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mandos-monitor
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# 
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# Mandos Monitor - Control and monitor the Mandos server
5
5
# 
6
 
# Copyright © 2009-2015 Teddy Hogeborn
7
 
# Copyright © 2009-2015 Björn Påhlsson
 
6
# Copyright © 2009-2011 Teddy Hogeborn
 
7
# Copyright © 2009-2011 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
21
 
# <http://www.gnu.org/licenses/>.
 
20
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
22
21
# 
23
22
# Contact the authors at <mandos@recompile.se>.
24
23
# 
25
24
 
26
25
from __future__ import (division, absolute_import, print_function,
27
26
                        unicode_literals)
28
 
try:
29
 
    from future_builtins import *
30
 
except ImportError:
31
 
    pass
32
27
 
33
28
import sys
34
29
import os
 
30
import signal
35
31
 
36
32
import datetime
37
33
 
39
35
import urwid
40
36
 
41
37
from dbus.mainloop.glib import DBusGMainLoop
42
 
try:
43
 
    import gobject
44
 
except ImportError:
45
 
    from gi.repository import GObject as gobject
 
38
import gobject
46
39
 
47
40
import dbus
48
41
 
 
42
import UserList
 
43
 
49
44
import locale
50
45
 
51
 
if sys.version_info.major == 2:
52
 
    str = unicode
53
 
 
54
46
locale.setlocale(locale.LC_ALL, '')
55
47
 
56
48
import logging
60
52
domain = 'se.recompile'
61
53
server_interface = domain + '.Mandos'
62
54
client_interface = domain + '.Mandos.Client'
63
 
version = "1.6.9"
 
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)
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, properties=None, **kwargs):
 
86
    def __init__(self, proxy_object=None, *args, **kwargs):
87
87
        self.proxy = proxy_object # Mandos Client proxy object
88
 
        self.properties = dict() if properties is None else properties
 
88
        
 
89
        self.properties = dict()
89
90
        self.property_changed_match = (
90
 
            self.proxy.connect_to_signal("PropertiesChanged",
91
 
                                         self.properties_changed,
92
 
                                         dbus.PROPERTIES_IFACE,
 
91
            self.proxy.connect_to_signal("PropertyChanged",
 
92
                                         self.property_changed,
 
93
                                         client_interface,
93
94
                                         byte_arrays=True))
94
95
        
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)
 
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)
102
103
    
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.
 
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.
106
107
        """
107
108
        # Update properties dict with new value
108
 
        self.properties.update(properties)
 
109
        self.properties[property] = value
109
110
    
110
 
    def delete(self):
 
111
    def delete(self, *args, **kwargs):
111
112
        self.property_changed_match.remove()
 
113
        super(MandosClientPropertyCache, self).__init__(
 
114
            *args, **kwargs)
112
115
 
113
116
 
114
117
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
116
119
    """
117
120
    
118
121
    def __init__(self, server_proxy_object=None, update_hook=None,
119
 
                 delete_hook=None, logger=None, **kwargs):
 
122
                 delete_hook=None, logger=None, *args, **kwargs):
120
123
        # Called on update
121
124
        self.update_hook = update_hook
122
125
        # Called on delete
127
130
        self.logger = logger
128
131
        
129
132
        self._update_timer_callback_tag = None
 
133
        self._update_timer_callback_lock = 0
 
134
        self.last_checker_failed = False
130
135
        
131
136
        # The widget shown normally
132
137
        self._text_widget = urwid.Text("")
133
138
        # The widget shown when we have focus
134
139
        self._focus_text_widget = urwid.Text("")
135
 
        super(MandosClientWidget, self).__init__(**kwargs)
 
140
        super(MandosClientWidget, self).__init__(
 
141
            update_hook=update_hook, delete_hook=delete_hook,
 
142
            *args, **kwargs)
136
143
        self.update()
137
144
        self.opened = False
138
145
        
 
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
        
139
164
        self.match_objects = (
140
165
            self.proxy.connect_to_signal("CheckerCompleted",
141
166
                                         self.checker_completed,
157
182
                                         self.rejected,
158
183
                                         client_interface,
159
184
                                         byte_arrays=True))
160
 
        self.logger('Created client {}'
161
 
                    .format(self.properties["Name"]), level=0)
 
185
        #self.logger('Created client %s' % (self.properties["Name"]))
162
186
    
 
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
        
163
193
    def using_timer(self, flag):
164
194
        """Call this method with True or False when timer should be
165
195
        activated or deactivated.
166
196
        """
167
 
        if flag and self._update_timer_callback_tag is None:
 
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:
168
203
            # Will update the shown timer value every second
169
204
            self._update_timer_callback_tag = (gobject.timeout_add
170
205
                                               (1000,
171
206
                                                self.update_timer))
172
 
        elif not (flag or self._update_timer_callback_tag is None):
 
207
        elif old and self._update_timer_callback_lock == 0:
173
208
            gobject.source_remove(self._update_timer_callback_tag)
174
209
            self._update_timer_callback_tag = None
175
210
    
176
 
    def checker_completed(self, exitstatus, signal, command):
 
211
    def checker_completed(self, exitstatus, condition, command):
177
212
        if exitstatus == 0:
178
 
            self.logger('Checker for client {} (command "{}")'
179
 
                        ' succeeded'.format(self.properties["Name"],
180
 
                                            command), level=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))
181
219
            self.update()
182
220
            return
183
221
        # Checker failed
184
 
        if exitstatus >= 0:
185
 
            self.logger('Checker for client {} (command "{}") failed'
186
 
                        ' with exit code {}'
187
 
                        .format(self.properties["Name"], command,
188
 
                                exitstatus))
189
 
        elif signal != 0:
190
 
            self.logger('Checker for client {} (command "{}") was'
191
 
                        ' killed by signal {}'
192
 
                        .format(self.properties["Name"], command,
193
 
                                signal))
 
222
        if not self.last_checker_failed:
 
223
            self.last_checker_failed = True
 
224
            self.using_timer(True)
 
225
        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)))
 
230
        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)))
 
235
        elif os.WCOREDUMP(condition):
 
236
            self.logger('Checker for client %s (command "%s")'
 
237
                        ' dumped core'
 
238
                        % (self.properties["Name"], command))
194
239
        else:
195
 
            self.logger('Checker for client {} completed'
196
 
                        ' mysteriously'
197
 
                        .format(self.properties["Name"]))
 
240
            self.logger('Checker for client %s completed'
 
241
                        ' mysteriously')
198
242
        self.update()
199
243
    
200
244
    def checker_started(self, command):
201
 
        """Server signals that a checker started."""
202
 
        self.logger('Client {} started checker "{}"'
203
 
                    .format(self.properties["Name"],
204
 
                            command), level=0)
 
245
        """Server signals that a checker started. This could be useful
 
246
           to log in the future. """
 
247
        #self.logger('Client %s started checker "%s"'
 
248
        #            % (self.properties["Name"], unicode(command)))
 
249
        pass
205
250
    
206
251
    def got_secret(self):
207
 
        self.logger('Client {} received its secret'
208
 
                    .format(self.properties["Name"]))
 
252
        self.last_checker_failed = False
 
253
        self.logger('Client %s received its secret'
 
254
                    % self.properties["Name"])
209
255
    
210
256
    def need_approval(self, timeout, default):
211
257
        if not default:
212
 
            message = 'Client {} needs approval within {} seconds'
 
258
            message = 'Client %s needs approval within %s seconds'
213
259
        else:
214
 
            message = 'Client {} will get its secret in {} seconds'
215
 
        self.logger(message.format(self.properties["Name"],
216
 
                                   timeout/1000))
 
260
            message = 'Client %s will get its secret in %s seconds'
 
261
        self.logger(message
 
262
                    % (self.properties["Name"], timeout/1000))
 
263
        self.using_timer(True)
217
264
    
218
265
    def rejected(self, reason):
219
 
        self.logger('Client {} was rejected; reason: {}'
220
 
                    .format(self.properties["Name"], reason))
 
266
        self.logger('Client %s was rejected; reason: %s'
 
267
                    % (self.properties["Name"], reason))
221
268
    
222
269
    def selectable(self):
223
270
        """Make this a "selectable" widget.
245
292
                          "bold-underline-blink":
246
293
                              "bold-underline-blink-standout",
247
294
                          }
248
 
        
 
295
 
249
296
        # Rebuild focus and non-focus widgets using current properties
250
 
        
 
297
 
251
298
        # Base part of a client. Name!
252
 
        base = '{name}: '.format(name=self.properties["Name"])
 
299
        base = ('%(name)s: '
 
300
                      % {"name": self.properties["Name"]})
253
301
        if not self.properties["Enabled"]:
254
302
            message = "DISABLED"
255
 
            self.using_timer(False)
256
303
        elif self.properties["ApprovalPending"]:
257
304
            timeout = datetime.timedelta(milliseconds
258
305
                                         = self.properties
260
307
            last_approval_request = isoformat_to_datetime(
261
308
                self.properties["LastApprovalRequest"])
262
309
            if last_approval_request is not None:
263
 
                timer = max(timeout - (datetime.datetime.utcnow()
264
 
                                       - last_approval_request),
265
 
                            datetime.timedelta())
 
310
                timer = timeout - (datetime.datetime.utcnow()
 
311
                                   - last_approval_request)
266
312
            else:
267
313
                timer = datetime.timedelta()
268
314
            if self.properties["ApprovedByDefault"]:
269
 
                message = "Approval in {}. (d)eny?"
 
315
                message = "Approval in %s. (d)eny?"
270
316
            else:
271
 
                message = "Denial in {}. (a)pprove?"
272
 
            message = message.format(str(timer).rsplit(".", 1)[0])
273
 
            self.using_timer(True)
274
 
        elif self.properties["LastCheckerStatus"] != 0:
275
 
            # When checker has failed, show timer until client expires
 
317
                message = "Denial in %s. (a)pprove?"
 
318
            message = message % unicode(timer).rsplit(".", 1)[0]
 
319
        elif self.last_checker_failed:
 
320
            # When checker has failed, print a timer until client expires
276
321
            expires = self.properties["Expires"]
277
322
            if expires == "":
278
323
                timer = datetime.timedelta(0)
279
324
            else:
280
 
                expires = (datetime.datetime.strptime
281
 
                           (expires, '%Y-%m-%dT%H:%M:%S.%f'))
282
 
                timer = max(expires - datetime.datetime.utcnow(),
283
 
                            datetime.timedelta())
 
325
                expires = datetime.datetime.strptime(expires,
 
326
                                                     '%Y-%m-%dT%H:%M:%S.%f')
 
327
                timer = expires - datetime.datetime.utcnow()
284
328
            message = ('A checker has failed! Time until client'
285
 
                       ' gets disabled: {}'
286
 
                       .format(str(timer).rsplit(".", 1)[0]))
287
 
            self.using_timer(True)
 
329
                       ' gets disabled: %s'
 
330
                           % unicode(timer).rsplit(".", 1)[0])
288
331
        else:
289
332
            message = "enabled"
290
 
            self.using_timer(False)
291
 
        self._text = "{}{}".format(base, message)
292
 
        
 
333
        self._text = "%s%s" % (base, message)
 
334
            
293
335
        if not urwid.supports_unicode():
294
336
            self._text = self._text.encode("ascii", "replace")
295
337
        textlist = [("normal", self._text)]
312
354
        self.update()
313
355
        return True             # Keep calling this
314
356
    
315
 
    def delete(self, **kwargs):
 
357
    def delete(self, *args, **kwargs):
316
358
        if self._update_timer_callback_tag is not None:
317
359
            gobject.source_remove(self._update_timer_callback_tag)
318
360
            self._update_timer_callback_tag = None
321
363
        self.match_objects = ()
322
364
        if self.delete_hook is not None:
323
365
            self.delete_hook(self)
324
 
        return super(MandosClientWidget, self).delete(**kwargs)
 
366
        return super(MandosClientWidget, self).delete(*args, **kwargs)
325
367
    
326
368
    def render(self, maxcolrow, focus=False):
327
369
        """Render differently if we have focus.
369
411
        else:
370
412
            return key
371
413
    
372
 
    def properties_changed(self, interface, properties, invalidated):
373
 
        """Call self.update() if any properties changed.
 
414
    def property_changed(self, property=None, value=None,
 
415
                         *args, **kwargs):
 
416
        """Call self.update() if old value is not new value.
374
417
        This overrides the method from MandosClientPropertyCache"""
375
 
        old_values = { key: self.properties.get(key)
376
 
                       for key in properties.keys() }
377
 
        super(MandosClientWidget, self).properties_changed(
378
 
            interface, properties, invalidated)
379
 
        if any(old_values[key] != self.properties.get(key)
380
 
               for key in old_values):
 
418
        property_name = unicode(property)
 
419
        old_value = self.properties.get(property_name)
 
420
        super(MandosClientWidget, self).property_changed(
 
421
            property=property, value=value, *args, **kwargs)
 
422
        if self.properties.get(property_name) != old_value:
381
423
            self.update()
382
424
 
383
425
 
386
428
    "down" key presses, thus not allowing any containing widgets to
387
429
    use them as an excuse to shift focus away from this widget.
388
430
    """
389
 
    def keypress(self, *args, **kwargs):
390
 
        ret = super(ConstrainedListBox, self).keypress(*args, **kwargs)
 
431
    def keypress(self, maxcolrow, key):
 
432
        ret = super(ConstrainedListBox, self).keypress(maxcolrow, key)
391
433
        if ret in ("up", "down"):
392
434
            return
393
435
        return ret
397
439
    """This is the entire user interface - the whole screen
398
440
    with boxes, lists of client widgets, etc.
399
441
    """
400
 
    def __init__(self, max_log_length=1000, log_level=1):
 
442
    def __init__(self, max_log_length=1000):
401
443
        DBusGMainLoop(set_as_default=True)
402
444
        
403
445
        self.screen = urwid.curses_display.Screen()
406
448
                ("normal",
407
449
                 "default", "default", None),
408
450
                ("bold",
409
 
                 "bold", "default", "bold"),
 
451
                 "default", "default", "bold"),
410
452
                ("underline-blink",
411
 
                 "underline,blink", "default", "underline,blink"),
 
453
                 "default", "default", "underline"),
412
454
                ("standout",
413
 
                 "standout", "default", "standout"),
 
455
                 "default", "default", "standout"),
414
456
                ("bold-underline-blink",
415
 
                 "bold,underline,blink", "default", "bold,underline,blink"),
 
457
                 "default", "default", ("bold", "underline")),
416
458
                ("bold-standout",
417
 
                 "bold,standout", "default", "bold,standout"),
 
459
                 "default", "default", ("bold", "standout")),
418
460
                ("underline-blink-standout",
419
 
                 "underline,blink,standout", "default",
420
 
                 "underline,blink,standout"),
 
461
                 "default", "default", ("underline", "standout")),
421
462
                ("bold-underline-blink-standout",
422
 
                 "bold,underline,blink,standout", "default",
423
 
                 "bold,underline,blink,standout"),
 
463
                 "default", "default", ("bold", "underline",
 
464
                                          "standout")),
424
465
                ))
425
466
        
426
467
        if urwid.supports_unicode():
441
482
        self.log = []
442
483
        self.max_log_length = max_log_length
443
484
        
444
 
        self.log_level = log_level
445
 
        
446
485
        # We keep a reference to the log widget so we can remove it
447
486
        # from the ListWalker without it getting destroyed
448
487
        self.logbox = ConstrainedListBox(self.log)
462
501
        self.main_loop = gobject.MainLoop()
463
502
    
464
503
    def client_not_found(self, fingerprint, address):
465
 
        self.log_message("Client with address {} and fingerprint {}"
466
 
                         " could not be found"
467
 
                         .format(address, fingerprint))
 
504
        self.log_message(("Client with address %s and fingerprint %s"
 
505
                          " could not be found" % (address,
 
506
                                                    fingerprint)))
468
507
    
469
508
    def rebuild(self):
470
509
        """This rebuilds the User Interface.
482
521
            self.uilist.append(self.logbox)
483
522
        self.topwidget = urwid.Pile(self.uilist)
484
523
    
485
 
    def log_message(self, message, level=1):
486
 
        """Log message formatted with timestamp"""
487
 
        if level < self.log_level:
488
 
            return
 
524
    def log_message(self, message):
489
525
        timestamp = datetime.datetime.now().isoformat()
490
 
        self.log_message_raw("{}: {}".format(timestamp, message),
491
 
                             level=level)
 
526
        self.log_message_raw(timestamp + ": " + message)
492
527
    
493
 
    def log_message_raw(self, markup, level=1):
 
528
    def log_message_raw(self, markup):
494
529
        """Add a log message to the log buffer."""
495
 
        if level < self.log_level:
496
 
            return
497
530
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
498
531
        if (self.max_log_length
499
532
            and len(self.log) > self.max_log_length):
506
539
        """Toggle visibility of the log buffer."""
507
540
        self.log_visible = not self.log_visible
508
541
        self.rebuild()
509
 
        self.log_message("Log visibility changed to: {}"
510
 
                         .format(self.log_visible), level=0)
 
542
        #self.log_message("Log visibility changed to: "
 
543
        #                 + unicode(self.log_visible))
511
544
    
512
545
    def change_log_display(self):
513
546
        """Change type of log display.
518
551
            self.log_wrap = "clip"
519
552
        for textwidget in self.log:
520
553
            textwidget.set_wrap_mode(self.log_wrap)
521
 
        self.log_message("Wrap mode: {}".format(self.log_wrap),
522
 
                         level=0)
 
554
        #self.log_message("Wrap mode: " + self.log_wrap)
523
555
    
524
556
    def find_and_remove_client(self, path, name):
525
557
        """Find a client by its object path and remove it.
530
562
            client = self.clients_dict[path]
531
563
        except KeyError:
532
564
            # not found?
533
 
            self.log_message("Unknown client {!r} ({!r}) removed"
534
 
                             .format(name, path))
 
565
            self.log_message("Unknown client %r (%r) removed", name,
 
566
                             path)
535
567
            return
536
568
        client.delete()
537
569
    
554
586
        if path is None:
555
587
            path = client.proxy.object_path
556
588
        self.clients_dict[path] = client
557
 
        self.clients.sort(key=lambda c: c.properties["Name"])
 
589
        self.clients.sort(None, lambda c: c.properties["Name"])
558
590
        self.refresh()
559
591
    
560
592
    def remove_client(self, client, path=None):
562
594
        if path is None:
563
595
            path = client.proxy.object_path
564
596
        del self.clients_dict[path]
 
597
        if not self.clients_dict:
 
598
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
 
599
            # is completely emptied, we need to recreate it.
 
600
            self.clients = urwid.SimpleListWalker([])
 
601
            self.rebuild()
565
602
        self.refresh()
566
603
    
567
604
    def refresh(self):
580
617
        try:
581
618
            mandos_clients = (self.mandos_serv
582
619
                              .GetAllClientsWithProperties())
583
 
            if not mandos_clients:
584
 
                self.log_message_raw(("bold", "Note: Server has no clients."))
585
620
        except dbus.exceptions.DBusException:
586
 
            self.log_message_raw(("bold", "Note: No Mandos server running."))
587
621
            mandos_clients = dbus.Dictionary()
588
622
        
589
623
        (self.mandos_serv
601
635
                            self.client_not_found,
602
636
                            dbus_interface=server_interface,
603
637
                            byte_arrays=True))
604
 
        for path, client in mandos_clients.items():
 
638
        for path, client in mandos_clients.iteritems():
605
639
            client_proxy_object = self.bus.get_object(self.busname,
606
640
                                                      path)
607
641
            self.add_client(MandosClientWidget(server_proxy_object
616
650
                                               logger
617
651
                                               =self.log_message),
618
652
                            path=path)
619
 
        
 
653
 
620
654
        self.refresh()
621
655
        self._input_callback_tag = (gobject.io_add_watch
622
656
                                    (sys.stdin.fileno(),
654
688
            elif key == "window resize":
655
689
                self.size = self.screen.get_cols_rows()
656
690
                self.refresh()
657
 
            elif key == "ctrl l":
658
 
                self.screen.clear()
 
691
            elif key == "\f":  # Ctrl-L
659
692
                self.refresh()
660
693
            elif key == "l" or key == "D":
661
694
                self.toggle_log_display()
673
706
                                            "?: Help",
674
707
                                            "l: Log window toggle",
675
708
                                            "TAB: Switch window",
676
 
                                            "w: Wrap (log lines)",
677
 
                                            "v: Toggle verbose log",
678
 
                                            ))))
 
709
                                            "w: Wrap (log)"))))
679
710
                self.log_message_raw(("bold",
680
711
                                      "  "
681
712
                                      .join(("Clients:",
694
725
                else:
695
726
                    self.topwidget.set_focus(self.logbox)
696
727
                self.refresh()
697
 
            elif key == "v":
698
 
                if self.log_level == 0:
699
 
                    self.log_level = 1
700
 
                    self.log_message("Verbose mode: Off")
701
 
                else:
702
 
                    self.log_level = 0
703
 
                    self.log_message("Verbose mode: On")
704
728
            #elif (key == "end" or key == "meta >" or key == "G"
705
729
            #      or key == ">"):
706
730
            #    pass            # xxx end-of-buffer
729
753
    ui.run()
730
754
except KeyboardInterrupt:
731
755
    ui.screen.stop()
732
 
except Exception as e:
733
 
    ui.log_message(str(e))
 
756
except Exception, e:
 
757
    ui.log_message(unicode(e))
734
758
    ui.screen.stop()
735
759
    raise