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  • Committer: Teddy Hogeborn
  • Date: 2010-09-12 03:00:40 UTC
  • Revision ID: teddy@fukt.bsnet.se-20100912030040-b0uopyennste9fdh
Documentation changes:

* DBUS-API: New file documenting the server D-Bus interface.

* clients.conf: Add examples of new approval settings.

* debian/mandos.docs: Added "DBUS-API".

* mandos-clients.conf.xml (OPTIONS): Added "approved_by_default",
                                     "approval_delay", and
                                     "approval_duration".
* mandos.xml (D-BUS INTERFACE): Refer to the "DBUS-API" file.
  (BUGS): Remove mention of lack of a remote query interface.

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1
 
#!/usr/bin/python3 -bb
 
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
 
#
4
 
# Mandos Monitor - Control and monitor the Mandos server
5
 
#
6
 
# Copyright © 2009-2019 Teddy Hogeborn
7
 
# Copyright © 2009-2019 Björn Påhlsson
8
 
#
9
 
# This file is part of Mandos.
10
 
#
11
 
# Mandos is free software: you can redistribute it and/or modify it
12
 
# under the terms of the GNU General Public License as published by
13
 
# the Free Software Foundation, either version 3 of the License, or
14
 
# (at your option) any later version.
15
 
#
16
 
#     Mandos is distributed in the hope that it will be useful, but
17
 
#     WITHOUT ANY WARRANTY; without even the implied warranty of
18
 
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19
 
#     GNU General Public License for more details.
20
 
#
21
 
# You should have received a copy of the GNU General Public License
22
 
# along with Mandos.  If not, see <http://www.gnu.org/licenses/>.
23
 
#
24
 
# Contact the authors at <mandos@recompile.se>.
25
 
#
26
3
 
27
 
from __future__ import (division, absolute_import, print_function,
28
 
                        unicode_literals)
29
 
try:
30
 
    from future_builtins import *
31
 
except ImportError:
32
 
    pass
 
4
from __future__ import division, absolute_import, with_statement
33
5
 
34
6
import sys
35
7
import os
36
 
import warnings
 
8
import signal
 
9
 
37
10
import datetime
38
11
 
39
12
import urwid.curses_display
40
13
import urwid
41
14
 
42
15
from dbus.mainloop.glib import DBusGMainLoop
43
 
from gi.repository import GLib
 
16
import gobject
44
17
 
45
18
import dbus
46
19
 
 
20
import UserList
 
21
 
47
22
import locale
48
23
 
 
24
locale.setlocale(locale.LC_ALL, u'')
 
25
 
49
26
import logging
50
 
 
51
 
if sys.version_info.major == 2:
52
 
    str = unicode
53
 
 
54
 
log = logging.getLogger(os.path.basename(sys.argv[0]))
55
 
logging.basicConfig(level="NOTSET", # Show all messages
56
 
                    format="%(message)s") # Show basic log messages
57
 
 
58
 
logging.captureWarnings(True)   # Show warnings via the logging system
59
 
 
60
 
locale.setlocale(locale.LC_ALL, '')
61
 
 
62
27
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
63
28
 
64
29
# Some useful constants
65
 
domain = 'se.recompile'
 
30
domain = 'se.bsnet.fukt'
66
31
server_interface = domain + '.Mandos'
67
32
client_interface = domain + '.Mandos.Client'
68
 
version = "1.8.9"
69
 
 
70
 
try:
71
 
    dbus.OBJECT_MANAGER_IFACE
72
 
except AttributeError:
73
 
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
74
 
 
 
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)
75
42
 
76
43
def isoformat_to_datetime(iso):
77
44
    "Parse an ISO 8601 date string to a datetime.datetime()"
78
45
    if not iso:
79
46
        return None
80
 
    d, t = iso.split("T", 1)
81
 
    year, month, day = d.split("-", 2)
82
 
    hour, minute, second = t.split(":", 2)
 
47
    d, t = iso.split(u"T", 1)
 
48
    year, month, day = d.split(u"-", 2)
 
49
    hour, minute, second = t.split(u":", 2)
83
50
    second, fraction = divmod(float(second), 1)
84
51
    return datetime.datetime(int(year),
85
52
                             int(month),
86
53
                             int(day),
87
54
                             int(hour),
88
55
                             int(minute),
89
 
                             int(second),            # Whole seconds
90
 
                             int(fraction*1000000))  # Microseconds
91
 
 
 
56
                             int(second),           # Whole seconds
 
57
                             int(fraction*1000000)) # Microseconds
92
58
 
93
59
class MandosClientPropertyCache(object):
94
60
    """This wraps a Mandos Client D-Bus proxy object, caches the
95
61
    properties and calls a hook function when any of them are
96
62
    changed.
97
63
    """
98
 
    def __init__(self, proxy_object=None, properties=None, **kwargs):
99
 
        self.proxy = proxy_object  # Mandos Client proxy object
100
 
        self.properties = dict() if properties is None else properties
101
 
        self.property_changed_match = (
102
 
            self.proxy.connect_to_signal("PropertiesChanged",
103
 
                                         self.properties_changed,
104
 
                                         dbus.PROPERTIES_IFACE,
105
 
                                         byte_arrays=True))
106
 
 
107
 
        if properties is None:
108
 
            self.properties.update(self.proxy.GetAll(
109
 
                client_interface,
110
 
                dbus_interface=dbus.PROPERTIES_IFACE))
111
 
 
112
 
        super(MandosClientPropertyCache, self).__init__(**kwargs)
113
 
 
114
 
    def properties_changed(self, interface, properties, invalidated):
115
 
        """This is called whenever we get a PropertiesChanged signal
116
 
        It updates the changed properties in the "properties" dict.
 
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.
117
84
        """
118
85
        # Update properties dict with new value
119
 
        if interface == client_interface:
120
 
            self.properties.update(properties)
121
 
 
122
 
    def delete(self):
123
 
        self.property_changed_match.remove()
 
86
        self.properties[property] = value
124
87
 
125
88
 
126
89
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
127
90
    """A Mandos Client which is visible on the screen.
128
91
    """
129
 
 
 
92
    
130
93
    def __init__(self, server_proxy_object=None, update_hook=None,
131
 
                 delete_hook=None, **kwargs):
 
94
                 delete_hook=None, logger=None, *args, **kwargs):
132
95
        # Called on update
133
96
        self.update_hook = update_hook
134
97
        # Called on delete
135
98
        self.delete_hook = delete_hook
136
99
        # Mandos Server proxy object
137
100
        self.server_proxy_object = server_proxy_object
138
 
 
 
101
        # Logger
 
102
        self.logger = logger
 
103
        
139
104
        self._update_timer_callback_tag = None
140
 
 
 
105
        self.last_checker_failed = False
 
106
        
141
107
        # The widget shown normally
142
 
        self._text_widget = urwid.Text("")
 
108
        self._text_widget = urwid.Text(u"")
143
109
        # The widget shown when we have focus
144
 
        self._focus_text_widget = urwid.Text("")
145
 
        super(MandosClientWidget, self).__init__(**kwargs)
 
110
        self._focus_text_widget = urwid.Text(u"")
 
111
        super(MandosClientWidget, self).__init__(
 
112
            update_hook=update_hook, delete_hook=delete_hook,
 
113
            *args, **kwargs)
146
114
        self.update()
147
115
        self.opened = False
148
 
 
149
 
        self.match_objects = (
150
 
            self.proxy.connect_to_signal("CheckerCompleted",
151
 
                                         self.checker_completed,
152
 
                                         client_interface,
153
 
                                         byte_arrays=True),
154
 
            self.proxy.connect_to_signal("CheckerStarted",
155
 
                                         self.checker_started,
156
 
                                         client_interface,
157
 
                                         byte_arrays=True),
158
 
            self.proxy.connect_to_signal("GotSecret",
159
 
                                         self.got_secret,
160
 
                                         client_interface,
161
 
                                         byte_arrays=True),
162
 
            self.proxy.connect_to_signal("NeedApproval",
163
 
                                         self.need_approval,
164
 
                                         client_interface,
165
 
                                         byte_arrays=True),
166
 
            self.proxy.connect_to_signal("Rejected",
167
 
                                         self.rejected,
168
 
                                         client_interface,
169
 
                                         byte_arrays=True))
170
 
        log.debug('Created client %s', self.properties["Name"])
171
 
 
172
 
    def using_timer(self, flag):
173
 
        """Call this method with True or False when timer should be
174
 
        activated or deactivated.
175
 
        """
176
 
        if flag and self._update_timer_callback_tag is None:
177
 
            # Will update the shown timer value every second
178
 
            self._update_timer_callback_tag = (
179
 
                GLib.timeout_add(1000,
180
 
                                 glib_safely(self.update_timer)))
181
 
        elif not (flag or self._update_timer_callback_tag is None):
182
 
            GLib.source_remove(self._update_timer_callback_tag)
183
 
            self._update_timer_callback_tag = None
184
 
 
 
116
        self.proxy.connect_to_signal(u"CheckerCompleted",
 
117
                                     self.checker_completed,
 
118
                                     client_interface,
 
119
                                     byte_arrays=True)
 
120
        self.proxy.connect_to_signal(u"CheckerStarted",
 
121
                                     self.checker_started,
 
122
                                     client_interface,
 
123
                                     byte_arrays=True)
 
124
        self.proxy.connect_to_signal(u"GotSecret",
 
125
                                     self.got_secret,
 
126
                                     client_interface,
 
127
                                     byte_arrays=True)
 
128
        self.proxy.connect_to_signal(u"NeedApproval",
 
129
                                     self.need_approval,
 
130
                                     client_interface,
 
131
                                     byte_arrays=True)
 
132
        self.proxy.connect_to_signal(u"Rejected",
 
133
                                     self.rejected,
 
134
                                     client_interface,
 
135
                                     byte_arrays=True)
 
136
        last_checked_ok = isoformat_to_datetime(self.properties
 
137
                                                [u"LastCheckedOK"])
 
138
        if last_checked_ok is None:
 
139
            self.last_checker_failed = True
 
140
        else:
 
141
            self.last_checker_failed = ((datetime.datetime.utcnow()
 
142
                                         - last_checked_ok)
 
143
                                        > datetime.timedelta
 
144
                                        (milliseconds=
 
145
                                         self.properties
 
146
                                         [u"Interval"]))
 
147
        if self.last_checker_failed:
 
148
            self._update_timer_callback_tag = (gobject.timeout_add
 
149
                                               (1000,
 
150
                                                self.update_timer))
 
151
    
185
152
    def checker_completed(self, exitstatus, condition, command):
186
153
        if exitstatus == 0:
187
 
            log.debug('Checker for client %s (command "%s")'
188
 
                      ' succeeded', self.properties["Name"], command)
 
154
            if self.last_checker_failed:
 
155
                self.last_checker_failed = False
 
156
                gobject.source_remove(self._update_timer_callback_tag)
 
157
                self._update_timer_callback_tag = None
 
158
            self.logger(u'Checker for client %s (command "%s")'
 
159
                        u' was successful'
 
160
                        % (self.properties[u"Name"], command))
189
161
            self.update()
190
162
            return
191
163
        # Checker failed
 
164
        if not self.last_checker_failed:
 
165
            self.last_checker_failed = True
 
166
            self._update_timer_callback_tag = (gobject.timeout_add
 
167
                                               (1000,
 
168
                                                self.update_timer))
192
169
        if os.WIFEXITED(condition):
193
 
            log.info('Checker for client %s (command "%s") failed'
194
 
                     ' with exit code %d', self.properties["Name"],
195
 
                     command, os.WEXITSTATUS(condition))
 
170
            self.logger(u'Checker for client %s (command "%s")'
 
171
                        u' failed with exit code %s'
 
172
                        % (self.properties[u"Name"], command,
 
173
                           os.WEXITSTATUS(condition)))
196
174
        elif os.WIFSIGNALED(condition):
197
 
            log.info('Checker for client %s (command "%s") was'
198
 
                     ' killed by signal %d', self.properties["Name"],
199
 
                     command, os.WTERMSIG(condition))
 
175
            self.logger(u'Checker for client %s (command "%s")'
 
176
                        u' was killed by signal %s'
 
177
                        % (self.properties[u"Name"], command,
 
178
                           os.WTERMSIG(condition)))
 
179
        elif os.WCOREDUMP(condition):
 
180
            self.logger(u'Checker for client %s (command "%s")'
 
181
                        u' dumped core'
 
182
                        % (self.properties[u"Name"], command))
 
183
        else:
 
184
            self.logger(u'Checker for client %s completed'
 
185
                        u' mysteriously')
200
186
        self.update()
201
 
 
 
187
    
202
188
    def checker_started(self, command):
203
 
        """Server signals that a checker started."""
204
 
        log.debug('Client %s started checker "%s"',
205
 
                  self.properties["Name"], command)
206
 
 
 
189
        #self.logger(u'Client %s started checker "%s"'
 
190
        #            % (self.properties[u"Name"], unicode(command)))
 
191
        pass
 
192
    
207
193
    def got_secret(self):
208
 
        log.info("Client %s received its secret",
209
 
                 self.properties["Name"])
210
 
 
 
194
        self.last_checker_failed = False
 
195
        self.logger(u'Client %s received its secret'
 
196
                    % self.properties[u"Name"])
 
197
    
211
198
    def need_approval(self, timeout, default):
212
199
        if not default:
213
 
            message = "Client %s needs approval within %f seconds"
 
200
            message = u'Client %s needs approval within %s seconds'
214
201
        else:
215
 
            message = "Client %s will get its secret in %f seconds"
216
 
        log.info(message, self.properties["Name"], timeout/1000)
217
 
 
 
202
            message = u'Client %s will get its secret in %s seconds'
 
203
        self.logger(message
 
204
                    % (self.properties[u"Name"], timeout/1000))
 
205
    
218
206
    def rejected(self, reason):
219
 
        log.info("Client %s was rejected; reason: %s",
220
 
                 self.properties["Name"], reason)
221
 
 
 
207
        self.logger(u'Client %s was rejected; reason: %s'
 
208
                    % (self.properties[u"Name"], reason))
 
209
    
222
210
    def selectable(self):
223
211
        """Make this a "selectable" widget.
224
212
        This overrides the method from urwid.FlowWidget."""
225
213
        return True
226
 
 
227
 
    def rows(self, maxcolrow, focus=False):
 
214
    
 
215
    def rows(self, (maxcol,), focus=False):
228
216
        """How many rows this widget will occupy might depend on
229
217
        whether we have focus or not.
230
218
        This overrides the method from urwid.FlowWidget"""
231
 
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
232
 
 
 
219
        return self.current_widget(focus).rows((maxcol,), focus=focus)
 
220
    
233
221
    def current_widget(self, focus=False):
234
222
        if focus or self.opened:
235
223
            return self._focus_widget
236
224
        return self._widget
237
 
 
 
225
    
238
226
    def update(self):
239
227
        "Called when what is visible on the screen should be updated."
240
228
        # How to add standout mode to a style
241
 
        with_standout = {"normal": "standout",
242
 
                         "bold": "bold-standout",
243
 
                         "underline-blink":
244
 
                         "underline-blink-standout",
245
 
                         "bold-underline-blink":
246
 
                         "bold-underline-blink-standout",
247
 
                         }
 
229
        with_standout = { u"normal": u"standout",
 
230
                          u"bold": u"bold-standout",
 
231
                          u"underline-blink":
 
232
                              u"underline-blink-standout",
 
233
                          u"bold-underline-blink":
 
234
                              u"bold-underline-blink-standout",
 
235
                          }
248
236
 
249
237
        # Rebuild focus and non-focus widgets using current properties
250
238
 
251
239
        # Base part of a client. Name!
252
 
        base = '{name}: '.format(name=self.properties["Name"])
253
 
        if not self.properties["Enabled"]:
254
 
            message = "DISABLED"
255
 
            self.using_timer(False)
256
 
        elif self.properties["ApprovalPending"]:
257
 
            timeout = datetime.timedelta(
258
 
                milliseconds=self.properties["ApprovalDelay"])
259
 
            last_approval_request = isoformat_to_datetime(
260
 
                self.properties["LastApprovalRequest"])
261
 
            if last_approval_request is not None:
262
 
                timer = max(timeout - (datetime.datetime.utcnow()
263
 
                                       - last_approval_request),
264
 
                            datetime.timedelta())
265
 
            else:
266
 
                timer = datetime.timedelta()
267
 
            if self.properties["ApprovedByDefault"]:
268
 
                message = "Approval in {}. (d)eny?"
269
 
            else:
270
 
                message = "Denial in {}. (a)pprove?"
271
 
            message = message.format(str(timer).rsplit(".", 1)[0])
272
 
            self.using_timer(True)
273
 
        elif self.properties["LastCheckerStatus"] != 0:
274
 
            # When checker has failed, show timer until client expires
275
 
            expires = self.properties["Expires"]
276
 
            if expires == "":
277
 
                timer = datetime.timedelta(0)
278
 
            else:
279
 
                expires = (datetime.datetime.strptime
280
 
                           (expires, '%Y-%m-%dT%H:%M:%S.%f'))
281
 
                timer = max(expires - datetime.datetime.utcnow(),
282
 
                            datetime.timedelta())
283
 
            message = ('A checker has failed! Time until client'
284
 
                       ' gets disabled: {}'
285
 
                       .format(str(timer).rsplit(".", 1)[0]))
286
 
            self.using_timer(True)
 
240
        base = (u'%(name)s: '
 
241
                      % {u"name": self.properties[u"Name"]})
 
242
        if not self.properties[u"Enabled"]:
 
243
            message = u"DISABLED"
 
244
        elif self.properties[u"ApprovalPending"]:
 
245
            if self.properties[u"ApprovedByDefault"]:
 
246
                message = u"Connection established to client. (d)eny?"
 
247
            else:
 
248
                message = u"Seeks approval to send secret. (a)pprove?"
 
249
        elif self.last_checker_failed:
 
250
            timeout = datetime.timedelta(milliseconds
 
251
                                         = self.properties
 
252
                                         [u"Timeout"])
 
253
            last_ok = isoformat_to_datetime(
 
254
                max((self.properties[u"LastCheckedOK"]
 
255
                     or self.properties[u"Created"]),
 
256
                    self.properties[u"LastEnabled"]))
 
257
            timer = timeout - (datetime.datetime.utcnow() - last_ok)
 
258
            message = (u'A checker has failed! Time until client'
 
259
                       u' gets diabled: %s'
 
260
                           % unicode(timer).rsplit(".", 1)[0])
287
261
        else:
288
 
            message = "enabled"
289
 
            self.using_timer(False)
290
 
        self._text = "{}{}".format(base, message)
291
 
 
 
262
            message = u"enabled"
 
263
        self._text = "%s%s" % (base, message)
 
264
            
292
265
        if not urwid.supports_unicode():
293
266
            self._text = self._text.encode("ascii", "replace")
294
 
        textlist = [("normal", self._text)]
 
267
        textlist = [(u"normal", self._text)]
295
268
        self._text_widget.set_text(textlist)
296
269
        self._focus_text_widget.set_text([(with_standout[text[0]],
297
270
                                           text[1])
304
277
        # Run update hook, if any
305
278
        if self.update_hook is not None:
306
279
            self.update_hook()
307
 
 
 
280
    
308
281
    def update_timer(self):
309
 
        """called by GLib. Will indefinitely loop until
310
 
        GLib.source_remove() on tag is called
311
 
        """
 
282
        "called by gobject"
312
283
        self.update()
313
284
        return True             # Keep calling this
314
 
 
315
 
    def delete(self, **kwargs):
 
285
    
 
286
    def delete(self):
316
287
        if self._update_timer_callback_tag is not None:
317
 
            GLib.source_remove(self._update_timer_callback_tag)
 
288
            gobject.source_remove(self._update_timer_callback_tag)
318
289
            self._update_timer_callback_tag = None
319
 
        for match in self.match_objects:
320
 
            match.remove()
321
 
        self.match_objects = ()
322
290
        if self.delete_hook is not None:
323
291
            self.delete_hook(self)
324
 
        return super(MandosClientWidget, self).delete(**kwargs)
325
 
 
326
 
    def render(self, maxcolrow, focus=False):
 
292
    
 
293
    def render(self, (maxcol,), focus=False):
327
294
        """Render differently if we have focus.
328
295
        This overrides the method from urwid.FlowWidget"""
329
 
        return self.current_widget(focus).render(maxcolrow,
 
296
        return self.current_widget(focus).render((maxcol,),
330
297
                                                 focus=focus)
331
 
 
332
 
    def keypress(self, maxcolrow, key):
 
298
    
 
299
    def keypress(self, (maxcol,), key):
333
300
        """Handle keys.
334
301
        This overrides the method from urwid.FlowWidget"""
335
 
        if key == "+":
336
 
            self.proxy.Set(client_interface, "Enabled",
337
 
                           dbus.Boolean(True), ignore_reply=True,
338
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
339
 
        elif key == "-":
340
 
            self.proxy.Set(client_interface, "Enabled", False,
341
 
                           ignore_reply=True,
342
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
343
 
        elif key == "a":
 
302
        if key == u"+":
 
303
            self.proxy.Enable(dbus_interface = client_interface)
 
304
        elif key == u"-":
 
305
            self.proxy.Disable(dbus_interface = client_interface)
 
306
        elif key == u"a":
344
307
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
345
 
                               dbus_interface=client_interface,
346
 
                               ignore_reply=True)
347
 
        elif key == "d":
 
308
                               dbus_interface = client_interface)
 
309
        elif key == u"d":
348
310
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
349
 
                               dbus_interface=client_interface,
350
 
                               ignore_reply=True)
351
 
        elif key == "R" or key == "_" or key == "ctrl k":
 
311
                                  dbus_interface = client_interface)
 
312
        elif key == u"r" or key == u"_" or key == u"ctrl k":
352
313
            self.server_proxy_object.RemoveClient(self.proxy
353
 
                                                  .object_path,
354
 
                                                  ignore_reply=True)
355
 
        elif key == "s":
356
 
            self.proxy.Set(client_interface, "CheckerRunning",
357
 
                           dbus.Boolean(True), ignore_reply=True,
358
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
359
 
        elif key == "S":
360
 
            self.proxy.Set(client_interface, "CheckerRunning",
361
 
                           dbus.Boolean(False), ignore_reply=True,
362
 
                           dbus_interface=dbus.PROPERTIES_IFACE)
363
 
        elif key == "C":
364
 
            self.proxy.CheckedOK(dbus_interface=client_interface,
365
 
                                 ignore_reply=True)
 
314
                                                  .object_path)
 
315
        elif key == u"s":
 
316
            self.proxy.StartChecker(dbus_interface = client_interface)
 
317
        elif key == u"S":
 
318
            self.proxy.StopChecker(dbus_interface = client_interface)
 
319
        elif key == u"C":
 
320
            self.proxy.CheckedOK(dbus_interface = client_interface)
366
321
        # xxx
367
 
#         elif key == "p" or key == "=":
 
322
#         elif key == u"p" or key == "=":
368
323
#             self.proxy.pause()
369
 
#         elif key == "u" or key == ":":
 
324
#         elif key == u"u" or key == ":":
370
325
#             self.proxy.unpause()
371
 
#         elif key == "RET":
 
326
#         elif key == u"RET":
372
327
#             self.open()
 
328
#        elif key == u"+":
 
329
#            self.proxy.Approve(True)
 
330
#        elif key == u"-":
 
331
#            self.proxy.Approve(False)
373
332
        else:
374
333
            return key
375
 
 
376
 
    def properties_changed(self, interface, properties, invalidated):
377
 
        """Call self.update() if any properties changed.
 
334
    
 
335
    def property_changed(self, property=None, value=None,
 
336
                         *args, **kwargs):
 
337
        """Call self.update() if old value is not new value.
378
338
        This overrides the method from MandosClientPropertyCache"""
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):
 
339
        property_name = unicode(property)
 
340
        old_value = self.properties.get(property_name)
 
341
        super(MandosClientWidget, self).property_changed(
 
342
            property=property, value=value, *args, **kwargs)
 
343
        if self.properties.get(property_name) != old_value:
385
344
            self.update()
386
345
 
387
346
 
388
 
def glib_safely(func, retval=True):
389
 
    def safe_func(*args, **kwargs):
390
 
        try:
391
 
            return func(*args, **kwargs)
392
 
        except Exception:
393
 
            log.exception("")
394
 
            return retval
395
 
    return safe_func
396
 
 
397
 
 
398
347
class ConstrainedListBox(urwid.ListBox):
399
348
    """Like a normal urwid.ListBox, but will consume all "up" or
400
349
    "down" key presses, thus not allowing any containing widgets to
401
350
    use them as an excuse to shift focus away from this widget.
402
351
    """
403
 
    def keypress(self, *args, **kwargs):
404
 
        ret = (super(ConstrainedListBox, self)
405
 
               .keypress(*args, **kwargs))
406
 
        if ret in ("up", "down"):
 
352
    def keypress(self, (maxcol, maxrow), key):
 
353
        ret = super(ConstrainedListBox, self).keypress((maxcol,
 
354
                                                        maxrow), key)
 
355
        if ret in (u"up", u"down"):
407
356
            return
408
357
        return ret
409
358
 
414
363
    """
415
364
    def __init__(self, max_log_length=1000):
416
365
        DBusGMainLoop(set_as_default=True)
417
 
 
 
366
        
418
367
        self.screen = urwid.curses_display.Screen()
419
 
 
 
368
        
420
369
        self.screen.register_palette((
421
 
                ("normal",
422
 
                 "default", "default", None),
423
 
                ("bold",
424
 
                 "bold", "default", "bold"),
425
 
                ("underline-blink",
426
 
                 "underline,blink", "default", "underline,blink"),
427
 
                ("standout",
428
 
                 "standout", "default", "standout"),
429
 
                ("bold-underline-blink",
430
 
                 "bold,underline,blink", "default",
431
 
                 "bold,underline,blink"),
432
 
                ("bold-standout",
433
 
                 "bold,standout", "default", "bold,standout"),
434
 
                ("underline-blink-standout",
435
 
                 "underline,blink,standout", "default",
436
 
                 "underline,blink,standout"),
437
 
                ("bold-underline-blink-standout",
438
 
                 "bold,underline,blink,standout", "default",
439
 
                 "bold,underline,blink,standout"),
 
370
                (u"normal",
 
371
                 u"default", u"default", None),
 
372
                (u"bold",
 
373
                 u"default", u"default", u"bold"),
 
374
                (u"underline-blink",
 
375
                 u"default", u"default", u"underline"),
 
376
                (u"standout",
 
377
                 u"default", u"default", u"standout"),
 
378
                (u"bold-underline-blink",
 
379
                 u"default", u"default", (u"bold", u"underline")),
 
380
                (u"bold-standout",
 
381
                 u"default", u"default", (u"bold", u"standout")),
 
382
                (u"underline-blink-standout",
 
383
                 u"default", u"default", (u"underline", u"standout")),
 
384
                (u"bold-underline-blink-standout",
 
385
                 u"default", u"default", (u"bold", u"underline",
 
386
                                          u"standout")),
440
387
                ))
441
 
 
 
388
        
442
389
        if urwid.supports_unicode():
443
 
            self.divider = "─"  # \u2500
 
390
            self.divider = u"─" # \u2500
 
391
            #self.divider = u"━" # \u2501
444
392
        else:
445
 
            self.divider = "_"  # \u005f
446
 
 
 
393
            #self.divider = u"-" # \u002d
 
394
            self.divider = u"_" # \u005f
 
395
        
447
396
        self.screen.start()
448
 
 
 
397
        
449
398
        self.size = self.screen.get_cols_rows()
450
 
 
 
399
        
451
400
        self.clients = urwid.SimpleListWalker([])
452
401
        self.clients_dict = {}
453
 
 
 
402
        
454
403
        # We will add Text widgets to this list
455
 
        self.log = urwid.SimpleListWalker([])
 
404
        self.log = []
456
405
        self.max_log_length = max_log_length
457
 
 
 
406
        
458
407
        # We keep a reference to the log widget so we can remove it
459
408
        # from the ListWalker without it getting destroyed
460
409
        self.logbox = ConstrainedListBox(self.log)
461
 
 
 
410
        
462
411
        # This keeps track of whether self.uilist currently has
463
412
        # self.logbox in it or not
464
413
        self.log_visible = True
465
 
        self.log_wrap = "any"
466
 
 
467
 
        self.loghandler = UILogHandler(self)
468
 
 
 
414
        self.log_wrap = u"any"
 
415
        
469
416
        self.rebuild()
470
 
        self.add_log_line(("bold",
471
 
                           "Mandos Monitor version " + version))
472
 
        self.add_log_line(("bold", "q: Quit  ?: Help"))
473
 
 
 
417
        self.log_message_raw((u"bold",
 
418
                              u"Mandos Monitor version " + version))
 
419
        self.log_message_raw((u"bold",
 
420
                              u"q: Quit  ?: Help"))
 
421
        
474
422
        self.busname = domain + '.Mandos'
475
 
        self.main_loop = GLib.MainLoop()
476
 
 
477
 
    def client_not_found(self, key_id, address):
478
 
        log.info("Client with address %s and key ID %s could"
479
 
                 " not be found", address, key_id)
480
 
 
 
423
        self.main_loop = gobject.MainLoop()
 
424
        self.bus = dbus.SystemBus()
 
425
        mandos_dbus_objc = self.bus.get_object(
 
426
            self.busname, u"/", follow_name_owner_changes=True)
 
427
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
 
428
                                          dbus_interface
 
429
                                          = server_interface)
 
430
        try:
 
431
            mandos_clients = (self.mandos_serv
 
432
                              .GetAllClientsWithProperties())
 
433
        except dbus.exceptions.DBusException:
 
434
            mandos_clients = dbus.Dictionary()
 
435
        
 
436
        (self.mandos_serv
 
437
         .connect_to_signal(u"ClientRemoved",
 
438
                            self.find_and_remove_client,
 
439
                            dbus_interface=server_interface,
 
440
                            byte_arrays=True))
 
441
        (self.mandos_serv
 
442
         .connect_to_signal(u"ClientAdded",
 
443
                            self.add_new_client,
 
444
                            dbus_interface=server_interface,
 
445
                            byte_arrays=True))
 
446
        (self.mandos_serv
 
447
         .connect_to_signal(u"ClientNotFound",
 
448
                            self.client_not_found,
 
449
                            dbus_interface=server_interface,
 
450
                            byte_arrays=True))
 
451
        for path, client in mandos_clients.iteritems():
 
452
            client_proxy_object = self.bus.get_object(self.busname,
 
453
                                                      path)
 
454
            self.add_client(MandosClientWidget(server_proxy_object
 
455
                                               =self.mandos_serv,
 
456
                                               proxy_object
 
457
                                               =client_proxy_object,
 
458
                                               properties=client,
 
459
                                               update_hook
 
460
                                               =self.refresh,
 
461
                                               delete_hook
 
462
                                               =self.remove_client,
 
463
                                               logger
 
464
                                               =self.log_message),
 
465
                            path=path)
 
466
    
 
467
    def client_not_found(self, fingerprint, address):
 
468
        self.log_message((u"Client with address %s and fingerprint %s"
 
469
                          u" could not be found" % (address,
 
470
                                                    fingerprint)))
 
471
    
481
472
    def rebuild(self):
482
473
        """This rebuilds the User Interface.
483
474
        Call this when the widget layout needs to change"""
484
475
        self.uilist = []
485
 
        # self.uilist.append(urwid.ListBox(self.clients))
 
476
        #self.uilist.append(urwid.ListBox(self.clients))
486
477
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
487
478
                                                          clients),
488
 
                                       # header=urwid.Divider(),
 
479
                                       #header=urwid.Divider(),
489
480
                                       header=None,
490
 
                                       footer=urwid.Divider(
491
 
                                           div_char=self.divider)))
 
481
                                       footer=
 
482
                                       urwid.Divider(div_char=
 
483
                                                     self.divider)))
492
484
        if self.log_visible:
493
485
            self.uilist.append(self.logbox)
 
486
            pass
494
487
        self.topwidget = urwid.Pile(self.uilist)
495
 
 
496
 
    def add_log_line(self, markup):
 
488
    
 
489
    def log_message(self, message):
 
490
        timestamp = datetime.datetime.now().isoformat()
 
491
        self.log_message_raw(timestamp + u": " + message)
 
492
    
 
493
    def log_message_raw(self, markup):
 
494
        """Add a log message to the log buffer."""
497
495
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
498
 
        if self.max_log_length:
499
 
            if len(self.log) > self.max_log_length:
500
 
                del self.log[0:(len(self.log) - self.max_log_length)]
501
 
        self.logbox.set_focus(len(self.logbox.body.contents)-1,
502
 
                              coming_from="above")
 
496
        if (self.max_log_length
 
497
            and len(self.log) > self.max_log_length):
 
498
            del self.log[0:len(self.log)-self.max_log_length-1]
 
499
        self.logbox.set_focus(len(self.logbox.body.contents),
 
500
                              coming_from=u"above")
503
501
        self.refresh()
504
 
 
 
502
    
505
503
    def toggle_log_display(self):
506
504
        """Toggle visibility of the log buffer."""
507
505
        self.log_visible = not self.log_visible
508
506
        self.rebuild()
509
 
        log.debug("Log visibility changed to: %s", self.log_visible)
510
 
 
 
507
        self.log_message(u"Log visibility changed to: "
 
508
                         + unicode(self.log_visible))
 
509
    
511
510
    def change_log_display(self):
512
511
        """Change type of log display.
513
512
        Currently, this toggles wrapping of text lines."""
514
 
        if self.log_wrap == "clip":
515
 
            self.log_wrap = "any"
 
513
        if self.log_wrap == u"clip":
 
514
            self.log_wrap = u"any"
516
515
        else:
517
 
            self.log_wrap = "clip"
 
516
            self.log_wrap = u"clip"
518
517
        for textwidget in self.log:
519
518
            textwidget.set_wrap_mode(self.log_wrap)
520
 
        log.debug("Wrap mode: %s", self.log_wrap)
521
 
 
522
 
    def find_and_remove_client(self, path, interfaces):
523
 
        """Find a client by its object path and remove it.
524
 
 
525
 
        This is connected to the InterfacesRemoved signal from the
 
519
        self.log_message(u"Wrap mode: " + self.log_wrap)
 
520
    
 
521
    def find_and_remove_client(self, path, name):
 
522
        """Find an client from its object path and remove it.
 
523
        
 
524
        This is connected to the ClientRemoved signal from the
526
525
        Mandos server object."""
527
 
        if client_interface not in interfaces:
528
 
            # Not a Mandos client object; ignore
529
 
            return
530
526
        try:
531
527
            client = self.clients_dict[path]
532
528
        except KeyError:
533
529
            # not found?
534
 
            log.warning("Unknown client %s removed", path)
535
 
            return
536
 
        client.delete()
537
 
 
538
 
    def add_new_client(self, path, ifs_and_props):
539
 
        """Find a client by its object path and remove it.
540
 
 
541
 
        This is connected to the InterfacesAdded signal from the
542
 
        Mandos server object.
543
 
        """
544
 
        if client_interface not in ifs_and_props:
545
 
            # Not a Mandos client object; ignore
546
 
            return
 
530
            return
 
531
        self.remove_client(client, path)
 
532
    
 
533
    def add_new_client(self, path):
547
534
        client_proxy_object = self.bus.get_object(self.busname, path)
548
 
        self.add_client(MandosClientWidget(
549
 
            server_proxy_object=self.mandos_serv,
550
 
            proxy_object=client_proxy_object,
551
 
            update_hook=self.refresh,
552
 
            delete_hook=self.remove_client,
553
 
            properties=dict(ifs_and_props[client_interface])),
 
535
        self.add_client(MandosClientWidget(server_proxy_object
 
536
                                           =self.mandos_serv,
 
537
                                           proxy_object
 
538
                                           =client_proxy_object,
 
539
                                           update_hook
 
540
                                           =self.refresh,
 
541
                                           delete_hook
 
542
                                           =self.remove_client,
 
543
                                           logger
 
544
                                           =self.log_message),
554
545
                        path=path)
555
 
 
 
546
    
556
547
    def add_client(self, client, path=None):
557
548
        self.clients.append(client)
558
549
        if path is None:
559
550
            path = client.proxy.object_path
560
551
        self.clients_dict[path] = client
561
 
        self.clients.sort(key=lambda c: c.properties["Name"])
 
552
        self.clients.sort(None, lambda c: c.properties[u"Name"])
562
553
        self.refresh()
563
 
 
 
554
    
564
555
    def remove_client(self, client, path=None):
565
556
        self.clients.remove(client)
566
557
        if path is None:
567
558
            path = client.proxy.object_path
568
559
        del self.clients_dict[path]
 
560
        if not self.clients_dict:
 
561
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
 
562
            # is completely emptied, we need to recreate it.
 
563
            self.clients = urwid.SimpleListWalker([])
 
564
            self.rebuild()
569
565
        self.refresh()
570
 
 
 
566
    
571
567
    def refresh(self):
572
568
        """Redraw the screen"""
573
569
        canvas = self.topwidget.render(self.size, focus=True)
574
570
        self.screen.draw_screen(self.size, canvas)
575
 
 
 
571
    
576
572
    def run(self):
577
573
        """Start the main loop and exit when it's done."""
578
 
        log.addHandler(self.loghandler)
579
 
        self.orig_log_propagate = log.propagate
580
 
        log.propagate = False
581
 
        self.orig_log_level = log.level
582
 
        log.setLevel("INFO")
583
 
        self.bus = dbus.SystemBus()
584
 
        mandos_dbus_objc = self.bus.get_object(
585
 
            self.busname, "/", follow_name_owner_changes=True)
586
 
        self.mandos_serv = dbus.Interface(
587
 
            mandos_dbus_objc, dbus_interface=server_interface)
588
 
        try:
589
 
            mandos_clients = (self.mandos_serv
590
 
                              .GetAllClientsWithProperties())
591
 
            if not mandos_clients:
592
 
                log.warning("Note: Server has no clients.")
593
 
        except dbus.exceptions.DBusException:
594
 
            log.warning("Note: No Mandos server running.")
595
 
            mandos_clients = dbus.Dictionary()
596
 
 
597
 
        (self.mandos_serv
598
 
         .connect_to_signal("InterfacesRemoved",
599
 
                            self.find_and_remove_client,
600
 
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
601
 
                            byte_arrays=True))
602
 
        (self.mandos_serv
603
 
         .connect_to_signal("InterfacesAdded",
604
 
                            self.add_new_client,
605
 
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
606
 
                            byte_arrays=True))
607
 
        (self.mandos_serv
608
 
         .connect_to_signal("ClientNotFound",
609
 
                            self.client_not_found,
610
 
                            dbus_interface=server_interface,
611
 
                            byte_arrays=True))
612
 
        for path, client in mandos_clients.items():
613
 
            client_proxy_object = self.bus.get_object(self.busname,
614
 
                                                      path)
615
 
            self.add_client(MandosClientWidget(
616
 
                server_proxy_object=self.mandos_serv,
617
 
                proxy_object=client_proxy_object,
618
 
                properties=client,
619
 
                update_hook=self.refresh,
620
 
                delete_hook=self.remove_client),
621
 
                            path=path)
622
 
 
623
574
        self.refresh()
624
 
        self._input_callback_tag = (
625
 
            GLib.io_add_watch(
626
 
                GLib.IOChannel.unix_new(sys.stdin.fileno()),
627
 
                GLib.PRIORITY_DEFAULT, GLib.IO_IN,
628
 
                glib_safely(self.process_input)))
 
575
        self._input_callback_tag = (gobject.io_add_watch
 
576
                                    (sys.stdin.fileno(),
 
577
                                     gobject.IO_IN,
 
578
                                     self.process_input))
629
579
        self.main_loop.run()
630
580
        # Main loop has finished, we should close everything now
631
 
        GLib.source_remove(self._input_callback_tag)
632
 
        with warnings.catch_warnings():
633
 
            warnings.simplefilter("ignore", BytesWarning)
634
 
            self.screen.stop()
635
 
 
 
581
        gobject.source_remove(self._input_callback_tag)
 
582
        self.screen.stop()
 
583
    
636
584
    def stop(self):
637
585
        self.main_loop.quit()
638
 
        log.removeHandler(self.loghandler)
639
 
        log.propagate = self.orig_log_propagate
640
 
 
 
586
    
641
587
    def process_input(self, source, condition):
642
588
        keys = self.screen.get_input()
643
 
        translations = {"ctrl n": "down",       # Emacs
644
 
                        "ctrl p": "up",         # Emacs
645
 
                        "ctrl v": "page down",  # Emacs
646
 
                        "meta v": "page up",    # Emacs
647
 
                        " ": "page down",       # less
648
 
                        "f": "page down",       # less
649
 
                        "b": "page up",         # less
650
 
                        "j": "down",            # vi
651
 
                        "k": "up",              # vi
652
 
                        }
 
589
        translations = { u"ctrl n": u"down",      # Emacs
 
590
                         u"ctrl p": u"up",        # Emacs
 
591
                         u"ctrl v": u"page down", # Emacs
 
592
                         u"meta v": u"page up",   # Emacs
 
593
                         u" ": u"page down",      # less
 
594
                         u"f": u"page down",      # less
 
595
                         u"b": u"page up",        # less
 
596
                         u"j": u"down",           # vi
 
597
                         u"k": u"up",             # vi
 
598
                         }
653
599
        for key in keys:
654
600
            try:
655
601
                key = translations[key]
656
602
            except KeyError:    # :-)
657
603
                pass
658
 
 
659
 
            if key == "q" or key == "Q":
 
604
            
 
605
            if key == u"q" or key == u"Q":
660
606
                self.stop()
661
607
                break
662
 
            elif key == "window resize":
 
608
            elif key == u"window resize":
663
609
                self.size = self.screen.get_cols_rows()
664
610
                self.refresh()
665
 
            elif key == "ctrl l":
666
 
                self.screen.clear()
 
611
            elif key == u"\f":  # Ctrl-L
667
612
                self.refresh()
668
 
            elif key == "l" or key == "D":
 
613
            elif key == u"l" or key == u"D":
669
614
                self.toggle_log_display()
670
615
                self.refresh()
671
 
            elif key == "w" or key == "i":
 
616
            elif key == u"w" or key == u"i":
672
617
                self.change_log_display()
673
618
                self.refresh()
674
 
            elif key == "?" or key == "f1" or key == "esc":
 
619
            elif key == u"?" or key == u"f1" or key == u"esc":
675
620
                if not self.log_visible:
676
621
                    self.log_visible = True
677
622
                    self.rebuild()
678
 
                self.add_log_line(("bold",
679
 
                                   "  ".join(("q: Quit",
680
 
                                              "?: Help",
681
 
                                              "l: Log window toggle",
682
 
                                              "TAB: Switch window",
683
 
                                              "w: Wrap (log lines)",
684
 
                                              "v: Toggle verbose log",
685
 
                                   ))))
686
 
                self.add_log_line(("bold",
687
 
                                   "  ".join(("Clients:",
688
 
                                              "+: Enable",
689
 
                                              "-: Disable",
690
 
                                              "R: Remove",
691
 
                                              "s: Start new checker",
692
 
                                              "S: Stop checker",
693
 
                                              "C: Checker OK",
694
 
                                              "a: Approve",
695
 
                                              "d: Deny",
696
 
                                   ))))
 
623
                self.log_message_raw((u"bold",
 
624
                                      u"  ".
 
625
                                      join((u"q: Quit",
 
626
                                            u"?: Help",
 
627
                                            u"l: Log window toggle",
 
628
                                            u"TAB: Switch window",
 
629
                                            u"w: Wrap (log)"))))
 
630
                self.log_message_raw((u"bold",
 
631
                                      u"  "
 
632
                                      .join((u"Clients:",
 
633
                                             u"+: Enable",
 
634
                                             u"-: Disable",
 
635
                                             u"r: Remove",
 
636
                                             u"s: Start new checker",
 
637
                                             u"S: Stop checker",
 
638
                                             u"C: Checker OK",
 
639
                                             u"a: Approve",
 
640
                                             u"d: Deny"))))
697
641
                self.refresh()
698
 
            elif key == "tab":
 
642
            elif key == u"tab":
699
643
                if self.topwidget.get_focus() is self.logbox:
700
644
                    self.topwidget.set_focus(0)
701
645
                else:
702
646
                    self.topwidget.set_focus(self.logbox)
703
647
                self.refresh()
704
 
            elif key == "v":
705
 
                if log.level < logging.INFO:
706
 
                    log.setLevel(logging.INFO)
707
 
                    log.info("Verbose mode: Off")
708
 
                else:
709
 
                    log.setLevel(logging.NOTSET)
710
 
                    log.info("Verbose mode: On")
711
 
            # elif (key == "end" or key == "meta >" or key == "G"
712
 
            #       or key == ">"):
713
 
            #     pass            # xxx end-of-buffer
714
 
            # elif (key == "home" or key == "meta <" or key == "g"
715
 
            #       or key == "<"):
716
 
            #     pass            # xxx beginning-of-buffer
717
 
            # elif key == "ctrl e" or key == "$":
718
 
            #     pass            # xxx move-end-of-line
719
 
            # elif key == "ctrl a" or key == "^":
720
 
            #     pass            # xxx move-beginning-of-line
721
 
            # elif key == "ctrl b" or key == "meta (" or key == "h":
722
 
            #     pass            # xxx left
723
 
            # elif key == "ctrl f" or key == "meta )" or key == "l":
724
 
            #     pass            # xxx right
725
 
            # elif key == "a":
726
 
            #     pass            # scroll up log
727
 
            # elif key == "z":
728
 
            #     pass            # scroll down log
 
648
            #elif (key == u"end" or key == u"meta >" or key == u"G"
 
649
            #      or key == u">"):
 
650
            #    pass            # xxx end-of-buffer
 
651
            #elif (key == u"home" or key == u"meta <" or key == u"g"
 
652
            #      or key == u"<"):
 
653
            #    pass            # xxx beginning-of-buffer
 
654
            #elif key == u"ctrl e" or key == u"$":
 
655
            #    pass            # xxx move-end-of-line
 
656
            #elif key == u"ctrl a" or key == u"^":
 
657
            #    pass            # xxx move-beginning-of-line
 
658
            #elif key == u"ctrl b" or key == u"meta (" or key == u"h":
 
659
            #    pass            # xxx left
 
660
            #elif key == u"ctrl f" or key == u"meta )" or key == u"l":
 
661
            #    pass            # xxx right
 
662
            #elif key == u"a":
 
663
            #    pass            # scroll up log
 
664
            #elif key == u"z":
 
665
            #    pass            # scroll down log
729
666
            elif self.topwidget.selectable():
730
667
                self.topwidget.keypress(self.size, key)
731
668
                self.refresh()
732
669
        return True
733
670
 
734
 
 
735
 
class UILogHandler(logging.Handler):
736
 
    def __init__(self, ui, *args, **kwargs):
737
 
        self.ui = ui
738
 
        super(UILogHandler, self).__init__(*args, **kwargs)
739
 
        self.setFormatter(
740
 
            logging.Formatter("%(asctime)s: %(message)s"))
741
 
    def emit(self, record):
742
 
        msg = self.format(record)
743
 
        if record.levelno > logging.INFO:
744
 
            msg = ("bold", msg)
745
 
        self.ui.add_log_line(msg)
746
 
 
747
 
 
748
671
ui = UserInterface()
749
672
try:
750
673
    ui.run()
751
674
except KeyboardInterrupt:
752
 
    with warnings.catch_warnings():
753
 
        warnings.filterwarnings("ignore", "", BytesWarning)
754
 
        ui.screen.stop()
755
 
except Exception:
756
 
    with warnings.catch_warnings():
757
 
        warnings.filterwarnings("ignore", "", BytesWarning)
758
 
        ui.screen.stop()
 
675
    ui.screen.stop()
 
676
except Exception, e:
 
677
    ui.log_message(unicode(e))
 
678
    ui.screen.stop()
759
679
    raise