default", u"standout"),
293
 
                (u"bold-underline-blink",
294
 
                 u"default", u"default", (u"bold", u"underline")),
295
 
                (u"bold-standout",
296
 
                 u"default", u"default", (u"bold", u"standout")),
297
 
                (u"underline-blink-standout",
298
 
                 u"default", u"default", (u"underline", u"standout")),
299
 
                (u"bold-underline-blink-standout",
300
 
                 u"default", u"default", (u"bold", u"underline",
301
 
                                          u"standout")),
302
 
                ))
303
 
        
304
 
        if urwid.supports_unicode():
305
 
            self.divider = u"─" # \u2500
306
 
            #self.divider = u"━" # \u2501
307
 
        else:
308
 
            #self.divider = u"-" # \u002d
309
 
            self.divider = u"_" # \u005f
310
 
        
311
 
        self.screen.start()
312
 
        
313
 
        self.size = self.screen.get_cols_rows()
314
 
        
315
 
        self.clients = urwid.SimpleListWalker([])
316
 
        self.clients_dict = {}
317
 
        
318
 
        # We will add Text widgets to this list
319
 
        self.log = []
320
 
        self.max_log_length = max_log_length
321
 
        
322
 
        # We keep a reference to the log widget so we can remove it
323
 
        # from the ListWalker without it getting destroyed
324
 
        self.logbox = ConstrainedListBox(self.log)
325
 
        
326
 
        # This keeps track of whether self.uilist currently has
327
 
        # self.logbox in it or not
328
 
        self.log_visible = True
329
 
        self.log_wrap = u"any"
330
 
        
331
 
        self.rebuild()
332
 
        self.log_message_raw((u"bold",
333
 
                              u"Mandos Monitor version " + version))
334
 
        self.log_message_raw((u"bold",
335
 
                              u"q: Quit  ?: Help"))
336
 
        
337
 
        self.busname = domain + '.Mandos'
338
 
        self.main_loop = gobject.MainLoop()
339
 
        self.bus = dbus.SystemBus()
340
 
        mandos_dbus_objc = self.bus.get_object(
341
 
            self.busname, u"/", follow_name_owner_changes=True)
342
 
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
343
 
                                          dbus_interface
344
 
                                          = server_interface)
345
 
        try:
346
 
            mandos_clients = (self.mandos_serv
347
 
                              .GetAllClientsWithProperties())
348
 
        except dbus.exceptions.DBusException:
349
 
            mandos_clients = dbus.Dictionary()
350
 
        
351
 
        (self.mandos_serv
352
 
         .connect_to_signal(u"ClientRemoved",
353
 
                            self.find_and_remove_client,
354
 
                            dbus_interface=server_interface,
355
 
                            byte_arrays=True))
356
 
        (self.mandos_serv
357
 
         .connect_to_signal(u"ClientAdded",
358
 
                            self.add_new_client,
359
 
                            dbus_interface=server_interface,
360
 
                            byte_arrays=True))
361
 
        (self.mandos_serv
362
 
         .connect_to_signal(u"ClientNotFound",
363
 
                            self.client_not_found,
364
 
                            dbus_interface=server_interface,
365
 
                            byte_arrays=True))
366
 
        for path, client in mandos_clients.iteritems():
367
 
            client_proxy_object = self.bus.get_object(self.busname,
368
 
                                                      path)
369
 
            self.add_client(MandosClientWidget(server_proxy_object
370
 
                                               =self.mandos_serv,
371
 
                                               proxy_object
372
 
                                               =client_proxy_object,
373
 
                                               properties=client,
374
 
                                               update_hook
375
 
                                               =self.refresh,
376
 
                                               delete_hook
377
 
                                               =self.remove_client,
378
 
                                               logger
379
 
                                               =self.log_message),
380
 
                            path=path)
381
 
    
382
 
    def client_not_found(self, fingerprint, address):
383
 
        self.log_message((u"Client with address %s and fingerprint %s"
384
 
                          u" could not be found" % (address,
385
 
                                                    fingerprint)))
386
 
    
387
 
    def rebuild(self):
388
 
        """This rebuilds the User Interface.
389
 
        Call this when the widget layout needs to change"""
390
 
        self.uilist = []
391
 
        #self.uilist.append(urwid.ListBox(self.clients))
392
 
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.clients),
393
 
                                       #header=urwid.Divider(),
394
 
                                       header=None,
395
 
                                       footer=urwid.Divider(div_char=self.divider)))
396
 
        if self.log_visible:
397
 
            self.uilist.append(self.logbox)
398
 
            pass
399
 
        self.topwidget = urwid.Pile(self.uilist)
400
 
    
401
 
    def log_message(self, message):
402
 
        timestamp = datetime.datetime.now().isoformat()
403
 
        self.log_message_raw(timestamp + u": " + message)
404
 
    
405
 
    def log_message_raw(self, markup):
406
 
        """Add a log message to the log buffer."""
407
 
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
408
 
        if (self.max_log_length
409
 
            and len(self.log) > self.max_log_length):
410
 
            del self.log[0:len(self.log)-self.max_log_length-1]
411
 
        self.logbox.set_focus(len(self.logbox.body.contents),
412
 
                              coming_from=u"above")
413
 
        self.refresh()
414
 
    
415
 
    def toggle_log_display(self):
416
 
        """Toggle visibility of the log buffer."""
417
 
        self.log_visible = not self.log_visible
418
 
        self.rebuild()
419
 
        self.log_message(u"Log visibility changed to: "
420
 
                         + unicode(self.log_visible))
421
 
    
422
 
    def change_log_display(self):
423
 
        """Change type of log display.
424
 
        Currently, this toggles wrapping of text lines."""
425
 
        if self.log_wrap == u"clip":
426
 
            self.log_wrap = u"any"
427
 
        else:
428
 
            self.log_wrap = u"clip"
429
 
        for textwidget in self.log:
430
 
            textwidget.set_wrap_mode(self.log_wrap)
431
 
        self.log_message(u"Wrap mode: " + self.log_wrap)
432
 
    
433
 
    def find_and_remove_client(self, path, name):
434
 
        """Find an client from its object path and remove it.
435
 
        
436
 
        This is connected to the ClientRemoved signal from the
437
 
        Mandos server object."""
438
 
        try:
439
 
            client = self.clients_dict[path]
440
 
        except KeyError:
441
 
            # not found?
442
 
            return
443
 
        self.remove_client(client, path)
444
 
    
445
 
    def add_new_client(self, path):
446
 
        client_proxy_object = self.bus.get_object(self.busname, path)
447
 
        self.add_client(MandosClientWidget(server_proxy_object
448
 
                                           =self.mandos_serv,
449
 
                                           proxy_object
450
 
                                           =client_proxy_object,
451
 
                                           update_hook
452
 
                                           =self.refresh,
453
 
                                           delete_hook
454
 
                                           =self.remove_client,
455
 
                                           logger
456
 
                                           =self.log_message),
457
 
                        path=path)
458
 
    
459
 
    def add_client(self, client, path=None):
460
 
        self.clients.append(client)
461
 
        if path is None:
462
 
            path = client.proxy.object_path
463
 
        self.clients_dict[path] = client
464
 
        self.clients.sort(None, lambda c: c.properties[u"name"])
465
 
        self.refresh()
466
 
    
467
 
    def remove_client(self, client, path=None):
468
 
        self.clients.remove(client)
469
 
        if path is None:
470
 
            path = client.proxy.object_path
471
 
        del self.clients_dict[path]
472
 
        if not self.clients_dict:
473
 
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
474
 
            # is completely emptied, we need to recreate it.
475
 
            self.clients = urwid.SimpleListWalker([])
476
 
            self.rebuild()
477
 
        self.refresh()
478
 
    
479
 
    def refresh(self):
480
 
        """Redraw the screen"""
481
 
        canvas = self.topwidget.render(self.size, focus=True)
482
 
        self.screen.draw_screen(self.size, canvas)
483
 
    
484
 
    def run(self):
485
 
        """Start the main loop and exit when it's done."""
486
 
        self.refresh()
487
 
        self._input_callback_tag = (gobject.io_add_watch
488
 
                                    (sys.stdin.fileno(),
489
 
                                     gobject.IO_IN,
490
 
                                     self.process_input))
491
 
        self.main_loop.run()
492
 
        # Main loop has finished, we should close everything now
493
 
        gobject.source_remove(self._input_callback_tag)
494
 
        self.screen.stop()
495
 
    
496
 
    def stop(self):
497
 
        self.main_loop.quit()
498
 
    
499
 
    def process_input(self, source, condition):
500
 
        keys = self.screen.get_input()
501
 
        translations = { u"ctrl n": u"down",      # Emacs
502
 
                         u"ctrl p": u"up",        # Emacs
503
 
                         u"ctrl v": u"page down", # Emacs
504
 
                         u"meta v": u"page up",   # Emacs
505
 
                         u" ": u"page down",      # less
506
 
                         u"f": u"page down",      # less
507
 
                         u"b": u"page up",        # less
508
 
                         u"j": u"down",           # vi
509
 
                         u"k": u"up",             # vi
510
 
                         }
511
 
        for key in keys:
512
 
            try:
513
 
                key = translations[key]
514
 
            except KeyError:    # :-)
515
 
                pass
516
 
            
517
 
            if key == u"q" or key == u"Q":
518
 
                self.stop()
519
 
                break
520
 
            elif key == u"window resize":
521
 
                self.size = self.screen.get_cols_rows()
522
 
                self.refresh()
523
 
            elif key == u"\f":  # Ctrl-L
524
 
                self.refresh()
525
 
            elif key == u"l" or key == u"D":
526
 
                self.toggle_log_display()
527
 
                self.refresh()
528
 
            elif key == u"w" or key == u"i":
529
 
                self.change_log_display()
530
 
                self.refresh()
531
 
            elif key == u"?" or key == u"f1" or key == u"esc":
532
 
                if not self.log_visible:
533
 
                    self.log_visible = True
534
 
                    self.rebuild()
535
 
                self.log_message_raw((u"bold",
536
 
                                      u"  ".
537
 
                                      join((u"q: Quit",
538
 
                                            u"?: Help",
539
 
                                            u"l: Log window toggle",
540
 
                                            u"TAB: Switch window",
541
 
                                            u"w: Wrap (log)"))))
542
 
                self.log_message_raw((u"bold",
543
 
                                      u"  "
544
 
                                      .join((u"Clients:",
545
 
                                             u"e: Enable",
546
 
                                             u"d: Disable",
547
 
                                             u"r: Remove",
548
 
                                             u"s: Start new checker",
549
 
                                             u"S: Stop checker",
550
 
                                             u"C: Checker OK"))))
551
 
                self.refresh()
552
 
            elif key == u"tab":
553
 
                if self.topwidget.get_focus() is self.logbox:
554
 
                    self.topwidget.set_focus(0)
555
 
                else:
556
 
                    self.topwidget.set_focus(self.logbox)
557
 
                self.refresh()
558
 
            #elif (key == u"end" or key == u"meta >" or key == u"G"
559
 
            #      or key == u">"):
560
 
            #    pass            # xxx end-of-buffer
561
 
            #elif (key == u"home" or key == u"meta <" or key == u"g"
562
 
            #      or key == u"<"):
563
 
            #    pass            # xxx beginning-of-buffer
564
 
            #elif key == u"ctrl e" or key == u"$":
565
 
            #    pass            # xxx move-end-of-line
566
 
            #elif key == u"ctrl a" or key == u"^":
567
 
            #    pass            # xxx move-beginning-of-line
568
 
            #elif key == u"ctrl b" or key == u"meta (" or key == u"h":
569
 
            #    pass            # xxx left
570
 
            #elif key == u"ctrl f" or key == u"meta )" or key == u"l":
571
 
            #    pass            # xxx right
572
 
            #elif key == u"a":
573
 
            #    pass            # scroll up log
574
 
            #elif key == u"z":
575
 
            #    pass            # scroll down log
576
 
            elif self.topwidget.selectable():
577
 
                self.topwidget.keypress(self.size, key)
578
 
                self.refresh()
579
 
        return True
580
 
 
581
 
ui = UserInterface()
582
 
try:
583
 
    ui.run()
584
 
except Exception, e:
585
 
    ui.log_message(unicode(e))
586
 
    ui.screen.stop()
587
 
    raise