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  • Committer: Teddy Hogeborn
  • Date: 2013-10-28 20:08:32 UTC
  • mto: (237.7.272 trunk)
  • mto: This revision was merged to the branch mainline in revision 307.
  • Revision ID: teddy@recompile.se-20131028200832-80d1k8c5e8mugpkx
Syntax fix; use "raise" better in Mandos server.

* mandos: Syntax fix; use "raise" better in Mandos server; Always
          raise instances, not classes, skip argument when re-raising,
          etc.

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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 © 2009-2013 Teddy Hogeborn
 
7
# Copyright © 2009-2013 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
 
# Contact the authors at <mandos@fukt.bsnet.se>.
 
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
35
40
import urwid
36
41
 
37
42
from dbus.mainloop.glib import DBusGMainLoop
38
 
import gobject
 
43
try:
 
44
    import gobject
 
45
except ImportError:
 
46
    from gi.repository import GObject as gobject
39
47
 
40
48
import dbus
41
49
 
42
 
import UserList
43
 
 
44
50
import locale
45
51
 
 
52
if sys.version_info[0] == 2:
 
53
    str = unicode
 
54
 
46
55
locale.setlocale(locale.LC_ALL, '')
47
56
 
48
57
import logging
49
58
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
50
59
 
51
60
# Some useful constants
52
 
domain = 'se.bsnet.fukt'
 
61
domain = 'se.recompile'
53
62
server_interface = domain + '.Mandos'
54
63
client_interface = domain + '.Mandos.Client'
55
 
version = "1.3.1"
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
version = "1.6.2"
64
65
 
65
66
def isoformat_to_datetime(iso):
66
67
    "Parse an ISO 8601 date string to a datetime.datetime()"
83
84
    properties and calls a hook function when any of them are
84
85
    changed.
85
86
    """
86
 
    def __init__(self, proxy_object=None, *args, **kwargs):
 
87
    def __init__(self, proxy_object=None, properties=None, **kwargs):
87
88
        self.proxy = proxy_object # Mandos Client proxy object
88
 
        
89
 
        self.properties = dict()
 
89
        self.properties = dict() if properties is None else properties
90
90
        self.property_changed_match = (
91
91
            self.proxy.connect_to_signal("PropertyChanged",
92
 
                                         self.property_changed,
 
92
                                         self._property_changed,
93
93
                                         client_interface,
94
94
                                         byte_arrays=True))
95
95
        
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)
 
96
        if properties is None:
 
97
            self.properties.update(
 
98
                self.proxy.GetAll(client_interface,
 
99
                                  dbus_interface
 
100
                                  = dbus.PROPERTIES_IFACE))
 
101
        
 
102
        super(MandosClientPropertyCache, self).__init__(**kwargs)
 
103
    
 
104
    def _property_changed(self, property, value):
 
105
        """Helper which takes positional arguments"""
 
106
        return self.property_changed(property=property, value=value)
103
107
    
104
108
    def property_changed(self, property=None, value=None):
105
109
        """This is called whenever we get a PropertyChanged signal
108
112
        # Update properties dict with new value
109
113
        self.properties[property] = value
110
114
    
111
 
    def delete(self, *args, **kwargs):
 
115
    def delete(self):
112
116
        self.property_changed_match.remove()
113
 
        super(MandosClientPropertyCache, self).__init__(
114
 
            *args, **kwargs)
115
117
 
116
118
 
117
119
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
119
121
    """
120
122
    
121
123
    def __init__(self, server_proxy_object=None, update_hook=None,
122
 
                 delete_hook=None, logger=None, *args, **kwargs):
 
124
                 delete_hook=None, logger=None, **kwargs):
123
125
        # Called on update
124
126
        self.update_hook = update_hook
125
127
        # Called on delete
130
132
        self.logger = logger
131
133
        
132
134
        self._update_timer_callback_tag = None
133
 
        self._update_timer_callback_lock = 0
134
 
        self.last_checker_failed = False
135
135
        
136
136
        # The widget shown normally
137
137
        self._text_widget = urwid.Text("")
138
138
        # The widget shown when we have focus
139
139
        self._focus_text_widget = urwid.Text("")
140
 
        super(MandosClientWidget, self).__init__(
141
 
            update_hook=update_hook, delete_hook=delete_hook,
142
 
            *args, **kwargs)
 
140
        super(MandosClientWidget, self).__init__(**kwargs)
143
141
        self.update()
144
142
        self.opened = False
145
143
        
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
144
        self.match_objects = (
165
145
            self.proxy.connect_to_signal("CheckerCompleted",
166
146
                                         self.checker_completed,
182
162
                                         self.rejected,
183
163
                                         client_interface,
184
164
                                         byte_arrays=True))
185
 
        #self.logger('Created client %s' % (self.properties["Name"]))
 
165
        #self.logger('Created client {0}'
 
166
        #            .format(self.properties["Name"]))
186
167
    
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
168
    def using_timer(self, flag):
194
169
        """Call this method with True or False when timer should be
195
170
        activated or deactivated.
196
171
        """
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:
 
172
        if flag and self._update_timer_callback_tag is None:
203
173
            # Will update the shown timer value every second
204
174
            self._update_timer_callback_tag = (gobject.timeout_add
205
175
                                               (1000,
206
176
                                                self.update_timer))
207
 
        elif old and self._update_timer_callback_lock == 0:
 
177
        elif not (flag or self._update_timer_callback_tag is None):
208
178
            gobject.source_remove(self._update_timer_callback_tag)
209
179
            self._update_timer_callback_tag = None
210
180
    
211
181
    def checker_completed(self, exitstatus, condition, command):
212
182
        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))
219
183
            self.update()
220
184
            return
221
185
        # Checker failed
222
 
        if not self.last_checker_failed:
223
 
            self.last_checker_failed = True
224
 
            self.using_timer(True)
225
186
        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)))
 
187
            self.logger('Checker for client {0} (command "{1}")'
 
188
                        ' failed with exit code {2}'
 
189
                        .format(self.properties["Name"], command,
 
190
                                os.WEXITSTATUS(condition)))
230
191
        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)))
 
192
            self.logger('Checker for client {0} (command "{1}") was'
 
193
                        ' killed by signal {2}'
 
194
                        .format(self.properties["Name"], command,
 
195
                                os.WTERMSIG(condition)))
235
196
        elif os.WCOREDUMP(condition):
236
 
            self.logger('Checker for client %s (command "%s")'
 
197
            self.logger('Checker for client {0} (command "{1}")'
237
198
                        ' dumped core'
238
 
                        % (self.properties["Name"], command))
 
199
                        .format(self.properties["Name"], command))
239
200
        else:
240
 
            self.logger('Checker for client %s completed'
241
 
                        ' mysteriously')
 
201
            self.logger('Checker for client {0} completed'
 
202
                        ' mysteriously'
 
203
                        .format(self.properties["Name"]))
242
204
        self.update()
243
205
    
244
206
    def checker_started(self, command):
245
 
        #self.logger('Client %s started checker "%s"'
246
 
        #            % (self.properties["Name"], unicode(command)))
 
207
        """Server signals that a checker started. This could be useful
 
208
           to log in the future. """
 
209
        #self.logger('Client {0} started checker "{1}"'
 
210
        #            .format(self.properties["Name"],
 
211
        #                    str(command)))
247
212
        pass
248
213
    
249
214
    def got_secret(self):
250
 
        self.last_checker_failed = False
251
 
        self.logger('Client %s received its secret'
252
 
                    % self.properties["Name"])
 
215
        self.logger('Client {0} received its secret'
 
216
                    .format(self.properties["Name"]))
253
217
    
254
218
    def need_approval(self, timeout, default):
255
219
        if not default:
256
 
            message = 'Client %s needs approval within %s seconds'
 
220
            message = 'Client {0} needs approval within {1} seconds'
257
221
        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)
 
222
            message = 'Client {0} will get its secret in {1} seconds'
 
223
        self.logger(message.format(self.properties["Name"],
 
224
                                   timeout/1000))
262
225
    
263
226
    def rejected(self, reason):
264
 
        self.logger('Client %s was rejected; reason: %s'
265
 
                    % (self.properties["Name"], reason))
 
227
        self.logger('Client {0} was rejected; reason: {1}'
 
228
                    .format(self.properties["Name"], reason))
266
229
    
267
230
    def selectable(self):
268
231
        """Make this a "selectable" widget.
290
253
                          "bold-underline-blink":
291
254
                              "bold-underline-blink-standout",
292
255
                          }
293
 
 
 
256
        
294
257
        # Rebuild focus and non-focus widgets using current properties
295
 
 
 
258
        
296
259
        # Base part of a client. Name!
297
 
        base = ('%(name)s: '
298
 
                      % {"name": self.properties["Name"]})
 
260
        base = '{name}: '.format(name=self.properties["Name"])
299
261
        if not self.properties["Enabled"]:
300
262
            message = "DISABLED"
 
263
            self.using_timer(False)
301
264
        elif self.properties["ApprovalPending"]:
302
265
            timeout = datetime.timedelta(milliseconds
303
266
                                         = self.properties
305
268
            last_approval_request = isoformat_to_datetime(
306
269
                self.properties["LastApprovalRequest"])
307
270
            if last_approval_request is not None:
308
 
                timer = timeout - (datetime.datetime.utcnow()
309
 
                                   - last_approval_request)
 
271
                timer = max(timeout - (datetime.datetime.utcnow()
 
272
                                       - last_approval_request),
 
273
                            datetime.timedelta())
310
274
            else:
311
275
                timer = datetime.timedelta()
312
276
            if self.properties["ApprovedByDefault"]:
313
 
                message = "Approval in %s. (d)eny?"
 
277
                message = "Approval in {0}. (d)eny?"
314
278
            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
 
279
                message = "Denial in {0}. (a)pprove?"
 
280
            message = message.format(str(timer).rsplit(".", 1)[0])
 
281
            self.using_timer(True)
 
282
        elif self.properties["LastCheckerStatus"] != 0:
 
283
            # When checker has failed, show timer until client expires
319
284
            expires = self.properties["Expires"]
320
285
            if expires == "":
321
286
                timer = datetime.timedelta(0)
322
287
            else:
323
 
                expires = datetime.datetime.strptime(expires,
324
 
                                                     '%Y-%m-%dT%H:%M:%S.%f')
325
 
                timer = expires - datetime.datetime.utcnow()
 
288
                expires = (datetime.datetime.strptime
 
289
                           (expires, '%Y-%m-%dT%H:%M:%S.%f'))
 
290
                timer = max(expires - datetime.datetime.utcnow(),
 
291
                            datetime.timedelta())
326
292
            message = ('A checker has failed! Time until client'
327
 
                       ' gets disabled: %s'
328
 
                           % unicode(timer).rsplit(".", 1)[0])
 
293
                       ' gets disabled: {0}'
 
294
                       .format(str(timer).rsplit(".", 1)[0]))
 
295
            self.using_timer(True)
329
296
        else:
330
297
            message = "enabled"
331
 
        self._text = "%s%s" % (base, message)
332
 
            
 
298
            self.using_timer(False)
 
299
        self._text = "{0}{1}".format(base, message)
 
300
        
333
301
        if not urwid.supports_unicode():
334
302
            self._text = self._text.encode("ascii", "replace")
335
303
        textlist = [("normal", self._text)]
352
320
        self.update()
353
321
        return True             # Keep calling this
354
322
    
355
 
    def delete(self, *args, **kwargs):
 
323
    def delete(self, **kwargs):
356
324
        if self._update_timer_callback_tag is not None:
357
325
            gobject.source_remove(self._update_timer_callback_tag)
358
326
            self._update_timer_callback_tag = None
361
329
        self.match_objects = ()
362
330
        if self.delete_hook is not None:
363
331
            self.delete_hook(self)
364
 
        return super(MandosClientWidget, self).delete(*args, **kwargs)
 
332
        return super(MandosClientWidget, self).delete(**kwargs)
365
333
    
366
334
    def render(self, maxcolrow, focus=False):
367
335
        """Render differently if we have focus.
409
377
        else:
410
378
            return key
411
379
    
412
 
    def property_changed(self, property=None, value=None,
413
 
                         *args, **kwargs):
 
380
    def property_changed(self, property=None, **kwargs):
414
381
        """Call self.update() if old value is not new value.
415
382
        This overrides the method from MandosClientPropertyCache"""
416
 
        property_name = unicode(property)
 
383
        property_name = str(property)
417
384
        old_value = self.properties.get(property_name)
418
385
        super(MandosClientWidget, self).property_changed(
419
 
            property=property, value=value, *args, **kwargs)
 
386
            property=property, **kwargs)
420
387
        if self.properties.get(property_name) != old_value:
421
388
            self.update()
422
389
 
426
393
    "down" key presses, thus not allowing any containing widgets to
427
394
    use them as an excuse to shift focus away from this widget.
428
395
    """
429
 
    def keypress(self, maxcolrow, key):
430
 
        ret = super(ConstrainedListBox, self).keypress(maxcolrow, key)
 
396
    def keypress(self, *args, **kwargs):
 
397
        ret = super(ConstrainedListBox, self).keypress(*args, **kwargs)
431
398
        if ret in ("up", "down"):
432
399
            return
433
400
        return ret
446
413
                ("normal",
447
414
                 "default", "default", None),
448
415
                ("bold",
449
 
                 "default", "default", "bold"),
 
416
                 "bold", "default", "bold"),
450
417
                ("underline-blink",
451
 
                 "default", "default", "underline"),
 
418
                 "underline,blink", "default", "underline,blink"),
452
419
                ("standout",
453
 
                 "default", "default", "standout"),
 
420
                 "standout", "default", "standout"),
454
421
                ("bold-underline-blink",
455
 
                 "default", "default", ("bold", "underline")),
 
422
                 "bold,underline,blink", "default", "bold,underline,blink"),
456
423
                ("bold-standout",
457
 
                 "default", "default", ("bold", "standout")),
 
424
                 "bold,standout", "default", "bold,standout"),
458
425
                ("underline-blink-standout",
459
 
                 "default", "default", ("underline", "standout")),
 
426
                 "underline,blink,standout", "default",
 
427
                 "underline,blink,standout"),
460
428
                ("bold-underline-blink-standout",
461
 
                 "default", "default", ("bold", "underline",
462
 
                                          "standout")),
 
429
                 "bold,underline,blink,standout", "default",
 
430
                 "bold,underline,blink,standout"),
463
431
                ))
464
432
        
465
433
        if urwid.supports_unicode():
497
465
        
498
466
        self.busname = domain + '.Mandos'
499
467
        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
468
    
543
469
    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)))
 
470
        self.log_message("Client with address {0} and fingerprint"
 
471
                         " {1} could not be found"
 
472
                         .format(address, fingerprint))
547
473
    
548
474
    def rebuild(self):
549
475
        """This rebuilds the User Interface.
559
485
                                                     self.divider)))
560
486
        if self.log_visible:
561
487
            self.uilist.append(self.logbox)
562
 
            pass
563
488
        self.topwidget = urwid.Pile(self.uilist)
564
489
    
565
490
    def log_message(self, message):
 
491
        """Log message formatted with timestamp"""
566
492
        timestamp = datetime.datetime.now().isoformat()
567
493
        self.log_message_raw(timestamp + ": " + message)
568
494
    
581
507
        self.log_visible = not self.log_visible
582
508
        self.rebuild()
583
509
        #self.log_message("Log visibility changed to: "
584
 
        #                 + unicode(self.log_visible))
 
510
        #                 + str(self.log_visible))
585
511
    
586
512
    def change_log_display(self):
587
513
        """Change type of log display.
603
529
            client = self.clients_dict[path]
604
530
        except KeyError:
605
531
            # not found?
606
 
            self.log_message("Unknown client %r (%r) removed", name,
607
 
                             path)
 
532
            self.log_message("Unknown client {0!r} ({1!r}) removed"
 
533
                             .format(name, path))
608
534
            return
609
535
        client.delete()
610
536
    
627
553
        if path is None:
628
554
            path = client.proxy.object_path
629
555
        self.clients_dict[path] = client
630
 
        self.clients.sort(None, lambda c: c.properties["Name"])
 
556
        self.clients.sort(key=lambda c: c.properties["Name"])
631
557
        self.refresh()
632
558
    
633
559
    def remove_client(self, client, path=None):
635
561
        if path is None:
636
562
            path = client.proxy.object_path
637
563
        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
564
        self.refresh()
644
565
    
645
566
    def refresh(self):
649
570
    
650
571
    def run(self):
651
572
        """Start the main loop and exit when it's done."""
 
573
        self.bus = dbus.SystemBus()
 
574
        mandos_dbus_objc = self.bus.get_object(
 
575
            self.busname, "/", follow_name_owner_changes=True)
 
576
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
 
577
                                          dbus_interface
 
578
                                          = server_interface)
 
579
        try:
 
580
            mandos_clients = (self.mandos_serv
 
581
                              .GetAllClientsWithProperties())
 
582
            if not mandos_clients:
 
583
                self.log_message_raw(("bold", "Note: Server has no clients."))
 
584
        except dbus.exceptions.DBusException:
 
585
            self.log_message_raw(("bold", "Note: No Mandos server running."))
 
586
            mandos_clients = dbus.Dictionary()
 
587
        
 
588
        (self.mandos_serv
 
589
         .connect_to_signal("ClientRemoved",
 
590
                            self.find_and_remove_client,
 
591
                            dbus_interface=server_interface,
 
592
                            byte_arrays=True))
 
593
        (self.mandos_serv
 
594
         .connect_to_signal("ClientAdded",
 
595
                            self.add_new_client,
 
596
                            dbus_interface=server_interface,
 
597
                            byte_arrays=True))
 
598
        (self.mandos_serv
 
599
         .connect_to_signal("ClientNotFound",
 
600
                            self.client_not_found,
 
601
                            dbus_interface=server_interface,
 
602
                            byte_arrays=True))
 
603
        for path, client in mandos_clients.items():
 
604
            client_proxy_object = self.bus.get_object(self.busname,
 
605
                                                      path)
 
606
            self.add_client(MandosClientWidget(server_proxy_object
 
607
                                               =self.mandos_serv,
 
608
                                               proxy_object
 
609
                                               =client_proxy_object,
 
610
                                               properties=client,
 
611
                                               update_hook
 
612
                                               =self.refresh,
 
613
                                               delete_hook
 
614
                                               =self.remove_client,
 
615
                                               logger
 
616
                                               =self.log_message),
 
617
                            path=path)
 
618
        
652
619
        self.refresh()
653
620
        self._input_callback_tag = (gobject.io_add_watch
654
621
                                    (sys.stdin.fileno(),
751
718
    ui.run()
752
719
except KeyboardInterrupt:
753
720
    ui.screen.stop()
754
 
except Exception, e:
755
 
    ui.log_message(unicode(e))
 
721
except Exception as e:
 
722
    ui.log_message(str(e))
756
723
    ui.screen.stop()
757
724
    raise