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  • Committer: Björn Påhlsson
  • Date: 2010-09-08 19:12:04 UTC
  • mto: (237.4.3 mandos-release)
  • mto: This revision was merged to the branch mainline in revision 421.
  • Revision ID: belorn@fukt.bsnet.se-20100908191204-svjb4wktrd0unu3m
added approval to mandos-ctl

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