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  • Committer: Teddy Hogeborn
  • Date: 2024-09-09 03:08:13 UTC
  • mto: This revision was merged to the branch mainline in revision 410.
  • Revision ID: teddy@recompile.se-20240909030813-hrv5jg2mlae92dq8
Update Debian Policy version to 4.7.0; no other changes necessary.

* debian/control (Standards-Version): Change to "4.7.0".

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removed removed

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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
#
 
26
from __future__ import (division, absolute_import, print_function,
 
27
                        unicode_literals)
3
28
 
4
 
from __future__ import division, absolute_import, with_statement
 
29
try:
 
30
    from future_builtins import *
 
31
except ImportError:
 
32
    pass
5
33
 
6
34
import sys
 
35
import logging
7
36
import os
8
 
import signal
9
 
 
 
37
import warnings
10
38
import datetime
 
39
import locale
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
    __metaclass__ = type
 
51
    str = unicode
 
52
    input = raw_input
 
53
 
 
54
# Show warnings by default
 
55
if not sys.warnoptions:
 
56
    warnings.simplefilter("default")
 
57
 
 
58
log = logging.getLogger(os.path.basename(sys.argv[0]))
 
59
logging.basicConfig(level="NOTSET", # Show all messages
 
60
                    format="%(message)s") # Show basic log messages
 
61
 
 
62
logging.captureWarnings(True)   # Show warnings via the logging system
 
63
 
 
64
locale.setlocale(locale.LC_ALL, "")
 
65
 
 
66
logging.getLogger("dbus.proxies").setLevel(logging.CRITICAL)
28
67
 
29
68
# 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)
 
69
domain = "se.recompile"
 
70
server_interface = domain + ".Mandos"
 
71
client_interface = domain + ".Mandos.Client"
 
72
version = "1.8.16"
 
73
 
 
74
try:
 
75
    dbus.OBJECT_MANAGER_IFACE
 
76
except AttributeError:
 
77
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
 
78
 
42
79
 
43
80
def isoformat_to_datetime(iso):
44
81
    "Parse an ISO 8601 date string to a datetime.datetime()"
45
82
    if not iso:
46
83
        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)
 
84
    d, t = iso.split("T", 1)
 
85
    year, month, day = d.split("-", 2)
 
86
    hour, minute, second = t.split(":", 2)
50
87
    second, fraction = divmod(float(second), 1)
51
88
    return datetime.datetime(int(year),
52
89
                             int(month),
53
90
                             int(day),
54
91
                             int(hour),
55
92
                             int(minute),
56
 
                             int(second),           # Whole seconds
57
 
                             int(fraction*1000000)) # Microseconds
58
 
 
59
 
class MandosClientPropertyCache(object):
 
93
                             int(second),            # Whole seconds
 
94
                             int(fraction*1000000))  # Microseconds
 
95
 
 
96
 
 
97
class MandosClientPropertyCache:
60
98
    """This wraps a Mandos Client D-Bus proxy object, caches the
61
99
    properties and calls a hook function when any of them are
62
100
    changed.
63
101
    """
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.
 
102
    def __init__(self, proxy_object=None, properties=None, **kwargs):
 
103
        self.proxy = proxy_object  # Mandos Client proxy object
 
104
        self.properties = dict() if properties is None else properties
 
105
        self.property_changed_match = (
 
106
            self.proxy.connect_to_signal("PropertiesChanged",
 
107
                                         self.properties_changed,
 
108
                                         dbus.PROPERTIES_IFACE,
 
109
                                         byte_arrays=True))
 
110
 
 
111
        if properties is None:
 
112
            self.properties.update(self.proxy.GetAll(
 
113
                client_interface,
 
114
                dbus_interface=dbus.PROPERTIES_IFACE))
 
115
 
 
116
        super(MandosClientPropertyCache, self).__init__(**kwargs)
 
117
 
 
118
    def properties_changed(self, interface, properties, invalidated):
 
119
        """This is called whenever we get a PropertiesChanged signal
 
120
        It updates the changed properties in the "properties" dict.
84
121
        """
85
122
        # Update properties dict with new value
86
 
        self.properties[property] = value
 
123
        if interface == client_interface:
 
124
            self.properties.update(properties)
 
125
 
 
126
    def delete(self):
 
127
        self.property_changed_match.remove()
87
128
 
88
129
 
89
130
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
90
131
    """A Mandos Client which is visible on the screen.
91
132
    """
92
 
    
 
133
 
93
134
    def __init__(self, server_proxy_object=None, update_hook=None,
94
 
                 delete_hook=None, logger=None, *args, **kwargs):
 
135
                 delete_hook=None, **kwargs):
95
136
        # Called on update
96
137
        self.update_hook = update_hook
97
138
        # Called on delete
98
139
        self.delete_hook = delete_hook
99
140
        # Mandos Server proxy object
100
141
        self.server_proxy_object = server_proxy_object
101
 
        # Logger
102
 
        self.logger = logger
103
 
        
 
142
 
104
143
        self._update_timer_callback_tag = None
105
 
        self.last_checker_failed = False
106
 
        
 
144
 
107
145
        # The widget shown normally
108
 
        self._text_widget = urwid.Text(u"")
 
146
        self._text_widget = urwid.Text("")
109
147
        # 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)
 
148
        self._focus_text_widget = urwid.Text("")
 
149
        super(MandosClientWidget, self).__init__(**kwargs)
114
150
        self.update()
115
151
        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
 
    
 
152
 
 
153
        self.match_objects = (
 
154
            self.proxy.connect_to_signal("CheckerCompleted",
 
155
                                         self.checker_completed,
 
156
                                         client_interface,
 
157
                                         byte_arrays=True),
 
158
            self.proxy.connect_to_signal("CheckerStarted",
 
159
                                         self.checker_started,
 
160
                                         client_interface,
 
161
                                         byte_arrays=True),
 
162
            self.proxy.connect_to_signal("GotSecret",
 
163
                                         self.got_secret,
 
164
                                         client_interface,
 
165
                                         byte_arrays=True),
 
166
            self.proxy.connect_to_signal("NeedApproval",
 
167
                                         self.need_approval,
 
168
                                         client_interface,
 
169
                                         byte_arrays=True),
 
170
            self.proxy.connect_to_signal("Rejected",
 
171
                                         self.rejected,
 
172
                                         client_interface,
 
173
                                         byte_arrays=True))
 
174
        log.debug("Created client %s", self.properties["Name"])
 
175
 
 
176
    def using_timer(self, flag):
 
177
        """Call this method with True or False when timer should be
 
178
        activated or deactivated.
 
179
        """
 
180
        if flag and self._update_timer_callback_tag is None:
 
181
            # Will update the shown timer value every second
 
182
            self._update_timer_callback_tag = (
 
183
                GLib.timeout_add(1000,
 
184
                                 glib_safely(self.update_timer)))
 
185
        elif not (flag or self._update_timer_callback_tag is None):
 
186
            GLib.source_remove(self._update_timer_callback_tag)
 
187
            self._update_timer_callback_tag = None
 
188
 
151
189
    def checker_completed(self, exitstatus, condition, command):
152
190
        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))
 
191
            log.debug('Checker for client %s (command "%s")'
 
192
                      " succeeded", self.properties["Name"], command)
160
193
            self.update()
161
194
            return
162
195
        # 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
196
        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)))
 
197
            log.info('Checker for client %s (command "%s") failed'
 
198
                     " with exit code %d", self.properties["Name"],
 
199
                     command, os.WEXITSTATUS(condition))
173
200
        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')
 
201
            log.info('Checker for client %s (command "%s") was'
 
202
                     " killed by signal %d", self.properties["Name"],
 
203
                     command, os.WTERMSIG(condition))
184
204
        self.update()
185
 
    
 
205
 
186
206
    def checker_started(self, command):
187
 
        #self.logger(u'Client %s started checker "%s"'
188
 
        #            % (self.properties[u"name"], unicode(command)))
189
 
        pass
190
 
    
 
207
        """Server signals that a checker started."""
 
208
        log.debug('Client %s started checker "%s"',
 
209
                  self.properties["Name"], command)
 
210
 
191
211
    def got_secret(self):
192
 
        self.logger(u'Client %s received its secret'
193
 
                    % self.properties[u"name"])
194
 
    
 
212
        log.info("Client %s received its secret",
 
213
                 self.properties["Name"])
 
214
 
195
215
    def need_approval(self, timeout, default):
196
216
        if not default:
197
 
            message = u'Client %s needs approval within %s seconds'
 
217
            message = "Client %s needs approval within %f seconds"
198
218
        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
 
    
 
219
            message = "Client %s will get its secret in %f seconds"
 
220
        log.info(message, self.properties["Name"], timeout/1000)
 
221
 
203
222
    def rejected(self, reason):
204
 
        self.logger(u'Client %s was rejected; reason: %s'
205
 
                    % (self.properties[u"name"], reason))
206
 
    
 
223
        log.info("Client %s was rejected; reason: %s",
 
224
                 self.properties["Name"], reason)
 
225
 
207
226
    def selectable(self):
208
227
        """Make this a "selectable" widget.
209
228
        This overrides the method from urwid.FlowWidget."""
210
229
        return True
211
 
    
212
 
    def rows(self, (maxcol,), focus=False):
 
230
 
 
231
    def rows(self, maxcolrow, focus=False):
213
232
        """How many rows this widget will occupy might depend on
214
233
        whether we have focus or not.
215
234
        This overrides the method from urwid.FlowWidget"""
216
 
        return self.current_widget(focus).rows((maxcol,), focus=focus)
217
 
    
 
235
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
 
236
 
218
237
    def current_widget(self, focus=False):
219
238
        if focus or self.opened:
220
239
            return self._focus_widget
221
240
        return self._widget
222
 
    
 
241
 
223
242
    def update(self):
224
243
        "Called when what is visible on the screen should be updated."
225
244
        # 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
 
                          }
 
245
        with_standout = {"normal": "standout",
 
246
                         "bold": "bold-standout",
 
247
                         "underline-blink":
 
248
                         "underline-blink-standout",
 
249
                         "bold-underline-blink":
 
250
                         "bold-underline-blink-standout",
 
251
                         }
233
252
 
234
253
        # Rebuild focus and non-focus widgets using current properties
235
254
 
236
255
        # 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?"
 
256
        base = "{name}: ".format(name=self.properties["Name"])
 
257
        if not self.properties["Enabled"]:
 
258
            message = "DISABLED"
 
259
            self.using_timer(False)
 
260
        elif self.properties["ApprovalPending"]:
 
261
            timeout = datetime.timedelta(
 
262
                milliseconds=self.properties["ApprovalDelay"])
 
263
            last_approval_request = isoformat_to_datetime(
 
264
                self.properties["LastApprovalRequest"])
 
265
            if last_approval_request is not None:
 
266
                timer = max(timeout - (datetime.datetime.utcnow()
 
267
                                       - last_approval_request),
 
268
                            datetime.timedelta())
 
269
            else:
 
270
                timer = datetime.timedelta()
 
271
            if self.properties["ApprovedByDefault"]:
 
272
                message = "Approval in {}. (d)eny?"
 
273
            else:
 
274
                message = "Denial in {}. (a)pprove?"
 
275
            message = message.format(str(timer).rsplit(".", 1)[0])
 
276
            self.using_timer(True)
 
277
        elif self.properties["LastCheckerStatus"] != 0:
 
278
            # When checker has failed, show timer until client expires
 
279
            expires = self.properties["Expires"]
 
280
            if expires == "":
 
281
                timer = datetime.timedelta(0)
 
282
            else:
 
283
                expires = (datetime.datetime.strptime
 
284
                           (expires, "%Y-%m-%dT%H:%M:%S.%f"))
 
285
                timer = max(expires - datetime.datetime.utcnow(),
 
286
                            datetime.timedelta())
 
287
            message = ("A checker has failed! Time until client"
 
288
                       " gets disabled: {}"
 
289
                       .format(str(timer).rsplit(".", 1)[0]))
 
290
            self.using_timer(True)
256
291
        else:
257
 
            message = u"enabled"
258
 
        self._text = "%s%s" % (base, message)
259
 
            
 
292
            message = "enabled"
 
293
            self.using_timer(False)
 
294
        self._text = "{}{}".format(base, message)
 
295
 
260
296
        if not urwid.supports_unicode():
261
297
            self._text = self._text.encode("ascii", "replace")
262
 
        textlist = [(u"normal", self._text)]
 
298
        textlist = [("normal", self._text)]
263
299
        self._text_widget.set_text(textlist)
264
300
        self._focus_text_widget.set_text([(with_standout[text[0]],
265
301
                                           text[1])
272
308
        # Run update hook, if any
273
309
        if self.update_hook is not None:
274
310
            self.update_hook()
275
 
    
 
311
 
276
312
    def update_timer(self):
277
 
        "called by gobject"
 
313
        """called by GLib. Will indefinitely loop until
 
314
        GLib.source_remove() on tag is called
 
315
        """
278
316
        self.update()
279
317
        return True             # Keep calling this
280
 
    
281
 
    def delete(self):
 
318
 
 
319
    def delete(self, **kwargs):
282
320
        if self._update_timer_callback_tag is not None:
283
 
            gobject.source_remove(self._update_timer_callback_tag)
 
321
            GLib.source_remove(self._update_timer_callback_tag)
284
322
            self._update_timer_callback_tag = None
 
323
        for match in self.match_objects:
 
324
            match.remove()
 
325
        self.match_objects = ()
285
326
        if self.delete_hook is not None:
286
327
            self.delete_hook(self)
287
 
    
288
 
    def render(self, (maxcol,), focus=False):
 
328
        return super(MandosClientWidget, self).delete(**kwargs)
 
329
 
 
330
    def render(self, maxcolrow, focus=False):
289
331
        """Render differently if we have focus.
290
332
        This overrides the method from urwid.FlowWidget"""
291
 
        return self.current_widget(focus).render((maxcol,),
 
333
        return self.current_widget(focus).render(maxcolrow,
292
334
                                                 focus=focus)
293
 
    
294
 
    def keypress(self, (maxcol,), key):
 
335
 
 
336
    def keypress(self, maxcolrow, key):
295
337
        """Handle keys.
296
338
        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":
 
339
        if key == "+":
 
340
            self.proxy.Set(client_interface, "Enabled",
 
341
                           dbus.Boolean(True), ignore_reply=True,
 
342
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
343
        elif key == "-":
 
344
            self.proxy.Set(client_interface, "Enabled", False,
 
345
                           ignore_reply=True,
 
346
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
347
        elif key == "a":
302
348
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
303
 
                               dbus_interface = client_interface)
304
 
        elif key == u"d":
 
349
                               dbus_interface=client_interface,
 
350
                               ignore_reply=True)
 
351
        elif key == "d":
305
352
            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":
 
353
                               dbus_interface=client_interface,
 
354
                               ignore_reply=True)
 
355
        elif key == "R" or key == "_" or key == "ctrl k":
308
356
            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)
 
357
                                                  .object_path,
 
358
                                                  ignore_reply=True)
 
359
        elif key == "s":
 
360
            self.proxy.Set(client_interface, "CheckerRunning",
 
361
                           dbus.Boolean(True), ignore_reply=True,
 
362
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
363
        elif key == "S":
 
364
            self.proxy.Set(client_interface, "CheckerRunning",
 
365
                           dbus.Boolean(False), ignore_reply=True,
 
366
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
367
        elif key == "C":
 
368
            self.proxy.CheckedOK(dbus_interface=client_interface,
 
369
                                 ignore_reply=True)
316
370
        # xxx
317
 
#         elif key == u"p" or key == "=":
 
371
#         elif key == "p" or key == "=":
318
372
#             self.proxy.pause()
319
 
#         elif key == u"u" or key == ":":
 
373
#         elif key == "u" or key == ":":
320
374
#             self.proxy.unpause()
321
 
#         elif key == u"RET":
 
375
#         elif key == "RET":
322
376
#             self.open()
323
 
#        elif key == u"+":
324
 
#            self.proxy.Approve(True)
325
 
#        elif key == u"-":
326
 
#            self.proxy.Approve(False)
327
377
        else:
328
378
            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.
 
379
 
 
380
    def properties_changed(self, interface, properties, invalidated):
 
381
        """Call self.update() if any properties changed.
333
382
        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:
 
383
        old_values = {key: self.properties.get(key)
 
384
                      for key in properties.keys()}
 
385
        super(MandosClientWidget, self).properties_changed(
 
386
            interface, properties, invalidated)
 
387
        if any(old_values[key] != self.properties.get(key)
 
388
               for key in old_values):
339
389
            self.update()
340
390
 
341
391
 
 
392
def glib_safely(func, retval=True):
 
393
    def safe_func(*args, **kwargs):
 
394
        try:
 
395
            return func(*args, **kwargs)
 
396
        except Exception:
 
397
            log.exception("")
 
398
            return retval
 
399
    return safe_func
 
400
 
 
401
 
342
402
class ConstrainedListBox(urwid.ListBox):
343
403
    """Like a normal urwid.ListBox, but will consume all "up" or
344
404
    "down" key presses, thus not allowing any containing widgets to
345
405
    use them as an excuse to shift focus away from this widget.
346
406
    """
347
 
    def keypress(self, (maxcol, maxrow), key):
348
 
        ret = super(ConstrainedListBox, self).keypress((maxcol, maxrow), key)
349
 
        if ret in (u"up", u"down"):
 
407
    def keypress(self, *args, **kwargs):
 
408
        ret = (super(ConstrainedListBox, self)
 
409
               .keypress(*args, **kwargs))
 
410
        if ret in ("up", "down"):
350
411
            return
351
412
        return ret
352
413
 
353
414
 
354
 
class UserInterface(object):
 
415
class UserInterface:
355
416
    """This is the entire user interface - the whole screen
356
417
    with boxes, lists of client widgets, etc.
357
418
    """
358
419
    def __init__(self, max_log_length=1000):
359
420
        DBusGMainLoop(set_as_default=True)
360
 
        
 
421
 
361
422
        self.screen = urwid.curses_display.Screen()
362
 
        
 
423
 
363
424
        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")),
 
425
                ("normal",
 
426
                 "default", "default", None),
 
427
                ("bold",
 
428
                 "bold", "default", "bold"),
 
429
                ("underline-blink",
 
430
                 "underline,blink", "default", "underline,blink"),
 
431
                ("standout",
 
432
                 "standout", "default", "standout"),
 
433
                ("bold-underline-blink",
 
434
                 "bold,underline,blink", "default",
 
435
                 "bold,underline,blink"),
 
436
                ("bold-standout",
 
437
                 "bold,standout", "default", "bold,standout"),
 
438
                ("underline-blink-standout",
 
439
                 "underline,blink,standout", "default",
 
440
                 "underline,blink,standout"),
 
441
                ("bold-underline-blink-standout",
 
442
                 "bold,underline,blink,standout", "default",
 
443
                 "bold,underline,blink,standout"),
381
444
                ))
382
 
        
 
445
 
383
446
        if urwid.supports_unicode():
384
 
            self.divider = u"─" # \u2500
385
 
            #self.divider = u"━" # \u2501
 
447
            self.divider = "─"  # \u2500
386
448
        else:
387
 
            #self.divider = u"-" # \u002d
388
 
            self.divider = u"_" # \u005f
389
 
        
 
449
            self.divider = "_"  # \u005f
 
450
 
390
451
        self.screen.start()
391
 
        
 
452
 
392
453
        self.size = self.screen.get_cols_rows()
393
 
        
 
454
 
394
455
        self.clients = urwid.SimpleListWalker([])
395
456
        self.clients_dict = {}
396
 
        
 
457
 
397
458
        # We will add Text widgets to this list
398
 
        self.log = []
 
459
        self.log = urwid.SimpleListWalker([])
399
460
        self.max_log_length = max_log_length
400
 
        
 
461
 
401
462
        # We keep a reference to the log widget so we can remove it
402
463
        # from the ListWalker without it getting destroyed
403
464
        self.logbox = ConstrainedListBox(self.log)
404
 
        
 
465
 
405
466
        # This keeps track of whether self.uilist currently has
406
467
        # self.logbox in it or not
407
468
        self.log_visible = True
408
 
        self.log_wrap = u"any"
409
 
        
 
469
        self.log_wrap = "any"
 
470
 
 
471
        self.loghandler = UILogHandler(self)
 
472
 
410
473
        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
 
    
 
474
        self.add_log_line(("bold",
 
475
                           "Mandos Monitor version " + version))
 
476
        self.add_log_line(("bold", "q: Quit  ?: Help"))
 
477
 
 
478
        self.busname = domain + ".Mandos"
 
479
        self.main_loop = GLib.MainLoop()
 
480
 
 
481
    def client_not_found(self, key_id, address):
 
482
        log.info("Client with address %s and key ID %s could"
 
483
                 " not be found", address, key_id)
 
484
 
466
485
    def rebuild(self):
467
486
        """This rebuilds the User Interface.
468
487
        Call this when the widget layout needs to change"""
469
488
        self.uilist = []
470
 
        #self.uilist.append(urwid.ListBox(self.clients))
471
 
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.clients),
472
 
                                       #header=urwid.Divider(),
 
489
        # self.uilist.append(urwid.ListBox(self.clients))
 
490
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
 
491
                                                          clients),
 
492
                                       # header=urwid.Divider(),
473
493
                                       header=None,
474
 
                                       footer=urwid.Divider(div_char=self.divider)))
 
494
                                       footer=urwid.Divider(
 
495
                                           div_char=self.divider)))
475
496
        if self.log_visible:
476
497
            self.uilist.append(self.logbox)
477
 
            pass
478
498
        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."""
 
499
 
 
500
    def add_log_line(self, markup):
486
501
        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")
 
502
        if self.max_log_length:
 
503
            if len(self.log) > self.max_log_length:
 
504
                del self.log[0:(len(self.log) - self.max_log_length)]
 
505
        self.logbox.set_focus(len(self.logbox.body.contents)-1,
 
506
                              coming_from="above")
492
507
        self.refresh()
493
 
    
 
508
 
494
509
    def toggle_log_display(self):
495
510
        """Toggle visibility of the log buffer."""
496
511
        self.log_visible = not self.log_visible
497
512
        self.rebuild()
498
 
        self.log_message(u"Log visibility changed to: "
499
 
                         + unicode(self.log_visible))
500
 
    
 
513
        log.debug("Log visibility changed to: %s", self.log_visible)
 
514
 
501
515
    def change_log_display(self):
502
516
        """Change type of log display.
503
517
        Currently, this toggles wrapping of text lines."""
504
 
        if self.log_wrap == u"clip":
505
 
            self.log_wrap = u"any"
 
518
        if self.log_wrap == "clip":
 
519
            self.log_wrap = "any"
506
520
        else:
507
 
            self.log_wrap = u"clip"
 
521
            self.log_wrap = "clip"
508
522
        for textwidget in self.log:
509
523
            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
 
524
        log.debug("Wrap mode: %s", self.log_wrap)
 
525
 
 
526
    def find_and_remove_client(self, path, interfaces):
 
527
        """Find a client by its object path and remove it.
 
528
 
 
529
        This is connected to the InterfacesRemoved signal from the
516
530
        Mandos server object."""
 
531
        if client_interface not in interfaces:
 
532
            # Not a Mandos client object; ignore
 
533
            return
517
534
        try:
518
535
            client = self.clients_dict[path]
519
536
        except KeyError:
520
537
            # not found?
521
 
            return
522
 
        self.remove_client(client, path)
523
 
    
524
 
    def add_new_client(self, path):
 
538
            log.warning("Unknown client %s removed", path)
 
539
            return
 
540
        client.delete()
 
541
 
 
542
    def add_new_client(self, path, ifs_and_props):
 
543
        """Find a client by its object path and remove it.
 
544
 
 
545
        This is connected to the InterfacesAdded signal from the
 
546
        Mandos server object.
 
547
        """
 
548
        if client_interface not in ifs_and_props:
 
549
            # Not a Mandos client object; ignore
 
550
            return
525
551
        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),
 
552
        self.add_client(MandosClientWidget(
 
553
            server_proxy_object=self.mandos_serv,
 
554
            proxy_object=client_proxy_object,
 
555
            update_hook=self.refresh,
 
556
            delete_hook=self.remove_client,
 
557
            properties=dict(ifs_and_props[client_interface])),
536
558
                        path=path)
537
 
    
 
559
 
538
560
    def add_client(self, client, path=None):
539
561
        self.clients.append(client)
540
562
        if path is None:
541
563
            path = client.proxy.object_path
542
564
        self.clients_dict[path] = client
543
 
        self.clients.sort(None, lambda c: c.properties[u"name"])
 
565
        self.clients.sort(key=lambda c: c.properties["Name"])
544
566
        self.refresh()
545
 
    
 
567
 
546
568
    def remove_client(self, client, path=None):
547
569
        self.clients.remove(client)
548
570
        if path is None:
549
571
            path = client.proxy.object_path
550
572
        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
573
        self.refresh()
557
 
    
 
574
 
558
575
    def refresh(self):
559
576
        """Redraw the screen"""
560
577
        canvas = self.topwidget.render(self.size, focus=True)
561
578
        self.screen.draw_screen(self.size, canvas)
562
 
    
 
579
 
563
580
    def run(self):
564
581
        """Start the main loop and exit when it's done."""
 
582
        log.addHandler(self.loghandler)
 
583
        self.orig_log_propagate = log.propagate
 
584
        log.propagate = False
 
585
        self.orig_log_level = log.level
 
586
        log.setLevel("INFO")
 
587
        self.bus = dbus.SystemBus()
 
588
        mandos_dbus_objc = self.bus.get_object(
 
589
            self.busname, "/", follow_name_owner_changes=True)
 
590
        self.mandos_serv = dbus.Interface(
 
591
            mandos_dbus_objc, dbus_interface=server_interface)
 
592
        try:
 
593
            mandos_clients = (self.mandos_serv
 
594
                              .GetAllClientsWithProperties())
 
595
            if not mandos_clients:
 
596
                log.warning("Note: Server has no clients.")
 
597
        except dbus.exceptions.DBusException:
 
598
            log.warning("Note: No Mandos server running.")
 
599
            mandos_clients = dbus.Dictionary()
 
600
 
 
601
        (self.mandos_serv
 
602
         .connect_to_signal("InterfacesRemoved",
 
603
                            self.find_and_remove_client,
 
604
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
 
605
                            byte_arrays=True))
 
606
        (self.mandos_serv
 
607
         .connect_to_signal("InterfacesAdded",
 
608
                            self.add_new_client,
 
609
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
 
610
                            byte_arrays=True))
 
611
        (self.mandos_serv
 
612
         .connect_to_signal("ClientNotFound",
 
613
                            self.client_not_found,
 
614
                            dbus_interface=server_interface,
 
615
                            byte_arrays=True))
 
616
        for path, client in mandos_clients.items():
 
617
            client_proxy_object = self.bus.get_object(self.busname,
 
618
                                                      path)
 
619
            self.add_client(MandosClientWidget(
 
620
                server_proxy_object=self.mandos_serv,
 
621
                proxy_object=client_proxy_object,
 
622
                properties=client,
 
623
                update_hook=self.refresh,
 
624
                delete_hook=self.remove_client),
 
625
                            path=path)
 
626
 
565
627
        self.refresh()
566
 
        self._input_callback_tag = (gobject.io_add_watch
567
 
                                    (sys.stdin.fileno(),
568
 
                                     gobject.IO_IN,
569
 
                                     self.process_input))
 
628
        self._input_callback_tag = (
 
629
            GLib.io_add_watch(
 
630
                GLib.IOChannel.unix_new(sys.stdin.fileno()),
 
631
                GLib.PRIORITY_DEFAULT, GLib.IO_IN,
 
632
                glib_safely(self.process_input)))
570
633
        self.main_loop.run()
571
634
        # Main loop has finished, we should close everything now
572
 
        gobject.source_remove(self._input_callback_tag)
573
 
        self.screen.stop()
574
 
    
 
635
        GLib.source_remove(self._input_callback_tag)
 
636
        with warnings.catch_warnings():
 
637
            warnings.simplefilter("ignore", BytesWarning)
 
638
            self.screen.stop()
 
639
 
575
640
    def stop(self):
576
641
        self.main_loop.quit()
577
 
    
 
642
        log.removeHandler(self.loghandler)
 
643
        log.propagate = self.orig_log_propagate
 
644
 
578
645
    def process_input(self, source, condition):
579
646
        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
 
                         }
 
647
        translations = {"ctrl n": "down",       # Emacs
 
648
                        "ctrl p": "up",         # Emacs
 
649
                        "ctrl v": "page down",  # Emacs
 
650
                        "meta v": "page up",    # Emacs
 
651
                        " ": "page down",       # less
 
652
                        "f": "page down",       # less
 
653
                        "b": "page up",         # less
 
654
                        "j": "down",            # vi
 
655
                        "k": "up",              # vi
 
656
                        }
590
657
        for key in keys:
591
658
            try:
592
659
                key = translations[key]
593
660
            except KeyError:    # :-)
594
661
                pass
595
 
            
596
 
            if key == u"q" or key == u"Q":
 
662
 
 
663
            if key == "q" or key == "Q":
597
664
                self.stop()
598
665
                break
599
 
            elif key == u"window resize":
 
666
            elif key == "window resize":
600
667
                self.size = self.screen.get_cols_rows()
601
668
                self.refresh()
602
 
            elif key == u"\f":  # Ctrl-L
 
669
            elif key == "ctrl l":
 
670
                self.screen.clear()
603
671
                self.refresh()
604
 
            elif key == u"l" or key == u"D":
 
672
            elif key == "l" or key == "D":
605
673
                self.toggle_log_display()
606
674
                self.refresh()
607
 
            elif key == u"w" or key == u"i":
 
675
            elif key == "w" or key == "i":
608
676
                self.change_log_display()
609
677
                self.refresh()
610
 
            elif key == u"?" or key == u"f1" or key == u"esc":
 
678
            elif key == "?" or key == "f1" or key == "esc":
611
679
                if not self.log_visible:
612
680
                    self.log_visible = True
613
681
                    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"))))
 
682
                self.add_log_line(("bold",
 
683
                                   "  ".join(("q: Quit",
 
684
                                              "?: Help",
 
685
                                              "l: Log window toggle",
 
686
                                              "TAB: Switch window",
 
687
                                              "w: Wrap (log lines)",
 
688
                                              "v: Toggle verbose log",
 
689
                                   ))))
 
690
                self.add_log_line(("bold",
 
691
                                   "  ".join(("Clients:",
 
692
                                              "+: Enable",
 
693
                                              "-: Disable",
 
694
                                              "R: Remove",
 
695
                                              "s: Start new checker",
 
696
                                              "S: Stop checker",
 
697
                                              "C: Checker OK",
 
698
                                              "a: Approve",
 
699
                                              "d: Deny",
 
700
                                   ))))
632
701
                self.refresh()
633
 
            elif key == u"tab":
 
702
            elif key == "tab":
634
703
                if self.topwidget.get_focus() is self.logbox:
635
704
                    self.topwidget.set_focus(0)
636
705
                else:
637
706
                    self.topwidget.set_focus(self.logbox)
638
707
                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
 
708
            elif key == "v":
 
709
                if log.level < logging.INFO:
 
710
                    log.setLevel(logging.INFO)
 
711
                    log.info("Verbose mode: Off")
 
712
                else:
 
713
                    log.setLevel(logging.NOTSET)
 
714
                    log.info("Verbose mode: On")
 
715
            # elif (key == "end" or key == "meta >" or key == "G"
 
716
            #       or key == ">"):
 
717
            #     pass            # xxx end-of-buffer
 
718
            # elif (key == "home" or key == "meta <" or key == "g"
 
719
            #       or key == "<"):
 
720
            #     pass            # xxx beginning-of-buffer
 
721
            # elif key == "ctrl e" or key == "$":
 
722
            #     pass            # xxx move-end-of-line
 
723
            # elif key == "ctrl a" or key == "^":
 
724
            #     pass            # xxx move-beginning-of-line
 
725
            # elif key == "ctrl b" or key == "meta (" or key == "h":
 
726
            #     pass            # xxx left
 
727
            # elif key == "ctrl f" or key == "meta )" or key == "l":
 
728
            #     pass            # xxx right
 
729
            # elif key == "a":
 
730
            #     pass            # scroll up log
 
731
            # elif key == "z":
 
732
            #     pass            # scroll down log
657
733
            elif self.topwidget.selectable():
658
734
                self.topwidget.keypress(self.size, key)
659
735
                self.refresh()
660
736
        return True
661
737
 
 
738
 
 
739
class UILogHandler(logging.Handler):
 
740
    def __init__(self, ui, *args, **kwargs):
 
741
        self.ui = ui
 
742
        super(UILogHandler, self).__init__(*args, **kwargs)
 
743
        self.setFormatter(
 
744
            logging.Formatter("%(asctime)s: %(message)s"))
 
745
    def emit(self, record):
 
746
        msg = self.format(record)
 
747
        if record.levelno > logging.INFO:
 
748
            msg = ("bold", msg)
 
749
        self.ui.add_log_line(msg)
 
750
 
 
751
 
662
752
ui = UserInterface()
663
753
try:
664
754
    ui.run()
665
 
except Exception, e:
666
 
    ui.log_message(unicode(e))
667
 
    ui.screen.stop()
 
755
except KeyboardInterrupt:
 
756
    with warnings.catch_warnings():
 
757
        warnings.filterwarnings("ignore", "", BytesWarning)
 
758
        ui.screen.stop()
 
759
except Exception:
 
760
    with warnings.catch_warnings():
 
761
        warnings.filterwarnings("ignore", "", BytesWarning)
 
762
        ui.screen.stop()
668
763
    raise