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  • Committer: Teddy Hogeborn
  • Date: 2016-12-12 18:25:02 UTC
  • Revision ID: teddy@recompile.se-20161212182502-72seb9hxiu65cgwa
Add spaces around all '=' signs in all C code.

* plugin-runner.c: Add white space around all '=' signs.
* plugins.d/mandos-client.c: - '' -
* plugins.d/plymouth.c: - '' -

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1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
 
3
#
 
4
# Mandos Monitor - Control and monitor the Mandos server
 
5
#
 
6
# Copyright © 2009-2016 Teddy Hogeborn
 
7
# Copyright © 2009-2016 Björn Påhlsson
 
8
#
 
9
# This program is free software: you can redistribute it and/or modify
 
10
# it under the terms of the GNU General Public License as published by
 
11
# the Free Software Foundation, either version 3 of the License, or
 
12
# (at your option) any later version.
 
13
#
 
14
#     This program is distributed in the hope that it will be useful,
 
15
#     but WITHOUT ANY WARRANTY; without even the implied warranty of
 
16
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
17
#     GNU General Public License for more details.
 
18
#
 
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/>.
 
22
#
 
23
# Contact the authors at <mandos@recompile.se>.
 
24
#
3
25
 
4
 
from __future__ import division, absolute_import, with_statement
 
26
from __future__ import (division, absolute_import, print_function,
 
27
                        unicode_literals)
 
28
try:
 
29
    from future_builtins import *
 
30
except ImportError:
 
31
    pass
5
32
 
6
33
import sys
7
34
import os
8
 
import signal
9
35
 
10
36
import datetime
11
37
 
13
39
import urwid
14
40
 
15
41
from dbus.mainloop.glib import DBusGMainLoop
16
 
import gobject
 
42
from gi.repository import GLib
17
43
 
18
44
import dbus
19
45
 
20
 
import UserList
21
 
 
22
46
import locale
23
47
 
24
 
locale.setlocale(locale.LC_ALL, u'')
25
 
 
26
48
import logging
 
49
 
 
50
if sys.version_info.major == 2:
 
51
    str = unicode
 
52
 
 
53
locale.setlocale(locale.LC_ALL, '')
 
54
 
27
55
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
28
56
 
29
57
# Some useful constants
30
 
domain = 'se.bsnet.fukt'
 
58
domain = 'se.recompile'
31
59
server_interface = domain + '.Mandos'
32
60
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)
 
61
version = "1.7.13"
 
62
 
 
63
try:
 
64
    dbus.OBJECT_MANAGER_IFACE
 
65
except AttributeError:
 
66
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
 
67
 
42
68
 
43
69
def isoformat_to_datetime(iso):
44
70
    "Parse an ISO 8601 date string to a datetime.datetime()"
45
71
    if not iso:
46
72
        return None
47
 
    d, t = iso.split(u"T", 1)
48
 
    year, month, day = d.split(u"-", 2)
49
 
    hour, minute, second = t.split(u":", 2)
 
73
    d, t = iso.split("T", 1)
 
74
    year, month, day = d.split("-", 2)
 
75
    hour, minute, second = t.split(":", 2)
50
76
    second, fraction = divmod(float(second), 1)
51
77
    return datetime.datetime(int(year),
52
78
                             int(month),
53
79
                             int(day),
54
80
                             int(hour),
55
81
                             int(minute),
56
 
                             int(second),           # Whole seconds
57
 
                             int(fraction*1000000)) # Microseconds
 
82
                             int(second),            # Whole seconds
 
83
                             int(fraction*1000000))  # Microseconds
 
84
 
58
85
 
59
86
class MandosClientPropertyCache(object):
60
87
    """This wraps a Mandos Client D-Bus proxy object, caches the
61
88
    properties and calls a hook function when any of them are
62
89
    changed.
63
90
    """
64
 
    def __init__(self, proxy_object=None, *args, **kwargs):
65
 
        self.proxy = proxy_object # Mandos Client proxy object
66
 
        
67
 
        self.properties = dict()
68
 
        self.proxy.connect_to_signal(u"PropertyChanged",
69
 
                                     self.property_changed,
70
 
                                     client_interface,
71
 
                                     byte_arrays=True)
72
 
        
73
 
        self.properties.update(
74
 
            self.proxy.GetAll(client_interface,
75
 
                              dbus_interface = dbus.PROPERTIES_IFACE))
76
 
 
77
 
        #XXX This break good super behaviour!
78
 
#        super(MandosClientPropertyCache, self).__init__(
79
 
#            *args, **kwargs)
80
 
    
81
 
    def property_changed(self, property=None, value=None):
82
 
        """This is called whenever we get a PropertyChanged signal
83
 
        It updates the changed property in the "properties" dict.
 
91
    def __init__(self, proxy_object=None, properties=None, **kwargs):
 
92
        self.proxy = proxy_object  # Mandos Client proxy object
 
93
        self.properties = dict() if properties is None else properties
 
94
        self.property_changed_match = (
 
95
            self.proxy.connect_to_signal("PropertiesChanged",
 
96
                                         self.properties_changed,
 
97
                                         dbus.PROPERTIES_IFACE,
 
98
                                         byte_arrays=True))
 
99
 
 
100
        if properties is None:
 
101
            self.properties.update(self.proxy.GetAll(
 
102
                client_interface,
 
103
                dbus_interface=dbus.PROPERTIES_IFACE))
 
104
 
 
105
        super(MandosClientPropertyCache, self).__init__(**kwargs)
 
106
 
 
107
    def properties_changed(self, interface, properties, invalidated):
 
108
        """This is called whenever we get a PropertiesChanged signal
 
109
        It updates the changed properties in the "properties" dict.
84
110
        """
85
111
        # Update properties dict with new value
86
 
        self.properties[property] = value
 
112
        if interface == client_interface:
 
113
            self.properties.update(properties)
 
114
 
 
115
    def delete(self):
 
116
        self.property_changed_match.remove()
87
117
 
88
118
 
89
119
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
90
120
    """A Mandos Client which is visible on the screen.
91
121
    """
92
 
    
 
122
 
93
123
    def __init__(self, server_proxy_object=None, update_hook=None,
94
 
                 delete_hook=None, logger=None, *args, **kwargs):
 
124
                 delete_hook=None, logger=None, **kwargs):
95
125
        # Called on update
96
126
        self.update_hook = update_hook
97
127
        # Called on delete
100
130
        self.server_proxy_object = server_proxy_object
101
131
        # Logger
102
132
        self.logger = logger
103
 
        
 
133
 
104
134
        self._update_timer_callback_tag = None
105
 
        self._update_timer_callback_lock = 0
106
 
        self.last_checker_failed = False
107
 
        
 
135
 
108
136
        # The widget shown normally
109
 
        self._text_widget = urwid.Text(u"")
 
137
        self._text_widget = urwid.Text("")
110
138
        # The widget shown when we have focus
111
 
        self._focus_text_widget = urwid.Text(u"")
112
 
        super(MandosClientWidget, self).__init__(
113
 
            update_hook=update_hook, delete_hook=delete_hook,
114
 
            *args, **kwargs)
 
139
        self._focus_text_widget = urwid.Text("")
 
140
        super(MandosClientWidget, self).__init__(**kwargs)
115
141
        self.update()
116
142
        self.opened = False
117
 
        
118
 
        last_checked_ok = isoformat_to_datetime(self.properties
119
 
                                                [u"LastCheckedOK"])
120
 
        if last_checked_ok is None:
121
 
            self.last_checker_failed = True
122
 
        else:
123
 
            self.last_checker_failed = ((datetime.datetime.utcnow()
124
 
                                         - last_checked_ok)
125
 
                                        > datetime.timedelta
126
 
                                        (milliseconds=
127
 
                                         self.properties
128
 
                                         [u"Interval"]))
129
 
        
130
 
        if self.last_checker_failed:
131
 
            self.using_timer(True)
132
 
        
133
 
        if self.need_approval:
134
 
            self.using_timer(True)
135
 
        
136
 
        self.proxy.connect_to_signal(u"CheckerCompleted",
137
 
                                     self.checker_completed,
138
 
                                     client_interface,
139
 
                                     byte_arrays=True)
140
 
        self.proxy.connect_to_signal(u"CheckerStarted",
141
 
                                     self.checker_started,
142
 
                                     client_interface,
143
 
                                     byte_arrays=True)
144
 
        self.proxy.connect_to_signal(u"GotSecret",
145
 
                                     self.got_secret,
146
 
                                     client_interface,
147
 
                                     byte_arrays=True)
148
 
        self.proxy.connect_to_signal(u"NeedApproval",
149
 
                                     self.need_approval,
150
 
                                     client_interface,
151
 
                                     byte_arrays=True)
152
 
        self.proxy.connect_to_signal(u"Rejected",
153
 
                                     self.rejected,
154
 
                                     client_interface,
155
 
                                     byte_arrays=True)
156
 
    
157
 
    def property_changed(self, property=None, value=None):
158
 
        super(self, MandosClientWidget).property_changed(property,
159
 
                                                         value)
160
 
        if property == u"ApprovalPending":
161
 
            using_timer(bool(value))
162
 
        
 
143
 
 
144
        self.match_objects = (
 
145
            self.proxy.connect_to_signal("CheckerCompleted",
 
146
                                         self.checker_completed,
 
147
                                         client_interface,
 
148
                                         byte_arrays=True),
 
149
            self.proxy.connect_to_signal("CheckerStarted",
 
150
                                         self.checker_started,
 
151
                                         client_interface,
 
152
                                         byte_arrays=True),
 
153
            self.proxy.connect_to_signal("GotSecret",
 
154
                                         self.got_secret,
 
155
                                         client_interface,
 
156
                                         byte_arrays=True),
 
157
            self.proxy.connect_to_signal("NeedApproval",
 
158
                                         self.need_approval,
 
159
                                         client_interface,
 
160
                                         byte_arrays=True),
 
161
            self.proxy.connect_to_signal("Rejected",
 
162
                                         self.rejected,
 
163
                                         client_interface,
 
164
                                         byte_arrays=True))
 
165
        self.logger('Created client {}'
 
166
                    .format(self.properties["Name"]), level=0)
 
167
 
163
168
    def using_timer(self, flag):
164
169
        """Call this method with True or False when timer should be
165
170
        activated or deactivated.
166
171
        """
167
 
        old = self._update_timer_callback_lock
168
 
        if flag:
169
 
            self._update_timer_callback_lock += 1
170
 
        else:
171
 
            self._update_timer_callback_lock -= 1
172
 
        if old == 0 and self._update_timer_callback_lock:
173
 
            self._update_timer_callback_tag = (gobject.timeout_add
 
172
        if flag and self._update_timer_callback_tag is None:
 
173
            # Will update the shown timer value every second
 
174
            self._update_timer_callback_tag = (GLib.timeout_add
174
175
                                               (1000,
175
176
                                                self.update_timer))
176
 
        elif old and self._update_timer_callback_lock == 0:
177
 
            gobject.source_remove(self._update_timer_callback_tag)
 
177
        elif not (flag or self._update_timer_callback_tag is None):
 
178
            GLib.source_remove(self._update_timer_callback_tag)
178
179
            self._update_timer_callback_tag = None
179
 
    
 
180
 
180
181
    def checker_completed(self, exitstatus, condition, command):
181
182
        if exitstatus == 0:
182
 
            if self.last_checker_failed:
183
 
                self.last_checker_failed = False
184
 
                self.using_timer(False)
185
 
            #self.logger(u'Checker for client %s (command "%s")'
186
 
            #            u' was successful'
187
 
            #            % (self.properties[u"Name"], command))
 
183
            self.logger('Checker for client {} (command "{}")'
 
184
                        ' succeeded'.format(self.properties["Name"],
 
185
                                            command), level=0)
188
186
            self.update()
189
187
            return
190
188
        # Checker failed
191
 
        if not self.last_checker_failed:
192
 
            self.last_checker_failed = True
193
 
            self.using_timer(True)
194
189
        if os.WIFEXITED(condition):
195
 
            self.logger(u'Checker for client %s (command "%s")'
196
 
                        u' failed with exit code %s'
197
 
                        % (self.properties[u"Name"], command,
198
 
                           os.WEXITSTATUS(condition)))
 
190
            self.logger('Checker for client {} (command "{}") failed'
 
191
                        ' with exit code {}'
 
192
                        .format(self.properties["Name"], command,
 
193
                                os.WEXITSTATUS(condition)))
199
194
        elif os.WIFSIGNALED(condition):
200
 
            self.logger(u'Checker for client %s (command "%s")'
201
 
                        u' was killed by signal %s'
202
 
                        % (self.properties[u"Name"], command,
203
 
                           os.WTERMSIG(condition)))
204
 
        elif os.WCOREDUMP(condition):
205
 
            self.logger(u'Checker for client %s (command "%s")'
206
 
                        u' dumped core'
207
 
                        % (self.properties[u"Name"], command))
208
 
        else:
209
 
            self.logger(u'Checker for client %s completed'
210
 
                        u' mysteriously')
 
195
            self.logger('Checker for client {} (command "{}") was'
 
196
                        ' killed by signal {}'
 
197
                        .format(self.properties["Name"], command,
 
198
                                os.WTERMSIG(condition)))
211
199
        self.update()
212
 
    
 
200
 
213
201
    def checker_started(self, command):
214
 
        #self.logger(u'Client %s started checker "%s"'
215
 
        #            % (self.properties[u"Name"], unicode(command)))
216
 
        pass
217
 
    
 
202
        """Server signals that a checker started."""
 
203
        self.logger('Client {} started checker "{}"'
 
204
                    .format(self.properties["Name"],
 
205
                            command), level=0)
 
206
 
218
207
    def got_secret(self):
219
 
        self.last_checker_failed = False
220
 
        self.logger(u'Client %s received its secret'
221
 
                    % self.properties[u"Name"])
222
 
    
 
208
        self.logger('Client {} received its secret'
 
209
                    .format(self.properties["Name"]))
 
210
 
223
211
    def need_approval(self, timeout, default):
224
212
        if not default:
225
 
            message = u'Client %s needs approval within %s seconds'
 
213
            message = 'Client {} needs approval within {} seconds'
226
214
        else:
227
 
            message = u'Client %s will get its secret in %s seconds'
228
 
        self.logger(message
229
 
                    % (self.properties[u"Name"], timeout/1000))
230
 
        self.using_timer(True)
231
 
    
 
215
            message = 'Client {} will get its secret in {} seconds'
 
216
        self.logger(message.format(self.properties["Name"],
 
217
                                   timeout/1000))
 
218
 
232
219
    def rejected(self, reason):
233
 
        self.logger(u'Client %s was rejected; reason: %s'
234
 
                    % (self.properties[u"Name"], reason))
235
 
    
 
220
        self.logger('Client {} was rejected; reason: {}'
 
221
                    .format(self.properties["Name"], reason))
 
222
 
236
223
    def selectable(self):
237
224
        """Make this a "selectable" widget.
238
225
        This overrides the method from urwid.FlowWidget."""
239
226
        return True
240
 
    
241
 
    def rows(self, (maxcol,), focus=False):
 
227
 
 
228
    def rows(self, maxcolrow, focus=False):
242
229
        """How many rows this widget will occupy might depend on
243
230
        whether we have focus or not.
244
231
        This overrides the method from urwid.FlowWidget"""
245
 
        return self.current_widget(focus).rows((maxcol,), focus=focus)
246
 
    
 
232
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
 
233
 
247
234
    def current_widget(self, focus=False):
248
235
        if focus or self.opened:
249
236
            return self._focus_widget
250
237
        return self._widget
251
 
    
 
238
 
252
239
    def update(self):
253
240
        "Called when what is visible on the screen should be updated."
254
241
        # How to add standout mode to a style
255
 
        with_standout = { u"normal": u"standout",
256
 
                          u"bold": u"bold-standout",
257
 
                          u"underline-blink":
258
 
                              u"underline-blink-standout",
259
 
                          u"bold-underline-blink":
260
 
                              u"bold-underline-blink-standout",
261
 
                          }
 
242
        with_standout = {"normal": "standout",
 
243
                         "bold": "bold-standout",
 
244
                         "underline-blink":
 
245
                         "underline-blink-standout",
 
246
                         "bold-underline-blink":
 
247
                         "bold-underline-blink-standout",
 
248
                         }
262
249
 
263
250
        # Rebuild focus and non-focus widgets using current properties
264
251
 
265
252
        # Base part of a client. Name!
266
 
        base = (u'%(name)s: '
267
 
                      % {u"name": self.properties[u"Name"]})
268
 
        if not self.properties[u"Enabled"]:
269
 
            message = u"DISABLED"
270
 
        elif self.properties[u"ApprovalPending"]:
271
 
            timeout = datetime.timedelta(milliseconds
272
 
                                         = self.properties
273
 
                                         [u"ApprovalDelay"])
 
253
        base = '{name}: '.format(name=self.properties["Name"])
 
254
        if not self.properties["Enabled"]:
 
255
            message = "DISABLED"
 
256
            self.using_timer(False)
 
257
        elif self.properties["ApprovalPending"]:
 
258
            timeout = datetime.timedelta(
 
259
                milliseconds=self.properties["ApprovalDelay"])
274
260
            last_approval_request = isoformat_to_datetime(
275
 
                self.properties[u"LastApprovalRequest"])
 
261
                self.properties["LastApprovalRequest"])
276
262
            if last_approval_request is not None:
277
 
                timer = timeout - (datetime.datetime.utcnow()
278
 
                                   - last_approval_request)
 
263
                timer = max(timeout - (datetime.datetime.utcnow()
 
264
                                       - last_approval_request),
 
265
                            datetime.timedelta())
279
266
            else:
280
267
                timer = datetime.timedelta()
281
 
            if self.properties[u"ApprovedByDefault"]:
282
 
                message = u"Approval in %s. (d)eny?"
283
 
            else:
284
 
                message = u"Denial in %s. (a)pprove?"
285
 
            message = message % unicode(timer).rsplit(".", 1)[0]
286
 
        elif self.last_checker_failed:
287
 
            timeout = datetime.timedelta(milliseconds
288
 
                                         = self.properties
289
 
                                         [u"Timeout"])
290
 
            last_ok = isoformat_to_datetime(
291
 
                max((self.properties[u"LastCheckedOK"]
292
 
                     or self.properties[u"Created"]),
293
 
                    self.properties[u"LastEnabled"]))
294
 
            timer = timeout - (datetime.datetime.utcnow() - last_ok)
295
 
            message = (u'A checker has failed! Time until client'
296
 
                       u' gets disabled: %s'
297
 
                           % unicode(timer).rsplit(".", 1)[0])
 
268
            if self.properties["ApprovedByDefault"]:
 
269
                message = "Approval in {}. (d)eny?"
 
270
            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
 
276
            expires = self.properties["Expires"]
 
277
            if expires == "":
 
278
                timer = datetime.timedelta(0)
 
279
            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())
 
284
            message = ('A checker has failed! Time until client'
 
285
                       ' gets disabled: {}'
 
286
                       .format(str(timer).rsplit(".", 1)[0]))
 
287
            self.using_timer(True)
298
288
        else:
299
 
            message = u"enabled"
300
 
        self._text = "%s%s" % (base, message)
301
 
            
 
289
            message = "enabled"
 
290
            self.using_timer(False)
 
291
        self._text = "{}{}".format(base, message)
 
292
 
302
293
        if not urwid.supports_unicode():
303
294
            self._text = self._text.encode("ascii", "replace")
304
 
        textlist = [(u"normal", self._text)]
 
295
        textlist = [("normal", self._text)]
305
296
        self._text_widget.set_text(textlist)
306
297
        self._focus_text_widget.set_text([(with_standout[text[0]],
307
298
                                           text[1])
314
305
        # Run update hook, if any
315
306
        if self.update_hook is not None:
316
307
            self.update_hook()
317
 
    
 
308
 
318
309
    def update_timer(self):
319
 
        "called by gobject"
 
310
        """called by GLib. Will indefinitely loop until
 
311
        GLib.source_remove() on tag is called
 
312
        """
320
313
        self.update()
321
314
        return True             # Keep calling this
322
 
    
323
 
    def delete(self):
 
315
 
 
316
    def delete(self, **kwargs):
324
317
        if self._update_timer_callback_tag is not None:
325
 
            gobject.source_remove(self._update_timer_callback_tag)
 
318
            GLib.source_remove(self._update_timer_callback_tag)
326
319
            self._update_timer_callback_tag = None
 
320
        for match in self.match_objects:
 
321
            match.remove()
 
322
        self.match_objects = ()
327
323
        if self.delete_hook is not None:
328
324
            self.delete_hook(self)
329
 
    
330
 
    def render(self, (maxcol,), focus=False):
 
325
        return super(MandosClientWidget, self).delete(**kwargs)
 
326
 
 
327
    def render(self, maxcolrow, focus=False):
331
328
        """Render differently if we have focus.
332
329
        This overrides the method from urwid.FlowWidget"""
333
 
        return self.current_widget(focus).render((maxcol,),
 
330
        return self.current_widget(focus).render(maxcolrow,
334
331
                                                 focus=focus)
335
 
    
336
 
    def keypress(self, (maxcol,), key):
 
332
 
 
333
    def keypress(self, maxcolrow, key):
337
334
        """Handle keys.
338
335
        This overrides the method from urwid.FlowWidget"""
339
 
        if key == u"+":
340
 
            self.proxy.Enable(dbus_interface = client_interface)
341
 
        elif key == u"-":
342
 
            self.proxy.Disable(dbus_interface = client_interface)
343
 
        elif key == u"a":
 
336
        if key == "+":
 
337
            self.proxy.Set(client_interface, "Enabled",
 
338
                           dbus.Boolean(True), ignore_reply=True,
 
339
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
340
        elif key == "-":
 
341
            self.proxy.Set(client_interface, "Enabled", False,
 
342
                           ignore_reply=True,
 
343
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
344
        elif key == "a":
344
345
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
345
 
                               dbus_interface = client_interface)
346
 
        elif key == u"d":
 
346
                               dbus_interface=client_interface,
 
347
                               ignore_reply=True)
 
348
        elif key == "d":
347
349
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
348
 
                                  dbus_interface = client_interface)
349
 
        elif key == u"r" or key == u"_" or key == u"ctrl k":
 
350
                               dbus_interface=client_interface,
 
351
                               ignore_reply=True)
 
352
        elif key == "R" or key == "_" or key == "ctrl k":
350
353
            self.server_proxy_object.RemoveClient(self.proxy
351
 
                                                  .object_path)
352
 
        elif key == u"s":
353
 
            self.proxy.StartChecker(dbus_interface = client_interface)
354
 
        elif key == u"S":
355
 
            self.proxy.StopChecker(dbus_interface = client_interface)
356
 
        elif key == u"C":
357
 
            self.proxy.CheckedOK(dbus_interface = client_interface)
 
354
                                                  .object_path,
 
355
                                                  ignore_reply=True)
 
356
        elif key == "s":
 
357
            self.proxy.Set(client_interface, "CheckerRunning",
 
358
                           dbus.Boolean(True), ignore_reply=True,
 
359
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
360
        elif key == "S":
 
361
            self.proxy.Set(client_interface, "CheckerRunning",
 
362
                           dbus.Boolean(False), ignore_reply=True,
 
363
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
364
        elif key == "C":
 
365
            self.proxy.CheckedOK(dbus_interface=client_interface,
 
366
                                 ignore_reply=True)
358
367
        # xxx
359
 
#         elif key == u"p" or key == "=":
 
368
#         elif key == "p" or key == "=":
360
369
#             self.proxy.pause()
361
 
#         elif key == u"u" or key == ":":
 
370
#         elif key == "u" or key == ":":
362
371
#             self.proxy.unpause()
363
 
#         elif key == u"RET":
 
372
#         elif key == "RET":
364
373
#             self.open()
365
374
        else:
366
375
            return key
367
 
    
368
 
    def property_changed(self, property=None, value=None,
369
 
                         *args, **kwargs):
370
 
        """Call self.update() if old value is not new value.
 
376
 
 
377
    def properties_changed(self, interface, properties, invalidated):
 
378
        """Call self.update() if any properties changed.
371
379
        This overrides the method from MandosClientPropertyCache"""
372
 
        property_name = unicode(property)
373
 
        old_value = self.properties.get(property_name)
374
 
        super(MandosClientWidget, self).property_changed(
375
 
            property=property, value=value, *args, **kwargs)
376
 
        if self.properties.get(property_name) != old_value:
 
380
        old_values = {key: self.properties.get(key)
 
381
                      for key in properties.keys()}
 
382
        super(MandosClientWidget, self).properties_changed(
 
383
            interface, properties, invalidated)
 
384
        if any(old_values[key] != self.properties.get(key)
 
385
               for key in old_values):
377
386
            self.update()
378
387
 
379
388
 
382
391
    "down" key presses, thus not allowing any containing widgets to
383
392
    use them as an excuse to shift focus away from this widget.
384
393
    """
385
 
    def keypress(self, (maxcol, maxrow), key):
386
 
        ret = super(ConstrainedListBox, self).keypress((maxcol,
387
 
                                                        maxrow), key)
388
 
        if ret in (u"up", u"down"):
 
394
    def keypress(self, *args, **kwargs):
 
395
        ret = (super(ConstrainedListBox, self)
 
396
               .keypress(*args, **kwargs))
 
397
        if ret in ("up", "down"):
389
398
            return
390
399
        return ret
391
400
 
394
403
    """This is the entire user interface - the whole screen
395
404
    with boxes, lists of client widgets, etc.
396
405
    """
397
 
    def __init__(self, max_log_length=1000):
 
406
    def __init__(self, max_log_length=1000, log_level=1):
398
407
        DBusGMainLoop(set_as_default=True)
399
 
        
 
408
 
400
409
        self.screen = urwid.curses_display.Screen()
401
 
        
 
410
 
402
411
        self.screen.register_palette((
403
 
                (u"normal",
404
 
                 u"default", u"default", None),
405
 
                (u"bold",
406
 
                 u"default", u"default", u"bold"),
407
 
                (u"underline-blink",
408
 
                 u"default", u"default", u"underline"),
409
 
                (u"standout",
410
 
                 u"default", u"default", u"standout"),
411
 
                (u"bold-underline-blink",
412
 
                 u"default", u"default", (u"bold", u"underline")),
413
 
                (u"bold-standout",
414
 
                 u"default", u"default", (u"bold", u"standout")),
415
 
                (u"underline-blink-standout",
416
 
                 u"default", u"default", (u"underline", u"standout")),
417
 
                (u"bold-underline-blink-standout",
418
 
                 u"default", u"default", (u"bold", u"underline",
419
 
                                          u"standout")),
 
412
                ("normal",
 
413
                 "default", "default", None),
 
414
                ("bold",
 
415
                 "bold", "default", "bold"),
 
416
                ("underline-blink",
 
417
                 "underline,blink", "default", "underline,blink"),
 
418
                ("standout",
 
419
                 "standout", "default", "standout"),
 
420
                ("bold-underline-blink",
 
421
                 "bold,underline,blink", "default",
 
422
                 "bold,underline,blink"),
 
423
                ("bold-standout",
 
424
                 "bold,standout", "default", "bold,standout"),
 
425
                ("underline-blink-standout",
 
426
                 "underline,blink,standout", "default",
 
427
                 "underline,blink,standout"),
 
428
                ("bold-underline-blink-standout",
 
429
                 "bold,underline,blink,standout", "default",
 
430
                 "bold,underline,blink,standout"),
420
431
                ))
421
 
        
 
432
 
422
433
        if urwid.supports_unicode():
423
 
            self.divider = u"─" # \u2500
424
 
            #self.divider = u"━" # \u2501
 
434
            self.divider = "─"  # \u2500
425
435
        else:
426
 
            #self.divider = u"-" # \u002d
427
 
            self.divider = u"_" # \u005f
428
 
        
 
436
            self.divider = "_"  # \u005f
 
437
 
429
438
        self.screen.start()
430
 
        
 
439
 
431
440
        self.size = self.screen.get_cols_rows()
432
 
        
 
441
 
433
442
        self.clients = urwid.SimpleListWalker([])
434
443
        self.clients_dict = {}
435
 
        
 
444
 
436
445
        # We will add Text widgets to this list
437
446
        self.log = []
438
447
        self.max_log_length = max_log_length
439
 
        
 
448
 
 
449
        self.log_level = log_level
 
450
 
440
451
        # We keep a reference to the log widget so we can remove it
441
452
        # from the ListWalker without it getting destroyed
442
453
        self.logbox = ConstrainedListBox(self.log)
443
 
        
 
454
 
444
455
        # This keeps track of whether self.uilist currently has
445
456
        # self.logbox in it or not
446
457
        self.log_visible = True
447
 
        self.log_wrap = u"any"
448
 
        
 
458
        self.log_wrap = "any"
 
459
 
449
460
        self.rebuild()
450
 
        self.log_message_raw((u"bold",
451
 
                              u"Mandos Monitor version " + version))
452
 
        self.log_message_raw((u"bold",
453
 
                              u"q: Quit  ?: Help"))
454
 
        
 
461
        self.log_message_raw(("bold",
 
462
                              "Mandos Monitor version " + version))
 
463
        self.log_message_raw(("bold",
 
464
                              "q: Quit  ?: Help"))
 
465
 
455
466
        self.busname = domain + '.Mandos'
456
 
        self.main_loop = gobject.MainLoop()
457
 
        self.bus = dbus.SystemBus()
458
 
        mandos_dbus_objc = self.bus.get_object(
459
 
            self.busname, u"/", follow_name_owner_changes=True)
460
 
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
461
 
                                          dbus_interface
462
 
                                          = server_interface)
463
 
        try:
464
 
            mandos_clients = (self.mandos_serv
465
 
                              .GetAllClientsWithProperties())
466
 
        except dbus.exceptions.DBusException:
467
 
            mandos_clients = dbus.Dictionary()
468
 
        
469
 
        (self.mandos_serv
470
 
         .connect_to_signal(u"ClientRemoved",
471
 
                            self.find_and_remove_client,
472
 
                            dbus_interface=server_interface,
473
 
                            byte_arrays=True))
474
 
        (self.mandos_serv
475
 
         .connect_to_signal(u"ClientAdded",
476
 
                            self.add_new_client,
477
 
                            dbus_interface=server_interface,
478
 
                            byte_arrays=True))
479
 
        (self.mandos_serv
480
 
         .connect_to_signal(u"ClientNotFound",
481
 
                            self.client_not_found,
482
 
                            dbus_interface=server_interface,
483
 
                            byte_arrays=True))
484
 
        for path, client in mandos_clients.iteritems():
485
 
            client_proxy_object = self.bus.get_object(self.busname,
486
 
                                                      path)
487
 
            self.add_client(MandosClientWidget(server_proxy_object
488
 
                                               =self.mandos_serv,
489
 
                                               proxy_object
490
 
                                               =client_proxy_object,
491
 
                                               properties=client,
492
 
                                               update_hook
493
 
                                               =self.refresh,
494
 
                                               delete_hook
495
 
                                               =self.remove_client,
496
 
                                               logger
497
 
                                               =self.log_message),
498
 
                            path=path)
499
 
    
 
467
        self.main_loop = GLib.MainLoop()
 
468
 
500
469
    def client_not_found(self, fingerprint, address):
501
 
        self.log_message((u"Client with address %s and fingerprint %s"
502
 
                          u" could not be found" % (address,
503
 
                                                    fingerprint)))
504
 
    
 
470
        self.log_message("Client with address {} and fingerprint {}"
 
471
                         " could not be found"
 
472
                         .format(address, fingerprint))
 
473
 
505
474
    def rebuild(self):
506
475
        """This rebuilds the User Interface.
507
476
        Call this when the widget layout needs to change"""
508
477
        self.uilist = []
509
 
        #self.uilist.append(urwid.ListBox(self.clients))
 
478
        # self.uilist.append(urwid.ListBox(self.clients))
510
479
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
511
480
                                                          clients),
512
 
                                       #header=urwid.Divider(),
 
481
                                       # header=urwid.Divider(),
513
482
                                       header=None,
514
 
                                       footer=
515
 
                                       urwid.Divider(div_char=
516
 
                                                     self.divider)))
 
483
                                       footer=urwid.Divider(
 
484
                                           div_char=self.divider)))
517
485
        if self.log_visible:
518
486
            self.uilist.append(self.logbox)
519
 
            pass
520
487
        self.topwidget = urwid.Pile(self.uilist)
521
 
    
522
 
    def log_message(self, message):
 
488
 
 
489
    def log_message(self, message, level=1):
 
490
        """Log message formatted with timestamp"""
 
491
        if level < self.log_level:
 
492
            return
523
493
        timestamp = datetime.datetime.now().isoformat()
524
 
        self.log_message_raw(timestamp + u": " + message)
525
 
    
526
 
    def log_message_raw(self, markup):
 
494
        self.log_message_raw("{}: {}".format(timestamp, message),
 
495
                             level=level)
 
496
 
 
497
    def log_message_raw(self, markup, level=1):
527
498
        """Add a log message to the log buffer."""
 
499
        if level < self.log_level:
 
500
            return
528
501
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
529
 
        if (self.max_log_length
530
 
            and len(self.log) > self.max_log_length):
531
 
            del self.log[0:len(self.log)-self.max_log_length-1]
 
502
        if self.max_log_length:
 
503
            if len(self.log) > self.max_log_length:
 
504
                del self.log[0:len(self.log)-self.max_log_length-1]
532
505
        self.logbox.set_focus(len(self.logbox.body.contents),
533
 
                              coming_from=u"above")
 
506
                              coming_from="above")
534
507
        self.refresh()
535
 
    
 
508
 
536
509
    def toggle_log_display(self):
537
510
        """Toggle visibility of the log buffer."""
538
511
        self.log_visible = not self.log_visible
539
512
        self.rebuild()
540
 
        #self.log_message(u"Log visibility changed to: "
541
 
        #                 + unicode(self.log_visible))
542
 
    
 
513
        self.log_message("Log visibility changed to: {}"
 
514
                         .format(self.log_visible), level=0)
 
515
 
543
516
    def change_log_display(self):
544
517
        """Change type of log display.
545
518
        Currently, this toggles wrapping of text lines."""
546
 
        if self.log_wrap == u"clip":
547
 
            self.log_wrap = u"any"
 
519
        if self.log_wrap == "clip":
 
520
            self.log_wrap = "any"
548
521
        else:
549
 
            self.log_wrap = u"clip"
 
522
            self.log_wrap = "clip"
550
523
        for textwidget in self.log:
551
524
            textwidget.set_wrap_mode(self.log_wrap)
552
 
        #self.log_message(u"Wrap mode: " + self.log_wrap)
553
 
    
554
 
    def find_and_remove_client(self, path, name):
555
 
        """Find an client from its object path and remove it.
556
 
        
557
 
        This is connected to the ClientRemoved signal from the
 
525
        self.log_message("Wrap mode: {}".format(self.log_wrap),
 
526
                         level=0)
 
527
 
 
528
    def find_and_remove_client(self, path, interfaces):
 
529
        """Find a client by its object path and remove it.
 
530
 
 
531
        This is connected to the InterfacesRemoved signal from the
558
532
        Mandos server object."""
 
533
        if client_interface not in interfaces:
 
534
            # Not a Mandos client object; ignore
 
535
            return
559
536
        try:
560
537
            client = self.clients_dict[path]
561
538
        except KeyError:
562
539
            # not found?
563
 
            return
564
 
        self.remove_client(client, path)
565
 
    
566
 
    def add_new_client(self, path):
 
540
            self.log_message("Unknown client {!r} removed"
 
541
                             .format(path))
 
542
            return
 
543
        client.delete()
 
544
 
 
545
    def add_new_client(self, path, ifs_and_props):
 
546
        """Find a client by its object path and remove it.
 
547
 
 
548
        This is connected to the InterfacesAdded signal from the
 
549
        Mandos server object.
 
550
        """
 
551
        if client_interface not in ifs_and_props:
 
552
            # Not a Mandos client object; ignore
 
553
            return
567
554
        client_proxy_object = self.bus.get_object(self.busname, path)
568
 
        self.add_client(MandosClientWidget(server_proxy_object
569
 
                                           =self.mandos_serv,
570
 
                                           proxy_object
571
 
                                           =client_proxy_object,
572
 
                                           update_hook
573
 
                                           =self.refresh,
574
 
                                           delete_hook
575
 
                                           =self.remove_client,
576
 
                                           logger
577
 
                                           =self.log_message),
 
555
        self.add_client(MandosClientWidget(
 
556
            server_proxy_object=self.mandos_serv,
 
557
            proxy_object=client_proxy_object,
 
558
            update_hook=self.refresh,
 
559
            delete_hook=self.remove_client,
 
560
            logger=self.log_message,
 
561
            properties=dict(ifs_and_props[client_interface])),
578
562
                        path=path)
579
 
    
 
563
 
580
564
    def add_client(self, client, path=None):
581
565
        self.clients.append(client)
582
566
        if path is None:
583
567
            path = client.proxy.object_path
584
568
        self.clients_dict[path] = client
585
 
        self.clients.sort(None, lambda c: c.properties[u"Name"])
 
569
        self.clients.sort(key=lambda c: c.properties["Name"])
586
570
        self.refresh()
587
 
    
 
571
 
588
572
    def remove_client(self, client, path=None):
589
573
        self.clients.remove(client)
590
574
        if path is None:
591
575
            path = client.proxy.object_path
592
576
        del self.clients_dict[path]
593
 
        if not self.clients_dict:
594
 
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
595
 
            # is completely emptied, we need to recreate it.
596
 
            self.clients = urwid.SimpleListWalker([])
597
 
            self.rebuild()
598
577
        self.refresh()
599
 
    
 
578
 
600
579
    def refresh(self):
601
580
        """Redraw the screen"""
602
581
        canvas = self.topwidget.render(self.size, focus=True)
603
582
        self.screen.draw_screen(self.size, canvas)
604
 
    
 
583
 
605
584
    def run(self):
606
585
        """Start the main loop and exit when it's done."""
 
586
        self.bus = dbus.SystemBus()
 
587
        mandos_dbus_objc = self.bus.get_object(
 
588
            self.busname, "/", follow_name_owner_changes=True)
 
589
        self.mandos_serv = dbus.Interface(
 
590
            mandos_dbus_objc, dbus_interface=server_interface)
 
591
        try:
 
592
            mandos_clients = (self.mandos_serv
 
593
                              .GetAllClientsWithProperties())
 
594
            if not mandos_clients:
 
595
                self.log_message_raw(("bold",
 
596
                                      "Note: Server has no clients."))
 
597
        except dbus.exceptions.DBusException:
 
598
            self.log_message_raw(("bold",
 
599
                                  "Note: No Mandos server running."))
 
600
            mandos_clients = dbus.Dictionary()
 
601
 
 
602
        (self.mandos_serv
 
603
         .connect_to_signal("InterfacesRemoved",
 
604
                            self.find_and_remove_client,
 
605
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
 
606
                            byte_arrays=True))
 
607
        (self.mandos_serv
 
608
         .connect_to_signal("InterfacesAdded",
 
609
                            self.add_new_client,
 
610
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
 
611
                            byte_arrays=True))
 
612
        (self.mandos_serv
 
613
         .connect_to_signal("ClientNotFound",
 
614
                            self.client_not_found,
 
615
                            dbus_interface=server_interface,
 
616
                            byte_arrays=True))
 
617
        for path, client in mandos_clients.items():
 
618
            client_proxy_object = self.bus.get_object(self.busname,
 
619
                                                      path)
 
620
            self.add_client(MandosClientWidget(
 
621
                server_proxy_object=self.mandos_serv,
 
622
                proxy_object=client_proxy_object,
 
623
                properties=client,
 
624
                update_hook=self.refresh,
 
625
                delete_hook=self.remove_client,
 
626
                logger=self.log_message),
 
627
                            path=path)
 
628
 
607
629
        self.refresh()
608
 
        self._input_callback_tag = (gobject.io_add_watch
 
630
        self._input_callback_tag = (GLib.io_add_watch
609
631
                                    (sys.stdin.fileno(),
610
 
                                     gobject.IO_IN,
 
632
                                     GLib.IO_IN,
611
633
                                     self.process_input))
612
634
        self.main_loop.run()
613
635
        # Main loop has finished, we should close everything now
614
 
        gobject.source_remove(self._input_callback_tag)
 
636
        GLib.source_remove(self._input_callback_tag)
615
637
        self.screen.stop()
616
 
    
 
638
 
617
639
    def stop(self):
618
640
        self.main_loop.quit()
619
 
    
 
641
 
620
642
    def process_input(self, source, condition):
621
643
        keys = self.screen.get_input()
622
 
        translations = { u"ctrl n": u"down",      # Emacs
623
 
                         u"ctrl p": u"up",        # Emacs
624
 
                         u"ctrl v": u"page down", # Emacs
625
 
                         u"meta v": u"page up",   # Emacs
626
 
                         u" ": u"page down",      # less
627
 
                         u"f": u"page down",      # less
628
 
                         u"b": u"page up",        # less
629
 
                         u"j": u"down",           # vi
630
 
                         u"k": u"up",             # vi
631
 
                         }
 
644
        translations = {"ctrl n": "down",       # Emacs
 
645
                        "ctrl p": "up",         # Emacs
 
646
                        "ctrl v": "page down",  # Emacs
 
647
                        "meta v": "page up",    # Emacs
 
648
                        " ": "page down",       # less
 
649
                        "f": "page down",       # less
 
650
                        "b": "page up",         # less
 
651
                        "j": "down",            # vi
 
652
                        "k": "up",              # vi
 
653
                        }
632
654
        for key in keys:
633
655
            try:
634
656
                key = translations[key]
635
657
            except KeyError:    # :-)
636
658
                pass
637
 
            
638
 
            if key == u"q" or key == u"Q":
 
659
 
 
660
            if key == "q" or key == "Q":
639
661
                self.stop()
640
662
                break
641
 
            elif key == u"window resize":
 
663
            elif key == "window resize":
642
664
                self.size = self.screen.get_cols_rows()
643
665
                self.refresh()
644
 
            elif key == u"\f":  # Ctrl-L
 
666
            elif key == "ctrl l":
 
667
                self.screen.clear()
645
668
                self.refresh()
646
 
            elif key == u"l" or key == u"D":
 
669
            elif key == "l" or key == "D":
647
670
                self.toggle_log_display()
648
671
                self.refresh()
649
 
            elif key == u"w" or key == u"i":
 
672
            elif key == "w" or key == "i":
650
673
                self.change_log_display()
651
674
                self.refresh()
652
 
            elif key == u"?" or key == u"f1" or key == u"esc":
 
675
            elif key == "?" or key == "f1" or key == "esc":
653
676
                if not self.log_visible:
654
677
                    self.log_visible = True
655
678
                    self.rebuild()
656
 
                self.log_message_raw((u"bold",
657
 
                                      u"  ".
658
 
                                      join((u"q: Quit",
659
 
                                            u"?: Help",
660
 
                                            u"l: Log window toggle",
661
 
                                            u"TAB: Switch window",
662
 
                                            u"w: Wrap (log)"))))
663
 
                self.log_message_raw((u"bold",
664
 
                                      u"  "
665
 
                                      .join((u"Clients:",
666
 
                                             u"+: Enable",
667
 
                                             u"-: Disable",
668
 
                                             u"r: Remove",
669
 
                                             u"s: Start new checker",
670
 
                                             u"S: Stop checker",
671
 
                                             u"C: Checker OK",
672
 
                                             u"a: Approve",
673
 
                                             u"d: Deny"))))
 
679
                self.log_message_raw(("bold",
 
680
                                      "  ".
 
681
                                      join(("q: Quit",
 
682
                                            "?: Help",
 
683
                                            "l: Log window toggle",
 
684
                                            "TAB: Switch window",
 
685
                                            "w: Wrap (log lines)",
 
686
                                            "v: Toggle verbose log",
 
687
                                            ))))
 
688
                self.log_message_raw(("bold",
 
689
                                      "  "
 
690
                                      .join(("Clients:",
 
691
                                             "+: Enable",
 
692
                                             "-: Disable",
 
693
                                             "R: Remove",
 
694
                                             "s: Start new checker",
 
695
                                             "S: Stop checker",
 
696
                                             "C: Checker OK",
 
697
                                             "a: Approve",
 
698
                                             "d: Deny"))))
674
699
                self.refresh()
675
 
            elif key == u"tab":
 
700
            elif key == "tab":
676
701
                if self.topwidget.get_focus() is self.logbox:
677
702
                    self.topwidget.set_focus(0)
678
703
                else:
679
704
                    self.topwidget.set_focus(self.logbox)
680
705
                self.refresh()
681
 
            #elif (key == u"end" or key == u"meta >" or key == u"G"
682
 
            #      or key == u">"):
683
 
            #    pass            # xxx end-of-buffer
684
 
            #elif (key == u"home" or key == u"meta <" or key == u"g"
685
 
            #      or key == u"<"):
686
 
            #    pass            # xxx beginning-of-buffer
687
 
            #elif key == u"ctrl e" or key == u"$":
688
 
            #    pass            # xxx move-end-of-line
689
 
            #elif key == u"ctrl a" or key == u"^":
690
 
            #    pass            # xxx move-beginning-of-line
691
 
            #elif key == u"ctrl b" or key == u"meta (" or key == u"h":
692
 
            #    pass            # xxx left
693
 
            #elif key == u"ctrl f" or key == u"meta )" or key == u"l":
694
 
            #    pass            # xxx right
695
 
            #elif key == u"a":
696
 
            #    pass            # scroll up log
697
 
            #elif key == u"z":
698
 
            #    pass            # scroll down log
 
706
            elif key == "v":
 
707
                if self.log_level == 0:
 
708
                    self.log_level = 1
 
709
                    self.log_message("Verbose mode: Off")
 
710
                else:
 
711
                    self.log_level = 0
 
712
                    self.log_message("Verbose mode: On")
 
713
            # elif (key == "end" or key == "meta >" or key == "G"
 
714
            #       or key == ">"):
 
715
            #     pass            # xxx end-of-buffer
 
716
            # elif (key == "home" or key == "meta <" or key == "g"
 
717
            #       or key == "<"):
 
718
            #     pass            # xxx beginning-of-buffer
 
719
            # elif key == "ctrl e" or key == "$":
 
720
            #     pass            # xxx move-end-of-line
 
721
            # elif key == "ctrl a" or key == "^":
 
722
            #     pass            # xxx move-beginning-of-line
 
723
            # elif key == "ctrl b" or key == "meta (" or key == "h":
 
724
            #     pass            # xxx left
 
725
            # elif key == "ctrl f" or key == "meta )" or key == "l":
 
726
            #     pass            # xxx right
 
727
            # elif key == "a":
 
728
            #     pass            # scroll up log
 
729
            # elif key == "z":
 
730
            #     pass            # scroll down log
699
731
            elif self.topwidget.selectable():
700
732
                self.topwidget.keypress(self.size, key)
701
733
                self.refresh()
702
734
        return True
703
735
 
 
736
 
704
737
ui = UserInterface()
705
738
try:
706
739
    ui.run()
707
740
except KeyboardInterrupt:
708
741
    ui.screen.stop()
709
 
except Exception, e:
710
 
    ui.log_message(unicode(e))
 
742
except Exception as e:
 
743
    ui.log_message(str(e))
711
744
    ui.screen.stop()
712
745
    raise