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  • Committer: Teddy Hogeborn
  • Date: 2015-01-25 00:02:51 UTC
  • Revision ID: teddy@recompile.se-20150125000251-j2bw50gfq9smqyxe
mandos.xml (SEE ALSO): Update links.

Update link to GnuPG home page, change reference from TLS 1.1 to TLS
1.2, and change to latest RFC for using OpenPGP keys with TLS (and use
its correct title).

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mandos-monitor
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3
# 
4
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# Mandos Monitor - Control and monitor the Mandos server
5
5
# 
6
 
# Copyright © 2009-2012 Teddy Hogeborn
7
 
# Copyright © 2009-2012 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 = "1.5.3"
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
130
        
135
131
        # The widget shown normally
136
132
        self._text_widget = urwid.Text("")
137
133
        # The widget shown when we have focus
138
134
        self._focus_text_widget = urwid.Text("")
139
 
        super(MandosClientWidget, self).__init__(
140
 
            update_hook=update_hook, delete_hook=delete_hook,
141
 
            *args, **kwargs)
 
135
        super(MandosClientWidget, self).__init__(**kwargs)
142
136
        self.update()
143
137
        self.opened = False
144
138
        
145
 
        last_checked_ok = isoformat_to_datetime(self.properties
146
 
                                                ["LastCheckedOK"])
147
 
        
148
 
        if self.properties ["LastCheckerStatus"] != 0:
149
 
            self.using_timer(True)
150
 
        
151
 
        if self.need_approval:
152
 
            self.using_timer(True)
153
 
        
154
139
        self.match_objects = (
155
140
            self.proxy.connect_to_signal("CheckerCompleted",
156
141
                                         self.checker_completed,
172
157
                                         self.rejected,
173
158
                                         client_interface,
174
159
                                         byte_arrays=True))
175
 
        #self.logger('Created client %s' % (self.properties["Name"]))
176
 
    
177
 
    def property_changed(self, property=None, value=None):
178
 
        super(self, MandosClientWidget).property_changed(property,
179
 
                                                         value)
180
 
        if property == "ApprovalPending":
181
 
            using_timer(bool(value))
182
 
        if property == "LastCheckerStatus":
183
 
            using_timer(value != 0)
184
 
            #self.logger('Checker for client %s (command "%s")'
185
 
            #            ' was successful'
186
 
            #            % (self.properties["Name"], command))
 
160
        self.logger('Created client {}'
 
161
                    .format(self.properties["Name"]), level=0)
187
162
    
188
163
    def using_timer(self, flag):
189
164
        """Call this method with True or False when timer should be
190
165
        activated or deactivated.
191
166
        """
192
 
        old = self._update_timer_callback_lock
193
 
        if flag:
194
 
            self._update_timer_callback_lock += 1
195
 
        else:
196
 
            self._update_timer_callback_lock -= 1
197
 
        if old == 0 and self._update_timer_callback_lock:
 
167
        if flag and self._update_timer_callback_tag is None:
198
168
            # Will update the shown timer value every second
199
169
            self._update_timer_callback_tag = (gobject.timeout_add
200
170
                                               (1000,
201
171
                                                self.update_timer))
202
 
        elif old and self._update_timer_callback_lock == 0:
 
172
        elif not (flag or self._update_timer_callback_tag is None):
203
173
            gobject.source_remove(self._update_timer_callback_tag)
204
174
            self._update_timer_callback_tag = None
205
175
    
206
176
    def checker_completed(self, exitstatus, condition, command):
207
177
        if exitstatus == 0:
 
178
            self.logger('Checker for client {} (command "{}")'
 
179
                        ' succeeded'.format(self.properties["Name"],
 
180
                                            command), level=0)
208
181
            self.update()
209
182
            return
210
183
        # Checker failed
211
184
        if os.WIFEXITED(condition):
212
 
            self.logger('Checker for client %s (command "%s")'
213
 
                        ' failed with exit code %s'
214
 
                        % (self.properties["Name"], command,
215
 
                           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)))
216
189
        elif os.WIFSIGNALED(condition):
217
 
            self.logger('Checker for client %s (command "%s")'
218
 
                        ' was killed by signal %s'
219
 
                        % (self.properties["Name"], command,
220
 
                           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)))
221
194
        elif os.WCOREDUMP(condition):
222
 
            self.logger('Checker for client %s (command "%s")'
223
 
                        ' dumped core'
224
 
                        % (self.properties["Name"], command))
 
195
            self.logger('Checker for client {} (command "{}") dumped'
 
196
                        ' core'.format(self.properties["Name"],
 
197
                                       command))
225
198
        else:
226
 
            self.logger('Checker for client %s completed'
227
 
                        ' mysteriously')
 
199
            self.logger('Checker for client {} completed'
 
200
                        ' mysteriously'
 
201
                        .format(self.properties["Name"]))
228
202
        self.update()
229
203
    
230
204
    def checker_started(self, command):
231
 
        """Server signals that a checker started. This could be useful
232
 
           to log in the future. """
233
 
        #self.logger('Client %s started checker "%s"'
234
 
        #            % (self.properties["Name"], unicode(command)))
235
 
        pass
 
205
        """Server signals that a checker started."""
 
206
        self.logger('Client {} started checker "{}"'
 
207
                    .format(self.properties["Name"],
 
208
                            command), level=0)
236
209
    
237
210
    def got_secret(self):
238
 
        self.logger('Client %s received its secret'
239
 
                    % self.properties["Name"])
 
211
        self.logger('Client {} received its secret'
 
212
                    .format(self.properties["Name"]))
240
213
    
241
214
    def need_approval(self, timeout, default):
242
215
        if not default:
243
 
            message = 'Client %s needs approval within %s seconds'
 
216
            message = 'Client {} needs approval within {} seconds'
244
217
        else:
245
 
            message = 'Client %s will get its secret in %s seconds'
246
 
        self.logger(message
247
 
                    % (self.properties["Name"], timeout/1000))
248
 
        self.using_timer(True)
 
218
            message = 'Client {} will get its secret in {} seconds'
 
219
        self.logger(message.format(self.properties["Name"],
 
220
                                   timeout/1000))
249
221
    
250
222
    def rejected(self, reason):
251
 
        self.logger('Client %s was rejected; reason: %s'
252
 
                    % (self.properties["Name"], reason))
 
223
        self.logger('Client {} was rejected; reason: {}'
 
224
                    .format(self.properties["Name"], reason))
253
225
    
254
226
    def selectable(self):
255
227
        """Make this a "selectable" widget.
277
249
                          "bold-underline-blink":
278
250
                              "bold-underline-blink-standout",
279
251
                          }
280
 
 
 
252
        
281
253
        # Rebuild focus and non-focus widgets using current properties
282
 
 
 
254
        
283
255
        # Base part of a client. Name!
284
 
        base = ('%(name)s: '
285
 
                      % {"name": self.properties["Name"]})
 
256
        base = '{name}: '.format(name=self.properties["Name"])
286
257
        if not self.properties["Enabled"]:
287
258
            message = "DISABLED"
 
259
            self.using_timer(False)
288
260
        elif self.properties["ApprovalPending"]:
289
261
            timeout = datetime.timedelta(milliseconds
290
262
                                         = self.properties
292
264
            last_approval_request = isoformat_to_datetime(
293
265
                self.properties["LastApprovalRequest"])
294
266
            if last_approval_request is not None:
295
 
                timer = timeout - (datetime.datetime.utcnow()
296
 
                                   - last_approval_request)
 
267
                timer = max(timeout - (datetime.datetime.utcnow()
 
268
                                       - last_approval_request),
 
269
                            datetime.timedelta())
297
270
            else:
298
271
                timer = datetime.timedelta()
299
272
            if self.properties["ApprovedByDefault"]:
300
 
                message = "Approval in %s. (d)eny?"
 
273
                message = "Approval in {}. (d)eny?"
301
274
            else:
302
 
                message = "Denial in %s. (a)pprove?"
303
 
            message = message % unicode(timer).rsplit(".", 1)[0]
 
275
                message = "Denial in {}. (a)pprove?"
 
276
            message = message.format(str(timer).rsplit(".", 1)[0])
 
277
            self.using_timer(True)
304
278
        elif self.properties["LastCheckerStatus"] != 0:
305
 
            # When checker has failed, print a timer until client expires
 
279
            # When checker has failed, show timer until client expires
306
280
            expires = self.properties["Expires"]
307
281
            if expires == "":
308
282
                timer = datetime.timedelta(0)
309
283
            else:
310
 
                expires = datetime.datetime.strptime(expires,
311
 
                                                     '%Y-%m-%dT%H:%M:%S.%f')
312
 
                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())
313
288
            message = ('A checker has failed! Time until client'
314
 
                       ' gets disabled: %s'
315
 
                           % unicode(timer).rsplit(".", 1)[0])
 
289
                       ' gets disabled: {}'
 
290
                       .format(str(timer).rsplit(".", 1)[0]))
 
291
            self.using_timer(True)
316
292
        else:
317
293
            message = "enabled"
318
 
        self._text = "%s%s" % (base, message)
319
 
            
 
294
            self.using_timer(False)
 
295
        self._text = "{}{}".format(base, message)
 
296
        
320
297
        if not urwid.supports_unicode():
321
298
            self._text = self._text.encode("ascii", "replace")
322
299
        textlist = [("normal", self._text)]
339
316
        self.update()
340
317
        return True             # Keep calling this
341
318
    
342
 
    def delete(self, *args, **kwargs):
 
319
    def delete(self, **kwargs):
343
320
        if self._update_timer_callback_tag is not None:
344
321
            gobject.source_remove(self._update_timer_callback_tag)
345
322
            self._update_timer_callback_tag = None
348
325
        self.match_objects = ()
349
326
        if self.delete_hook is not None:
350
327
            self.delete_hook(self)
351
 
        return super(MandosClientWidget, self).delete(*args, **kwargs)
 
328
        return super(MandosClientWidget, self).delete(**kwargs)
352
329
    
353
330
    def render(self, maxcolrow, focus=False):
354
331
        """Render differently if we have focus.
396
373
        else:
397
374
            return key
398
375
    
399
 
    def property_changed(self, property=None, value=None,
400
 
                         *args, **kwargs):
401
 
        """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.
402
378
        This overrides the method from MandosClientPropertyCache"""
403
 
        property_name = unicode(property)
404
 
        old_value = self.properties.get(property_name)
405
 
        super(MandosClientWidget, self).property_changed(
406
 
            property=property, value=value, *args, **kwargs)
407
 
        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):
408
385
            self.update()
409
386
 
410
387
 
413
390
    "down" key presses, thus not allowing any containing widgets to
414
391
    use them as an excuse to shift focus away from this widget.
415
392
    """
416
 
    def keypress(self, maxcolrow, key):
417
 
        ret = super(ConstrainedListBox, self).keypress(maxcolrow, key)
 
393
    def keypress(self, *args, **kwargs):
 
394
        ret = super(ConstrainedListBox, self).keypress(*args, **kwargs)
418
395
        if ret in ("up", "down"):
419
396
            return
420
397
        return ret
424
401
    """This is the entire user interface - the whole screen
425
402
    with boxes, lists of client widgets, etc.
426
403
    """
427
 
    def __init__(self, max_log_length=1000):
 
404
    def __init__(self, max_log_length=1000, log_level=1):
428
405
        DBusGMainLoop(set_as_default=True)
429
406
        
430
407
        self.screen = urwid.curses_display.Screen()
433
410
                ("normal",
434
411
                 "default", "default", None),
435
412
                ("bold",
436
 
                 "default", "default", "bold"),
 
413
                 "bold", "default", "bold"),
437
414
                ("underline-blink",
438
 
                 "default", "default", "underline"),
 
415
                 "underline,blink", "default", "underline,blink"),
439
416
                ("standout",
440
 
                 "default", "default", "standout"),
 
417
                 "standout", "default", "standout"),
441
418
                ("bold-underline-blink",
442
 
                 "default", "default", ("bold", "underline")),
 
419
                 "bold,underline,blink", "default", "bold,underline,blink"),
443
420
                ("bold-standout",
444
 
                 "default", "default", ("bold", "standout")),
 
421
                 "bold,standout", "default", "bold,standout"),
445
422
                ("underline-blink-standout",
446
 
                 "default", "default", ("underline", "standout")),
 
423
                 "underline,blink,standout", "default",
 
424
                 "underline,blink,standout"),
447
425
                ("bold-underline-blink-standout",
448
 
                 "default", "default", ("bold", "underline",
449
 
                                          "standout")),
 
426
                 "bold,underline,blink,standout", "default",
 
427
                 "bold,underline,blink,standout"),
450
428
                ))
451
429
        
452
430
        if urwid.supports_unicode():
467
445
        self.log = []
468
446
        self.max_log_length = max_log_length
469
447
        
 
448
        self.log_level = log_level
 
449
        
470
450
        # We keep a reference to the log widget so we can remove it
471
451
        # from the ListWalker without it getting destroyed
472
452
        self.logbox = ConstrainedListBox(self.log)
486
466
        self.main_loop = gobject.MainLoop()
487
467
    
488
468
    def client_not_found(self, fingerprint, address):
489
 
        self.log_message(("Client with address %s and fingerprint %s"
490
 
                          " could not be found" % (address,
491
 
                                                    fingerprint)))
 
469
        self.log_message("Client with address {} and fingerprint {}"
 
470
                         " could not be found"
 
471
                         .format(address, fingerprint))
492
472
    
493
473
    def rebuild(self):
494
474
        """This rebuilds the User Interface.
506
486
            self.uilist.append(self.logbox)
507
487
        self.topwidget = urwid.Pile(self.uilist)
508
488
    
509
 
    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
510
493
        timestamp = datetime.datetime.now().isoformat()
511
 
        self.log_message_raw(timestamp + ": " + message)
 
494
        self.log_message_raw("{}: {}".format(timestamp, message),
 
495
                             level=level)
512
496
    
513
 
    def log_message_raw(self, markup):
 
497
    def log_message_raw(self, markup, level=1):
514
498
        """Add a log message to the log buffer."""
 
499
        if level < self.log_level:
 
500
            return
515
501
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
516
502
        if (self.max_log_length
517
503
            and len(self.log) > self.max_log_length):
524
510
        """Toggle visibility of the log buffer."""
525
511
        self.log_visible = not self.log_visible
526
512
        self.rebuild()
527
 
        #self.log_message("Log visibility changed to: "
528
 
        #                 + unicode(self.log_visible))
 
513
        self.log_message("Log visibility changed to: {}"
 
514
                         .format(self.log_visible), level=0)
529
515
    
530
516
    def change_log_display(self):
531
517
        """Change type of log display.
536
522
            self.log_wrap = "clip"
537
523
        for textwidget in self.log:
538
524
            textwidget.set_wrap_mode(self.log_wrap)
539
 
        #self.log_message("Wrap mode: " + self.log_wrap)
 
525
        self.log_message("Wrap mode: {}".format(self.log_wrap),
 
526
                         level=0)
540
527
    
541
528
    def find_and_remove_client(self, path, name):
542
529
        """Find a client by its object path and remove it.
547
534
            client = self.clients_dict[path]
548
535
        except KeyError:
549
536
            # not found?
550
 
            self.log_message("Unknown client %r (%r) removed", name,
551
 
                             path)
 
537
            self.log_message("Unknown client {!r} ({!r}) removed"
 
538
                             .format(name, path))
552
539
            return
553
540
        client.delete()
554
541
    
571
558
        if path is None:
572
559
            path = client.proxy.object_path
573
560
        self.clients_dict[path] = client
574
 
        self.clients.sort(None, lambda c: c.properties["Name"])
 
561
        self.clients.sort(key=lambda c: c.properties["Name"])
575
562
        self.refresh()
576
563
    
577
564
    def remove_client(self, client, path=None):
579
566
        if path is None:
580
567
            path = client.proxy.object_path
581
568
        del self.clients_dict[path]
582
 
        if not self.clients_dict:
583
 
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
584
 
            # is completely emptied, we need to recreate it.
585
 
            self.clients = urwid.SimpleListWalker([])
586
 
            self.rebuild()
587
569
        self.refresh()
588
570
    
589
571
    def refresh(self):
602
584
        try:
603
585
            mandos_clients = (self.mandos_serv
604
586
                              .GetAllClientsWithProperties())
 
587
            if not mandos_clients:
 
588
                self.log_message_raw(("bold", "Note: Server has no clients."))
605
589
        except dbus.exceptions.DBusException:
 
590
            self.log_message_raw(("bold", "Note: No Mandos server running."))
606
591
            mandos_clients = dbus.Dictionary()
607
592
        
608
593
        (self.mandos_serv
620
605
                            self.client_not_found,
621
606
                            dbus_interface=server_interface,
622
607
                            byte_arrays=True))
623
 
        for path, client in mandos_clients.iteritems():
 
608
        for path, client in mandos_clients.items():
624
609
            client_proxy_object = self.bus.get_object(self.busname,
625
610
                                                      path)
626
611
            self.add_client(MandosClientWidget(server_proxy_object
635
620
                                               logger
636
621
                                               =self.log_message),
637
622
                            path=path)
638
 
 
 
623
        
639
624
        self.refresh()
640
625
        self._input_callback_tag = (gobject.io_add_watch
641
626
                                    (sys.stdin.fileno(),
673
658
            elif key == "window resize":
674
659
                self.size = self.screen.get_cols_rows()
675
660
                self.refresh()
676
 
            elif key == "\f":  # Ctrl-L
 
661
            elif key == "ctrl l":
 
662
                self.screen.clear()
677
663
                self.refresh()
678
664
            elif key == "l" or key == "D":
679
665
                self.toggle_log_display()
691
677
                                            "?: Help",
692
678
                                            "l: Log window toggle",
693
679
                                            "TAB: Switch window",
694
 
                                            "w: Wrap (log)"))))
 
680
                                            "w: Wrap (log lines)",
 
681
                                            "v: Toggle verbose log",
 
682
                                            ))))
695
683
                self.log_message_raw(("bold",
696
684
                                      "  "
697
685
                                      .join(("Clients:",
710
698
                else:
711
699
                    self.topwidget.set_focus(self.logbox)
712
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")
713
708
            #elif (key == "end" or key == "meta >" or key == "G"
714
709
            #      or key == ">"):
715
710
            #    pass            # xxx end-of-buffer
738
733
    ui.run()
739
734
except KeyboardInterrupt:
740
735
    ui.screen.stop()
741
 
except Exception, e:
742
 
    ui.log_message(unicode(e))
 
736
except Exception as e:
 
737
    ui.log_message(str(e))
743
738
    ui.screen.stop()
744
739
    raise