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  • Committer: teddy at recompile
  • Date: 2019-12-04 23:35:08 UTC
  • Revision ID: teddy@recompile.se-20191204233508-npy5ss0cd3q23x9v
Minor refactor of Python code: Move "str = unicode" to top

* mandos: Move "str = unicode" to top of file.
* mandos-ctl: - '' -

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1
 
#!/usr/bin/python
 
1
#!/usr/bin/python3 -bbI
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
#
3
26
 
4
 
from __future__ import division, absolute_import, with_statement
 
27
from __future__ import (division, absolute_import, print_function,
 
28
                        unicode_literals)
 
29
try:
 
30
    from future_builtins import *
 
31
except ImportError:
 
32
    pass
5
33
 
6
34
import sys
7
35
import os
8
 
import signal
9
 
 
 
36
import warnings
10
37
import datetime
 
38
import locale
 
39
import logging
11
40
 
12
41
import urwid.curses_display
13
42
import urwid
14
43
 
15
44
from dbus.mainloop.glib import DBusGMainLoop
16
 
import gobject
 
45
from gi.repository import GLib
17
46
 
18
47
import dbus
19
48
 
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)
 
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)
28
61
 
29
62
# Some useful constants
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)
 
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
 
42
73
 
43
74
def isoformat_to_datetime(iso):
44
75
    "Parse an ISO 8601 date string to a datetime.datetime()"
45
76
    if not iso:
46
77
        return None
47
 
    d, t = iso.split(u"T", 1)
48
 
    year, month, day = d.split(u"-", 2)
49
 
    hour, minute, second = t.split(u":", 2)
 
78
    d, t = iso.split("T", 1)
 
79
    year, month, day = d.split("-", 2)
 
80
    hour, minute, second = t.split(":", 2)
50
81
    second, fraction = divmod(float(second), 1)
51
82
    return datetime.datetime(int(year),
52
83
                             int(month),
53
84
                             int(day),
54
85
                             int(hour),
55
86
                             int(minute),
56
 
                             int(second),           # Whole seconds
57
 
                             int(fraction*1000000)) # Microseconds
 
87
                             int(second),            # Whole seconds
 
88
                             int(fraction*1000000))  # Microseconds
 
89
 
58
90
 
59
91
class MandosClientPropertyCache(object):
60
92
    """This wraps a Mandos Client D-Bus proxy object, caches the
61
93
    properties and calls a hook function when any of them are
62
94
    changed.
63
95
    """
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.
 
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.
84
115
        """
85
116
        # Update properties dict with new value
86
 
        self.properties[property] = value
 
117
        if interface == client_interface:
 
118
            self.properties.update(properties)
 
119
 
 
120
    def delete(self):
 
121
        self.property_changed_match.remove()
87
122
 
88
123
 
89
124
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
90
125
    """A Mandos Client which is visible on the screen.
91
126
    """
92
 
    
 
127
 
93
128
    def __init__(self, server_proxy_object=None, update_hook=None,
94
 
                 delete_hook=None, logger=None, *args, **kwargs):
 
129
                 delete_hook=None, **kwargs):
95
130
        # Called on update
96
131
        self.update_hook = update_hook
97
132
        # Called on delete
98
133
        self.delete_hook = delete_hook
99
134
        # Mandos Server proxy object
100
135
        self.server_proxy_object = server_proxy_object
101
 
        # Logger
102
 
        self.logger = logger
103
 
        
 
136
 
104
137
        self._update_timer_callback_tag = None
105
 
        self.last_checker_failed = False
106
 
        
 
138
 
107
139
        # The widget shown normally
108
 
        self._text_widget = urwid.Text(u"")
 
140
        self._text_widget = urwid.Text("")
109
141
        # The widget shown when we have focus
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)
 
142
        self._focus_text_widget = urwid.Text("")
 
143
        super(MandosClientWidget, self).__init__(**kwargs)
114
144
        self.update()
115
145
        self.opened = False
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
 
    
 
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
 
151
183
    def checker_completed(self, exitstatus, condition, command):
152
184
        if exitstatus == 0:
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))
 
185
            log.debug('Checker for client %s (command "%s")'
 
186
                      " succeeded", self.properties["Name"], command)
160
187
            self.update()
161
188
            return
162
189
        # 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))
168
190
        if os.WIFEXITED(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)))
 
191
            log.info('Checker for client %s (command "%s") failed'
 
192
                     " with exit code %d", self.properties["Name"],
 
193
                     command, os.WEXITSTATUS(condition))
173
194
        elif os.WIFSIGNALED(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')
 
195
            log.info('Checker for client %s (command "%s") was'
 
196
                     " killed by signal %d", self.properties["Name"],
 
197
                     command, os.WTERMSIG(condition))
184
198
        self.update()
185
 
    
 
199
 
186
200
    def checker_started(self, command):
187
 
        #self.logger(u'Client %s started checker "%s"'
188
 
        #            % (self.properties[u"name"], unicode(command)))
189
 
        pass
190
 
    
 
201
        """Server signals that a checker started."""
 
202
        log.debug('Client %s started checker "%s"',
 
203
                  self.properties["Name"], command)
 
204
 
191
205
    def got_secret(self):
192
 
        self.logger(u'Client %s received its secret'
193
 
                    % self.properties[u"name"])
194
 
    
 
206
        log.info("Client %s received its secret",
 
207
                 self.properties["Name"])
 
208
 
195
209
    def need_approval(self, timeout, default):
196
210
        if not default:
197
 
            message = u'Client %s needs approval within %s seconds'
 
211
            message = "Client %s needs approval within %f seconds"
198
212
        else:
199
 
            message = u'Client %s will get its secret in %s seconds'
200
 
        self.logger(message
201
 
                    % (self.properties[u"name"], timeout/1000))
202
 
    
 
213
            message = "Client %s will get its secret in %f seconds"
 
214
        log.info(message, self.properties["Name"], timeout/1000)
 
215
 
203
216
    def rejected(self, reason):
204
 
        self.logger(u'Client %s was rejected; reason: %s'
205
 
                    % (self.properties[u"name"], reason))
206
 
    
 
217
        log.info("Client %s was rejected; reason: %s",
 
218
                 self.properties["Name"], reason)
 
219
 
207
220
    def selectable(self):
208
221
        """Make this a "selectable" widget.
209
222
        This overrides the method from urwid.FlowWidget."""
210
223
        return True
211
 
    
212
 
    def rows(self, (maxcol,), focus=False):
 
224
 
 
225
    def rows(self, maxcolrow, focus=False):
213
226
        """How many rows this widget will occupy might depend on
214
227
        whether we have focus or not.
215
228
        This overrides the method from urwid.FlowWidget"""
216
 
        return self.current_widget(focus).rows((maxcol,), focus=focus)
217
 
    
 
229
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
 
230
 
218
231
    def current_widget(self, focus=False):
219
232
        if focus or self.opened:
220
233
            return self._focus_widget
221
234
        return self._widget
222
 
    
 
235
 
223
236
    def update(self):
224
237
        "Called when what is visible on the screen should be updated."
225
238
        # How to add standout mode to a style
226
 
        with_standout = { u"normal": u"standout",
227
 
                          u"bold": u"bold-standout",
228
 
                          u"underline-blink":
229
 
                              u"underline-blink-standout",
230
 
                          u"bold-underline-blink":
231
 
                              u"bold-underline-blink-standout",
232
 
                          }
 
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
                         }
233
246
 
234
247
        # Rebuild focus and non-focus widgets using current properties
235
248
 
236
249
        # Base part of a client. Name!
237
 
        base = (u'%(name)s: '
238
 
                      % {u"name": self.properties[u"name"]})
239
 
        if not self.properties[u"enabled"]:
240
 
            message = u"DISABLED"
241
 
        elif self.last_checker_failed:
242
 
            timeout = datetime.timedelta(milliseconds
243
 
                                         = self.properties[u"timeout"])
244
 
            last_ok = isoformat_to_datetime(
245
 
                max((self.properties["last_checked_ok"]
246
 
                     or self.properties["created"]),
247
 
                    self.properties[u"last_enabled"]))
248
 
            timer = timeout - (datetime.datetime.utcnow() - last_ok)
249
 
            message = (u'A checker has failed! Time until client gets diabled: %s'
250
 
                           % unicode(timer).rsplit(".", 1)[0])
251
 
        elif self.properties[u"approved_pending"]:
252
 
            if self.properties[u"approved_by_default"]:
253
 
                message = u"Connection established to client. (d)eny?"
254
 
            else:
255
 
                message = u"Seeks approval to send secret. (a)pprove?"
 
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)
256
285
        else:
257
 
            message = u"enabled"
258
 
        self._text = "%s%s" % (base, message)
259
 
            
 
286
            message = "enabled"
 
287
            self.using_timer(False)
 
288
        self._text = "{}{}".format(base, message)
 
289
 
260
290
        if not urwid.supports_unicode():
261
291
            self._text = self._text.encode("ascii", "replace")
262
 
        textlist = [(u"normal", self._text)]
 
292
        textlist = [("normal", self._text)]
263
293
        self._text_widget.set_text(textlist)
264
294
        self._focus_text_widget.set_text([(with_standout[text[0]],
265
295
                                           text[1])
272
302
        # Run update hook, if any
273
303
        if self.update_hook is not None:
274
304
            self.update_hook()
275
 
    
 
305
 
276
306
    def update_timer(self):
277
 
        "called by gobject"
 
307
        """called by GLib. Will indefinitely loop until
 
308
        GLib.source_remove() on tag is called
 
309
        """
278
310
        self.update()
279
311
        return True             # Keep calling this
280
 
    
281
 
    def delete(self):
 
312
 
 
313
    def delete(self, **kwargs):
282
314
        if self._update_timer_callback_tag is not None:
283
 
            gobject.source_remove(self._update_timer_callback_tag)
 
315
            GLib.source_remove(self._update_timer_callback_tag)
284
316
            self._update_timer_callback_tag = None
 
317
        for match in self.match_objects:
 
318
            match.remove()
 
319
        self.match_objects = ()
285
320
        if self.delete_hook is not None:
286
321
            self.delete_hook(self)
287
 
    
288
 
    def render(self, (maxcol,), focus=False):
 
322
        return super(MandosClientWidget, self).delete(**kwargs)
 
323
 
 
324
    def render(self, maxcolrow, focus=False):
289
325
        """Render differently if we have focus.
290
326
        This overrides the method from urwid.FlowWidget"""
291
 
        return self.current_widget(focus).render((maxcol,),
 
327
        return self.current_widget(focus).render(maxcolrow,
292
328
                                                 focus=focus)
293
 
    
294
 
    def keypress(self, (maxcol,), key):
 
329
 
 
330
    def keypress(self, maxcolrow, key):
295
331
        """Handle keys.
296
332
        This overrides the method from urwid.FlowWidget"""
297
 
        if key == u"+":
298
 
            self.proxy.Enable(dbus_interface = client_interface)
299
 
        elif key == u"-":
300
 
            self.proxy.Disable(dbus_interface = client_interface)
301
 
        elif key == u"a":
 
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":
302
342
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
303
 
                               dbus_interface = client_interface)
304
 
        elif key == u"d":
 
343
                               dbus_interface=client_interface,
 
344
                               ignore_reply=True)
 
345
        elif key == "d":
305
346
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
306
 
                                  dbus_interface = client_interface)
307
 
        elif key == u"r" or key == u"_" or key == u"ctrl k":
 
347
                               dbus_interface=client_interface,
 
348
                               ignore_reply=True)
 
349
        elif key == "R" or key == "_" or key == "ctrl k":
308
350
            self.server_proxy_object.RemoveClient(self.proxy
309
 
                                                  .object_path)
310
 
        elif key == u"s":
311
 
            self.proxy.StartChecker(dbus_interface = client_interface)
312
 
        elif key == u"S":
313
 
            self.proxy.StopChecker(dbus_interface = client_interface)
314
 
        elif key == u"C":
315
 
            self.proxy.CheckedOK(dbus_interface = client_interface)
 
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)
316
364
        # xxx
317
 
#         elif key == u"p" or key == "=":
 
365
#         elif key == "p" or key == "=":
318
366
#             self.proxy.pause()
319
 
#         elif key == u"u" or key == ":":
 
367
#         elif key == "u" or key == ":":
320
368
#             self.proxy.unpause()
321
 
#         elif key == u"RET":
 
369
#         elif key == "RET":
322
370
#             self.open()
323
 
#        elif key == u"+":
324
 
#            self.proxy.Approve(True)
325
 
#        elif key == u"-":
326
 
#            self.proxy.Approve(False)
327
371
        else:
328
372
            return key
329
 
    
330
 
    def property_changed(self, property=None, value=None,
331
 
                         *args, **kwargs):
332
 
        """Call self.update() if old value is not new value.
 
373
 
 
374
    def properties_changed(self, interface, properties, invalidated):
 
375
        """Call self.update() if any properties changed.
333
376
        This overrides the method from MandosClientPropertyCache"""
334
 
        property_name = unicode(property)
335
 
        old_value = self.properties.get(property_name)
336
 
        super(MandosClientWidget, self).property_changed(
337
 
            property=property, value=value, *args, **kwargs)
338
 
        if self.properties.get(property_name) != old_value:
 
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):
339
383
            self.update()
340
384
 
341
385
 
 
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
 
342
396
class ConstrainedListBox(urwid.ListBox):
343
397
    """Like a normal urwid.ListBox, but will consume all "up" or
344
398
    "down" key presses, thus not allowing any containing widgets to
345
399
    use them as an excuse to shift focus away from this widget.
346
400
    """
347
 
    def keypress(self, (maxcol, maxrow), key):
348
 
        ret = super(ConstrainedListBox, self).keypress((maxcol, maxrow), key)
349
 
        if ret in (u"up", u"down"):
 
401
    def keypress(self, *args, **kwargs):
 
402
        ret = (super(ConstrainedListBox, self)
 
403
               .keypress(*args, **kwargs))
 
404
        if ret in ("up", "down"):
350
405
            return
351
406
        return ret
352
407
 
357
412
    """
358
413
    def __init__(self, max_log_length=1000):
359
414
        DBusGMainLoop(set_as_default=True)
360
 
        
 
415
 
361
416
        self.screen = urwid.curses_display.Screen()
362
 
        
 
417
 
363
418
        self.screen.register_palette((
364
 
                (u"normal",
365
 
                 u"default", u"default", None),
366
 
                (u"bold",
367
 
                 u"default", u"default", u"bold"),
368
 
                (u"underline-blink",
369
 
                 u"default", u"default", u"underline"),
370
 
                (u"standout",
371
 
                 u"default", u"default", u"standout"),
372
 
                (u"bold-underline-blink",
373
 
                 u"default", u"default", (u"bold", u"underline")),
374
 
                (u"bold-standout",
375
 
                 u"default", u"default", (u"bold", u"standout")),
376
 
                (u"underline-blink-standout",
377
 
                 u"default", u"default", (u"underline", u"standout")),
378
 
                (u"bold-underline-blink-standout",
379
 
                 u"default", u"default", (u"bold", u"underline",
380
 
                                          u"standout")),
 
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"),
381
438
                ))
382
 
        
 
439
 
383
440
        if urwid.supports_unicode():
384
 
            self.divider = u"─" # \u2500
385
 
            #self.divider = u"━" # \u2501
 
441
            self.divider = "─"  # \u2500
386
442
        else:
387
 
            #self.divider = u"-" # \u002d
388
 
            self.divider = u"_" # \u005f
389
 
        
 
443
            self.divider = "_"  # \u005f
 
444
 
390
445
        self.screen.start()
391
 
        
 
446
 
392
447
        self.size = self.screen.get_cols_rows()
393
 
        
 
448
 
394
449
        self.clients = urwid.SimpleListWalker([])
395
450
        self.clients_dict = {}
396
 
        
 
451
 
397
452
        # We will add Text widgets to this list
398
 
        self.log = []
 
453
        self.log = urwid.SimpleListWalker([])
399
454
        self.max_log_length = max_log_length
400
 
        
 
455
 
401
456
        # We keep a reference to the log widget so we can remove it
402
457
        # from the ListWalker without it getting destroyed
403
458
        self.logbox = ConstrainedListBox(self.log)
404
 
        
 
459
 
405
460
        # This keeps track of whether self.uilist currently has
406
461
        # self.logbox in it or not
407
462
        self.log_visible = True
408
 
        self.log_wrap = u"any"
409
 
        
 
463
        self.log_wrap = "any"
 
464
 
 
465
        self.loghandler = UILogHandler(self)
 
466
 
410
467
        self.rebuild()
411
 
        self.log_message_raw((u"bold",
412
 
                              u"Mandos Monitor version " + version))
413
 
        self.log_message_raw((u"bold",
414
 
                              u"q: Quit  ?: Help"))
415
 
        
416
 
        self.busname = domain + '.Mandos'
417
 
        self.main_loop = gobject.MainLoop()
418
 
        self.bus = dbus.SystemBus()
419
 
        mandos_dbus_objc = self.bus.get_object(
420
 
            self.busname, u"/", follow_name_owner_changes=True)
421
 
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
422
 
                                          dbus_interface
423
 
                                          = server_interface)
424
 
        try:
425
 
            mandos_clients = (self.mandos_serv
426
 
                              .GetAllClientsWithProperties())
427
 
        except dbus.exceptions.DBusException:
428
 
            mandos_clients = dbus.Dictionary()
429
 
        
430
 
        (self.mandos_serv
431
 
         .connect_to_signal(u"ClientRemoved",
432
 
                            self.find_and_remove_client,
433
 
                            dbus_interface=server_interface,
434
 
                            byte_arrays=True))
435
 
        (self.mandos_serv
436
 
         .connect_to_signal(u"ClientAdded",
437
 
                            self.add_new_client,
438
 
                            dbus_interface=server_interface,
439
 
                            byte_arrays=True))
440
 
        (self.mandos_serv
441
 
         .connect_to_signal(u"ClientNotFound",
442
 
                            self.client_not_found,
443
 
                            dbus_interface=server_interface,
444
 
                            byte_arrays=True))
445
 
        for path, client in mandos_clients.iteritems():
446
 
            client_proxy_object = self.bus.get_object(self.busname,
447
 
                                                      path)
448
 
            self.add_client(MandosClientWidget(server_proxy_object
449
 
                                               =self.mandos_serv,
450
 
                                               proxy_object
451
 
                                               =client_proxy_object,
452
 
                                               properties=client,
453
 
                                               update_hook
454
 
                                               =self.refresh,
455
 
                                               delete_hook
456
 
                                               =self.remove_client,
457
 
                                               logger
458
 
                                               =self.log_message),
459
 
                            path=path)
460
 
    
461
 
    def client_not_found(self, fingerprint, address):
462
 
        self.log_message((u"Client with address %s and fingerprint %s"
463
 
                          u" could not be found" % (address,
464
 
                                                    fingerprint)))
465
 
    
 
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
 
466
479
    def rebuild(self):
467
480
        """This rebuilds the User Interface.
468
481
        Call this when the widget layout needs to change"""
469
482
        self.uilist = []
470
 
        #self.uilist.append(urwid.ListBox(self.clients))
471
 
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.clients),
472
 
                                       #header=urwid.Divider(),
 
483
        # self.uilist.append(urwid.ListBox(self.clients))
 
484
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
 
485
                                                          clients),
 
486
                                       # header=urwid.Divider(),
473
487
                                       header=None,
474
 
                                       footer=urwid.Divider(div_char=self.divider)))
 
488
                                       footer=urwid.Divider(
 
489
                                           div_char=self.divider)))
475
490
        if self.log_visible:
476
491
            self.uilist.append(self.logbox)
477
 
            pass
478
492
        self.topwidget = urwid.Pile(self.uilist)
479
 
    
480
 
    def log_message(self, message):
481
 
        timestamp = datetime.datetime.now().isoformat()
482
 
        self.log_message_raw(timestamp + u": " + message)
483
 
    
484
 
    def log_message_raw(self, markup):
485
 
        """Add a log message to the log buffer."""
 
493
 
 
494
    def add_log_line(self, markup):
486
495
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
487
 
        if (self.max_log_length
488
 
            and len(self.log) > self.max_log_length):
489
 
            del self.log[0:len(self.log)-self.max_log_length-1]
490
 
        self.logbox.set_focus(len(self.logbox.body.contents),
491
 
                              coming_from=u"above")
 
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")
492
501
        self.refresh()
493
 
    
 
502
 
494
503
    def toggle_log_display(self):
495
504
        """Toggle visibility of the log buffer."""
496
505
        self.log_visible = not self.log_visible
497
506
        self.rebuild()
498
 
        self.log_message(u"Log visibility changed to: "
499
 
                         + unicode(self.log_visible))
500
 
    
 
507
        log.debug("Log visibility changed to: %s", self.log_visible)
 
508
 
501
509
    def change_log_display(self):
502
510
        """Change type of log display.
503
511
        Currently, this toggles wrapping of text lines."""
504
 
        if self.log_wrap == u"clip":
505
 
            self.log_wrap = u"any"
 
512
        if self.log_wrap == "clip":
 
513
            self.log_wrap = "any"
506
514
        else:
507
 
            self.log_wrap = u"clip"
 
515
            self.log_wrap = "clip"
508
516
        for textwidget in self.log:
509
517
            textwidget.set_wrap_mode(self.log_wrap)
510
 
        self.log_message(u"Wrap mode: " + self.log_wrap)
511
 
    
512
 
    def find_and_remove_client(self, path, name):
513
 
        """Find an client from its object path and remove it.
514
 
        
515
 
        This is connected to the ClientRemoved signal from the
 
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
516
524
        Mandos server object."""
 
525
        if client_interface not in interfaces:
 
526
            # Not a Mandos client object; ignore
 
527
            return
517
528
        try:
518
529
            client = self.clients_dict[path]
519
530
        except KeyError:
520
531
            # not found?
521
 
            return
522
 
        self.remove_client(client, path)
523
 
    
524
 
    def add_new_client(self, path):
 
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
525
545
        client_proxy_object = self.bus.get_object(self.busname, path)
526
 
        self.add_client(MandosClientWidget(server_proxy_object
527
 
                                           =self.mandos_serv,
528
 
                                           proxy_object
529
 
                                           =client_proxy_object,
530
 
                                           update_hook
531
 
                                           =self.refresh,
532
 
                                           delete_hook
533
 
                                           =self.remove_client,
534
 
                                           logger
535
 
                                           =self.log_message),
 
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])),
536
552
                        path=path)
537
 
    
 
553
 
538
554
    def add_client(self, client, path=None):
539
555
        self.clients.append(client)
540
556
        if path is None:
541
557
            path = client.proxy.object_path
542
558
        self.clients_dict[path] = client
543
 
        self.clients.sort(None, lambda c: c.properties[u"name"])
 
559
        self.clients.sort(key=lambda c: c.properties["Name"])
544
560
        self.refresh()
545
 
    
 
561
 
546
562
    def remove_client(self, client, path=None):
547
563
        self.clients.remove(client)
548
564
        if path is None:
549
565
            path = client.proxy.object_path
550
566
        del self.clients_dict[path]
551
 
        if not self.clients_dict:
552
 
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
553
 
            # is completely emptied, we need to recreate it.
554
 
            self.clients = urwid.SimpleListWalker([])
555
 
            self.rebuild()
556
567
        self.refresh()
557
 
    
 
568
 
558
569
    def refresh(self):
559
570
        """Redraw the screen"""
560
571
        canvas = self.topwidget.render(self.size, focus=True)
561
572
        self.screen.draw_screen(self.size, canvas)
562
 
    
 
573
 
563
574
    def run(self):
564
575
        """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
 
565
621
        self.refresh()
566
 
        self._input_callback_tag = (gobject.io_add_watch
567
 
                                    (sys.stdin.fileno(),
568
 
                                     gobject.IO_IN,
569
 
                                     self.process_input))
 
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)))
570
627
        self.main_loop.run()
571
628
        # Main loop has finished, we should close everything now
572
 
        gobject.source_remove(self._input_callback_tag)
573
 
        self.screen.stop()
574
 
    
 
629
        GLib.source_remove(self._input_callback_tag)
 
630
        with warnings.catch_warnings():
 
631
            warnings.simplefilter("ignore", BytesWarning)
 
632
            self.screen.stop()
 
633
 
575
634
    def stop(self):
576
635
        self.main_loop.quit()
577
 
    
 
636
        log.removeHandler(self.loghandler)
 
637
        log.propagate = self.orig_log_propagate
 
638
 
578
639
    def process_input(self, source, condition):
579
640
        keys = self.screen.get_input()
580
 
        translations = { u"ctrl n": u"down",      # Emacs
581
 
                         u"ctrl p": u"up",        # Emacs
582
 
                         u"ctrl v": u"page down", # Emacs
583
 
                         u"meta v": u"page up",   # Emacs
584
 
                         u" ": u"page down",      # less
585
 
                         u"f": u"page down",      # less
586
 
                         u"b": u"page up",        # less
587
 
                         u"j": u"down",           # vi
588
 
                         u"k": u"up",             # vi
589
 
                         }
 
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
                        }
590
651
        for key in keys:
591
652
            try:
592
653
                key = translations[key]
593
654
            except KeyError:    # :-)
594
655
                pass
595
 
            
596
 
            if key == u"q" or key == u"Q":
 
656
 
 
657
            if key == "q" or key == "Q":
597
658
                self.stop()
598
659
                break
599
 
            elif key == u"window resize":
 
660
            elif key == "window resize":
600
661
                self.size = self.screen.get_cols_rows()
601
662
                self.refresh()
602
 
            elif key == u"\f":  # Ctrl-L
 
663
            elif key == "ctrl l":
 
664
                self.screen.clear()
603
665
                self.refresh()
604
 
            elif key == u"l" or key == u"D":
 
666
            elif key == "l" or key == "D":
605
667
                self.toggle_log_display()
606
668
                self.refresh()
607
 
            elif key == u"w" or key == u"i":
 
669
            elif key == "w" or key == "i":
608
670
                self.change_log_display()
609
671
                self.refresh()
610
 
            elif key == u"?" or key == u"f1" or key == u"esc":
 
672
            elif key == "?" or key == "f1" or key == "esc":
611
673
                if not self.log_visible:
612
674
                    self.log_visible = True
613
675
                    self.rebuild()
614
 
                self.log_message_raw((u"bold",
615
 
                                      u"  ".
616
 
                                      join((u"q: Quit",
617
 
                                            u"?: Help",
618
 
                                            u"l: Log window toggle",
619
 
                                            u"TAB: Switch window",
620
 
                                            u"w: Wrap (log)"))))
621
 
                self.log_message_raw((u"bold",
622
 
                                      u"  "
623
 
                                      .join((u"Clients:",
624
 
                                             u"+: Enable",
625
 
                                             u"-: Disable",
626
 
                                             u"r: Remove",
627
 
                                             u"s: Start new checker",
628
 
                                             u"S: Stop checker",
629
 
                                             u"C: Checker OK",
630
 
                                             u"a: Approve",
631
 
                                             u"d: Deny"))))
 
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
                                   ))))
632
695
                self.refresh()
633
 
            elif key == u"tab":
 
696
            elif key == "tab":
634
697
                if self.topwidget.get_focus() is self.logbox:
635
698
                    self.topwidget.set_focus(0)
636
699
                else:
637
700
                    self.topwidget.set_focus(self.logbox)
638
701
                self.refresh()
639
 
            #elif (key == u"end" or key == u"meta >" or key == u"G"
640
 
            #      or key == u">"):
641
 
            #    pass            # xxx end-of-buffer
642
 
            #elif (key == u"home" or key == u"meta <" or key == u"g"
643
 
            #      or key == u"<"):
644
 
            #    pass            # xxx beginning-of-buffer
645
 
            #elif key == u"ctrl e" or key == u"$":
646
 
            #    pass            # xxx move-end-of-line
647
 
            #elif key == u"ctrl a" or key == u"^":
648
 
            #    pass            # xxx move-beginning-of-line
649
 
            #elif key == u"ctrl b" or key == u"meta (" or key == u"h":
650
 
            #    pass            # xxx left
651
 
            #elif key == u"ctrl f" or key == u"meta )" or key == u"l":
652
 
            #    pass            # xxx right
653
 
            #elif key == u"a":
654
 
            #    pass            # scroll up log
655
 
            #elif key == u"z":
656
 
            #    pass            # scroll down log
 
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
657
727
            elif self.topwidget.selectable():
658
728
                self.topwidget.keypress(self.size, key)
659
729
                self.refresh()
660
730
        return True
661
731
 
 
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
 
662
746
ui = UserInterface()
663
747
try:
664
748
    ui.run()
665
 
except Exception, e:
666
 
    ui.log_message(unicode(e))
667
 
    ui.screen.stop()
 
749
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()
668
757
    raise