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  • Committer: teddy at recompile
  • Date: 2020-11-30 16:25:32 UTC
  • mto: This revision was merged to the branch mainline in revision 402.
  • Revision ID: teddy@recompile.se-20201130162532-b73s2tsihw3so6pw
Update Debian Policy version to 4.5.1; no other changes necessary.

* debian/control (Standards-Version): Change to "4.5.1".

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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
    __metaclass__ = type
 
51
    str = unicode
 
52
 
 
53
log = logging.getLogger(os.path.basename(sys.argv[0]))
 
54
logging.basicConfig(level="NOTSET", # Show all messages
 
55
                    format="%(message)s") # Show basic log messages
 
56
 
 
57
logging.captureWarnings(True)   # Show warnings via the logging system
 
58
 
 
59
locale.setlocale(locale.LC_ALL, "")
 
60
 
 
61
logging.getLogger("dbus.proxies").setLevel(logging.CRITICAL)
28
62
 
29
63
# 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)
 
64
domain = "se.recompile"
 
65
server_interface = domain + ".Mandos"
 
66
client_interface = domain + ".Mandos.Client"
 
67
version = "1.8.12"
 
68
 
 
69
try:
 
70
    dbus.OBJECT_MANAGER_IFACE
 
71
except AttributeError:
 
72
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
 
73
 
42
74
 
43
75
def isoformat_to_datetime(iso):
44
76
    "Parse an ISO 8601 date string to a datetime.datetime()"
45
77
    if not iso:
46
78
        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)
 
79
    d, t = iso.split("T", 1)
 
80
    year, month, day = d.split("-", 2)
 
81
    hour, minute, second = t.split(":", 2)
50
82
    second, fraction = divmod(float(second), 1)
51
83
    return datetime.datetime(int(year),
52
84
                             int(month),
53
85
                             int(day),
54
86
                             int(hour),
55
87
                             int(minute),
56
 
                             int(second),           # Whole seconds
57
 
                             int(fraction*1000000)) # Microseconds
58
 
 
59
 
class MandosClientPropertyCache(object):
 
88
                             int(second),            # Whole seconds
 
89
                             int(fraction*1000000))  # Microseconds
 
90
 
 
91
 
 
92
class MandosClientPropertyCache:
60
93
    """This wraps a Mandos Client D-Bus proxy object, caches the
61
94
    properties and calls a hook function when any of them are
62
95
    changed.
63
96
    """
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.
 
97
    def __init__(self, proxy_object=None, properties=None, **kwargs):
 
98
        self.proxy = proxy_object  # Mandos Client proxy object
 
99
        self.properties = dict() if properties is None else properties
 
100
        self.property_changed_match = (
 
101
            self.proxy.connect_to_signal("PropertiesChanged",
 
102
                                         self.properties_changed,
 
103
                                         dbus.PROPERTIES_IFACE,
 
104
                                         byte_arrays=True))
 
105
 
 
106
        if properties is None:
 
107
            self.properties.update(self.proxy.GetAll(
 
108
                client_interface,
 
109
                dbus_interface=dbus.PROPERTIES_IFACE))
 
110
 
 
111
        super(MandosClientPropertyCache, self).__init__(**kwargs)
 
112
 
 
113
    def properties_changed(self, interface, properties, invalidated):
 
114
        """This is called whenever we get a PropertiesChanged signal
 
115
        It updates the changed properties in the "properties" dict.
84
116
        """
85
117
        # Update properties dict with new value
86
 
        self.properties[property] = value
 
118
        if interface == client_interface:
 
119
            self.properties.update(properties)
 
120
 
 
121
    def delete(self):
 
122
        self.property_changed_match.remove()
87
123
 
88
124
 
89
125
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
90
126
    """A Mandos Client which is visible on the screen.
91
127
    """
92
 
    
 
128
 
93
129
    def __init__(self, server_proxy_object=None, update_hook=None,
94
 
                 delete_hook=None, logger=None, *args, **kwargs):
 
130
                 delete_hook=None, **kwargs):
95
131
        # Called on update
96
132
        self.update_hook = update_hook
97
133
        # Called on delete
98
134
        self.delete_hook = delete_hook
99
135
        # Mandos Server proxy object
100
136
        self.server_proxy_object = server_proxy_object
101
 
        # Logger
102
 
        self.logger = logger
103
 
        
 
137
 
104
138
        self._update_timer_callback_tag = None
105
 
        self.last_checker_failed = False
106
 
        
 
139
 
107
140
        # The widget shown normally
108
 
        self._text_widget = urwid.Text(u"")
 
141
        self._text_widget = urwid.Text("")
109
142
        # 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)
 
143
        self._focus_text_widget = urwid.Text("")
 
144
        super(MandosClientWidget, self).__init__(**kwargs)
114
145
        self.update()
115
146
        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
 
    
 
147
 
 
148
        self.match_objects = (
 
149
            self.proxy.connect_to_signal("CheckerCompleted",
 
150
                                         self.checker_completed,
 
151
                                         client_interface,
 
152
                                         byte_arrays=True),
 
153
            self.proxy.connect_to_signal("CheckerStarted",
 
154
                                         self.checker_started,
 
155
                                         client_interface,
 
156
                                         byte_arrays=True),
 
157
            self.proxy.connect_to_signal("GotSecret",
 
158
                                         self.got_secret,
 
159
                                         client_interface,
 
160
                                         byte_arrays=True),
 
161
            self.proxy.connect_to_signal("NeedApproval",
 
162
                                         self.need_approval,
 
163
                                         client_interface,
 
164
                                         byte_arrays=True),
 
165
            self.proxy.connect_to_signal("Rejected",
 
166
                                         self.rejected,
 
167
                                         client_interface,
 
168
                                         byte_arrays=True))
 
169
        log.debug("Created client %s", self.properties["Name"])
 
170
 
 
171
    def using_timer(self, flag):
 
172
        """Call this method with True or False when timer should be
 
173
        activated or deactivated.
 
174
        """
 
175
        if flag and self._update_timer_callback_tag is None:
 
176
            # Will update the shown timer value every second
 
177
            self._update_timer_callback_tag = (
 
178
                GLib.timeout_add(1000,
 
179
                                 glib_safely(self.update_timer)))
 
180
        elif not (flag or self._update_timer_callback_tag is None):
 
181
            GLib.source_remove(self._update_timer_callback_tag)
 
182
            self._update_timer_callback_tag = None
 
183
 
151
184
    def checker_completed(self, exitstatus, condition, command):
152
185
        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))
 
186
            log.debug('Checker for client %s (command "%s")'
 
187
                      " succeeded", self.properties["Name"], command)
160
188
            self.update()
161
189
            return
162
190
        # 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
191
        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)))
 
192
            log.info('Checker for client %s (command "%s") failed'
 
193
                     " with exit code %d", self.properties["Name"],
 
194
                     command, os.WEXITSTATUS(condition))
173
195
        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')
 
196
            log.info('Checker for client %s (command "%s") was'
 
197
                     " killed by signal %d", self.properties["Name"],
 
198
                     command, os.WTERMSIG(condition))
184
199
        self.update()
185
 
    
 
200
 
186
201
    def checker_started(self, command):
187
 
        #self.logger(u'Client %s started checker "%s"'
188
 
        #            % (self.properties[u"name"], unicode(command)))
189
 
        pass
190
 
    
 
202
        """Server signals that a checker started."""
 
203
        log.debug('Client %s started checker "%s"',
 
204
                  self.properties["Name"], command)
 
205
 
191
206
    def got_secret(self):
192
 
        self.logger(u'Client %s received its secret'
193
 
                    % self.properties[u"name"])
194
 
    
 
207
        log.info("Client %s received its secret",
 
208
                 self.properties["Name"])
 
209
 
195
210
    def need_approval(self, timeout, default):
196
211
        if not default:
197
 
            message = u'Client %s needs approval within %s seconds'
 
212
            message = "Client %s needs approval within %f seconds"
198
213
        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
 
    
 
214
            message = "Client %s will get its secret in %f seconds"
 
215
        log.info(message, self.properties["Name"], timeout/1000)
 
216
 
203
217
    def rejected(self, reason):
204
 
        self.logger(u'Client %s was rejected; reason: %s'
205
 
                    % (self.properties[u"name"], reason))
206
 
    
 
218
        log.info("Client %s was rejected; reason: %s",
 
219
                 self.properties["Name"], reason)
 
220
 
207
221
    def selectable(self):
208
222
        """Make this a "selectable" widget.
209
223
        This overrides the method from urwid.FlowWidget."""
210
224
        return True
211
 
    
212
 
    def rows(self, (maxcol,), focus=False):
 
225
 
 
226
    def rows(self, maxcolrow, focus=False):
213
227
        """How many rows this widget will occupy might depend on
214
228
        whether we have focus or not.
215
229
        This overrides the method from urwid.FlowWidget"""
216
 
        return self.current_widget(focus).rows((maxcol,), focus=focus)
217
 
    
 
230
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
 
231
 
218
232
    def current_widget(self, focus=False):
219
233
        if focus or self.opened:
220
234
            return self._focus_widget
221
235
        return self._widget
222
 
    
 
236
 
223
237
    def update(self):
224
238
        "Called when what is visible on the screen should be updated."
225
239
        # 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
 
                          }
 
240
        with_standout = {"normal": "standout",
 
241
                         "bold": "bold-standout",
 
242
                         "underline-blink":
 
243
                         "underline-blink-standout",
 
244
                         "bold-underline-blink":
 
245
                         "bold-underline-blink-standout",
 
246
                         }
233
247
 
234
248
        # Rebuild focus and non-focus widgets using current properties
235
249
 
236
250
        # 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?"
 
251
        base = "{name}: ".format(name=self.properties["Name"])
 
252
        if not self.properties["Enabled"]:
 
253
            message = "DISABLED"
 
254
            self.using_timer(False)
 
255
        elif self.properties["ApprovalPending"]:
 
256
            timeout = datetime.timedelta(
 
257
                milliseconds=self.properties["ApprovalDelay"])
 
258
            last_approval_request = isoformat_to_datetime(
 
259
                self.properties["LastApprovalRequest"])
 
260
            if last_approval_request is not None:
 
261
                timer = max(timeout - (datetime.datetime.utcnow()
 
262
                                       - last_approval_request),
 
263
                            datetime.timedelta())
 
264
            else:
 
265
                timer = datetime.timedelta()
 
266
            if self.properties["ApprovedByDefault"]:
 
267
                message = "Approval in {}. (d)eny?"
 
268
            else:
 
269
                message = "Denial in {}. (a)pprove?"
 
270
            message = message.format(str(timer).rsplit(".", 1)[0])
 
271
            self.using_timer(True)
 
272
        elif self.properties["LastCheckerStatus"] != 0:
 
273
            # When checker has failed, show timer until client expires
 
274
            expires = self.properties["Expires"]
 
275
            if expires == "":
 
276
                timer = datetime.timedelta(0)
 
277
            else:
 
278
                expires = (datetime.datetime.strptime
 
279
                           (expires, "%Y-%m-%dT%H:%M:%S.%f"))
 
280
                timer = max(expires - datetime.datetime.utcnow(),
 
281
                            datetime.timedelta())
 
282
            message = ("A checker has failed! Time until client"
 
283
                       " gets disabled: {}"
 
284
                       .format(str(timer).rsplit(".", 1)[0]))
 
285
            self.using_timer(True)
256
286
        else:
257
 
            message = u"enabled"
258
 
        self._text = "%s%s" % (base, message)
259
 
            
 
287
            message = "enabled"
 
288
            self.using_timer(False)
 
289
        self._text = "{}{}".format(base, message)
 
290
 
260
291
        if not urwid.supports_unicode():
261
292
            self._text = self._text.encode("ascii", "replace")
262
 
        textlist = [(u"normal", self._text)]
 
293
        textlist = [("normal", self._text)]
263
294
        self._text_widget.set_text(textlist)
264
295
        self._focus_text_widget.set_text([(with_standout[text[0]],
265
296
                                           text[1])
272
303
        # Run update hook, if any
273
304
        if self.update_hook is not None:
274
305
            self.update_hook()
275
 
    
 
306
 
276
307
    def update_timer(self):
277
 
        "called by gobject"
 
308
        """called by GLib. Will indefinitely loop until
 
309
        GLib.source_remove() on tag is called
 
310
        """
278
311
        self.update()
279
312
        return True             # Keep calling this
280
 
    
281
 
    def delete(self):
 
313
 
 
314
    def delete(self, **kwargs):
282
315
        if self._update_timer_callback_tag is not None:
283
 
            gobject.source_remove(self._update_timer_callback_tag)
 
316
            GLib.source_remove(self._update_timer_callback_tag)
284
317
            self._update_timer_callback_tag = None
 
318
        for match in self.match_objects:
 
319
            match.remove()
 
320
        self.match_objects = ()
285
321
        if self.delete_hook is not None:
286
322
            self.delete_hook(self)
287
 
    
288
 
    def render(self, (maxcol,), focus=False):
 
323
        return super(MandosClientWidget, self).delete(**kwargs)
 
324
 
 
325
    def render(self, maxcolrow, focus=False):
289
326
        """Render differently if we have focus.
290
327
        This overrides the method from urwid.FlowWidget"""
291
 
        return self.current_widget(focus).render((maxcol,),
 
328
        return self.current_widget(focus).render(maxcolrow,
292
329
                                                 focus=focus)
293
 
    
294
 
    def keypress(self, (maxcol,), key):
 
330
 
 
331
    def keypress(self, maxcolrow, key):
295
332
        """Handle keys.
296
333
        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":
 
334
        if key == "+":
 
335
            self.proxy.Set(client_interface, "Enabled",
 
336
                           dbus.Boolean(True), ignore_reply=True,
 
337
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
338
        elif key == "-":
 
339
            self.proxy.Set(client_interface, "Enabled", False,
 
340
                           ignore_reply=True,
 
341
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
342
        elif key == "a":
302
343
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
303
 
                               dbus_interface = client_interface)
304
 
        elif key == u"d":
 
344
                               dbus_interface=client_interface,
 
345
                               ignore_reply=True)
 
346
        elif key == "d":
305
347
            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":
 
348
                               dbus_interface=client_interface,
 
349
                               ignore_reply=True)
 
350
        elif key == "R" or key == "_" or key == "ctrl k":
308
351
            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)
 
352
                                                  .object_path,
 
353
                                                  ignore_reply=True)
 
354
        elif key == "s":
 
355
            self.proxy.Set(client_interface, "CheckerRunning",
 
356
                           dbus.Boolean(True), ignore_reply=True,
 
357
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
358
        elif key == "S":
 
359
            self.proxy.Set(client_interface, "CheckerRunning",
 
360
                           dbus.Boolean(False), ignore_reply=True,
 
361
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
362
        elif key == "C":
 
363
            self.proxy.CheckedOK(dbus_interface=client_interface,
 
364
                                 ignore_reply=True)
316
365
        # xxx
317
 
#         elif key == u"p" or key == "=":
 
366
#         elif key == "p" or key == "=":
318
367
#             self.proxy.pause()
319
 
#         elif key == u"u" or key == ":":
 
368
#         elif key == "u" or key == ":":
320
369
#             self.proxy.unpause()
321
 
#         elif key == u"RET":
 
370
#         elif key == "RET":
322
371
#             self.open()
323
 
#        elif key == u"+":
324
 
#            self.proxy.Approve(True)
325
 
#        elif key == u"-":
326
 
#            self.proxy.Approve(False)
327
372
        else:
328
373
            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.
 
374
 
 
375
    def properties_changed(self, interface, properties, invalidated):
 
376
        """Call self.update() if any properties changed.
333
377
        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:
 
378
        old_values = {key: self.properties.get(key)
 
379
                      for key in properties.keys()}
 
380
        super(MandosClientWidget, self).properties_changed(
 
381
            interface, properties, invalidated)
 
382
        if any(old_values[key] != self.properties.get(key)
 
383
               for key in old_values):
339
384
            self.update()
340
385
 
341
386
 
 
387
def glib_safely(func, retval=True):
 
388
    def safe_func(*args, **kwargs):
 
389
        try:
 
390
            return func(*args, **kwargs)
 
391
        except Exception:
 
392
            log.exception("")
 
393
            return retval
 
394
    return safe_func
 
395
 
 
396
 
342
397
class ConstrainedListBox(urwid.ListBox):
343
398
    """Like a normal urwid.ListBox, but will consume all "up" or
344
399
    "down" key presses, thus not allowing any containing widgets to
345
400
    use them as an excuse to shift focus away from this widget.
346
401
    """
347
 
    def keypress(self, (maxcol, maxrow), key):
348
 
        ret = super(ConstrainedListBox, self).keypress((maxcol, maxrow), key)
349
 
        if ret in (u"up", u"down"):
 
402
    def keypress(self, *args, **kwargs):
 
403
        ret = (super(ConstrainedListBox, self)
 
404
               .keypress(*args, **kwargs))
 
405
        if ret in ("up", "down"):
350
406
            return
351
407
        return ret
352
408
 
353
409
 
354
 
class UserInterface(object):
 
410
class UserInterface:
355
411
    """This is the entire user interface - the whole screen
356
412
    with boxes, lists of client widgets, etc.
357
413
    """
358
414
    def __init__(self, max_log_length=1000):
359
415
        DBusGMainLoop(set_as_default=True)
360
 
        
 
416
 
361
417
        self.screen = urwid.curses_display.Screen()
362
 
        
 
418
 
363
419
        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")),
 
420
                ("normal",
 
421
                 "default", "default", None),
 
422
                ("bold",
 
423
                 "bold", "default", "bold"),
 
424
                ("underline-blink",
 
425
                 "underline,blink", "default", "underline,blink"),
 
426
                ("standout",
 
427
                 "standout", "default", "standout"),
 
428
                ("bold-underline-blink",
 
429
                 "bold,underline,blink", "default",
 
430
                 "bold,underline,blink"),
 
431
                ("bold-standout",
 
432
                 "bold,standout", "default", "bold,standout"),
 
433
                ("underline-blink-standout",
 
434
                 "underline,blink,standout", "default",
 
435
                 "underline,blink,standout"),
 
436
                ("bold-underline-blink-standout",
 
437
                 "bold,underline,blink,standout", "default",
 
438
                 "bold,underline,blink,standout"),
381
439
                ))
382
 
        
 
440
 
383
441
        if urwid.supports_unicode():
384
 
            self.divider = u"─" # \u2500
385
 
            #self.divider = u"━" # \u2501
 
442
            self.divider = "─"  # \u2500
386
443
        else:
387
 
            #self.divider = u"-" # \u002d
388
 
            self.divider = u"_" # \u005f
389
 
        
 
444
            self.divider = "_"  # \u005f
 
445
 
390
446
        self.screen.start()
391
 
        
 
447
 
392
448
        self.size = self.screen.get_cols_rows()
393
 
        
 
449
 
394
450
        self.clients = urwid.SimpleListWalker([])
395
451
        self.clients_dict = {}
396
 
        
 
452
 
397
453
        # We will add Text widgets to this list
398
 
        self.log = []
 
454
        self.log = urwid.SimpleListWalker([])
399
455
        self.max_log_length = max_log_length
400
 
        
 
456
 
401
457
        # We keep a reference to the log widget so we can remove it
402
458
        # from the ListWalker without it getting destroyed
403
459
        self.logbox = ConstrainedListBox(self.log)
404
 
        
 
460
 
405
461
        # This keeps track of whether self.uilist currently has
406
462
        # self.logbox in it or not
407
463
        self.log_visible = True
408
 
        self.log_wrap = u"any"
409
 
        
 
464
        self.log_wrap = "any"
 
465
 
 
466
        self.loghandler = UILogHandler(self)
 
467
 
410
468
        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
 
    
 
469
        self.add_log_line(("bold",
 
470
                           "Mandos Monitor version " + version))
 
471
        self.add_log_line(("bold", "q: Quit  ?: Help"))
 
472
 
 
473
        self.busname = domain + ".Mandos"
 
474
        self.main_loop = GLib.MainLoop()
 
475
 
 
476
    def client_not_found(self, key_id, address):
 
477
        log.info("Client with address %s and key ID %s could"
 
478
                 " not be found", address, key_id)
 
479
 
466
480
    def rebuild(self):
467
481
        """This rebuilds the User Interface.
468
482
        Call this when the widget layout needs to change"""
469
483
        self.uilist = []
470
 
        #self.uilist.append(urwid.ListBox(self.clients))
471
 
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.clients),
472
 
                                       #header=urwid.Divider(),
 
484
        # self.uilist.append(urwid.ListBox(self.clients))
 
485
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
 
486
                                                          clients),
 
487
                                       # header=urwid.Divider(),
473
488
                                       header=None,
474
 
                                       footer=urwid.Divider(div_char=self.divider)))
 
489
                                       footer=urwid.Divider(
 
490
                                           div_char=self.divider)))
475
491
        if self.log_visible:
476
492
            self.uilist.append(self.logbox)
477
 
            pass
478
493
        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."""
 
494
 
 
495
    def add_log_line(self, markup):
486
496
        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")
 
497
        if self.max_log_length:
 
498
            if len(self.log) > self.max_log_length:
 
499
                del self.log[0:(len(self.log) - self.max_log_length)]
 
500
        self.logbox.set_focus(len(self.logbox.body.contents)-1,
 
501
                              coming_from="above")
492
502
        self.refresh()
493
 
    
 
503
 
494
504
    def toggle_log_display(self):
495
505
        """Toggle visibility of the log buffer."""
496
506
        self.log_visible = not self.log_visible
497
507
        self.rebuild()
498
 
        self.log_message(u"Log visibility changed to: "
499
 
                         + unicode(self.log_visible))
500
 
    
 
508
        log.debug("Log visibility changed to: %s", self.log_visible)
 
509
 
501
510
    def change_log_display(self):
502
511
        """Change type of log display.
503
512
        Currently, this toggles wrapping of text lines."""
504
 
        if self.log_wrap == u"clip":
505
 
            self.log_wrap = u"any"
 
513
        if self.log_wrap == "clip":
 
514
            self.log_wrap = "any"
506
515
        else:
507
 
            self.log_wrap = u"clip"
 
516
            self.log_wrap = "clip"
508
517
        for textwidget in self.log:
509
518
            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
 
519
        log.debug("Wrap mode: %s", self.log_wrap)
 
520
 
 
521
    def find_and_remove_client(self, path, interfaces):
 
522
        """Find a client by its object path and remove it.
 
523
 
 
524
        This is connected to the InterfacesRemoved signal from the
516
525
        Mandos server object."""
 
526
        if client_interface not in interfaces:
 
527
            # Not a Mandos client object; ignore
 
528
            return
517
529
        try:
518
530
            client = self.clients_dict[path]
519
531
        except KeyError:
520
532
            # not found?
521
 
            return
522
 
        self.remove_client(client, path)
523
 
    
524
 
    def add_new_client(self, path):
 
533
            log.warning("Unknown client %s removed", path)
 
534
            return
 
535
        client.delete()
 
536
 
 
537
    def add_new_client(self, path, ifs_and_props):
 
538
        """Find a client by its object path and remove it.
 
539
 
 
540
        This is connected to the InterfacesAdded signal from the
 
541
        Mandos server object.
 
542
        """
 
543
        if client_interface not in ifs_and_props:
 
544
            # Not a Mandos client object; ignore
 
545
            return
525
546
        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),
 
547
        self.add_client(MandosClientWidget(
 
548
            server_proxy_object=self.mandos_serv,
 
549
            proxy_object=client_proxy_object,
 
550
            update_hook=self.refresh,
 
551
            delete_hook=self.remove_client,
 
552
            properties=dict(ifs_and_props[client_interface])),
536
553
                        path=path)
537
 
    
 
554
 
538
555
    def add_client(self, client, path=None):
539
556
        self.clients.append(client)
540
557
        if path is None:
541
558
            path = client.proxy.object_path
542
559
        self.clients_dict[path] = client
543
 
        self.clients.sort(None, lambda c: c.properties[u"name"])
 
560
        self.clients.sort(key=lambda c: c.properties["Name"])
544
561
        self.refresh()
545
 
    
 
562
 
546
563
    def remove_client(self, client, path=None):
547
564
        self.clients.remove(client)
548
565
        if path is None:
549
566
            path = client.proxy.object_path
550
567
        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
568
        self.refresh()
557
 
    
 
569
 
558
570
    def refresh(self):
559
571
        """Redraw the screen"""
560
572
        canvas = self.topwidget.render(self.size, focus=True)
561
573
        self.screen.draw_screen(self.size, canvas)
562
 
    
 
574
 
563
575
    def run(self):
564
576
        """Start the main loop and exit when it's done."""
 
577
        log.addHandler(self.loghandler)
 
578
        self.orig_log_propagate = log.propagate
 
579
        log.propagate = False
 
580
        self.orig_log_level = log.level
 
581
        log.setLevel("INFO")
 
582
        self.bus = dbus.SystemBus()
 
583
        mandos_dbus_objc = self.bus.get_object(
 
584
            self.busname, "/", follow_name_owner_changes=True)
 
585
        self.mandos_serv = dbus.Interface(
 
586
            mandos_dbus_objc, dbus_interface=server_interface)
 
587
        try:
 
588
            mandos_clients = (self.mandos_serv
 
589
                              .GetAllClientsWithProperties())
 
590
            if not mandos_clients:
 
591
                log.warning("Note: Server has no clients.")
 
592
        except dbus.exceptions.DBusException:
 
593
            log.warning("Note: No Mandos server running.")
 
594
            mandos_clients = dbus.Dictionary()
 
595
 
 
596
        (self.mandos_serv
 
597
         .connect_to_signal("InterfacesRemoved",
 
598
                            self.find_and_remove_client,
 
599
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
 
600
                            byte_arrays=True))
 
601
        (self.mandos_serv
 
602
         .connect_to_signal("InterfacesAdded",
 
603
                            self.add_new_client,
 
604
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
 
605
                            byte_arrays=True))
 
606
        (self.mandos_serv
 
607
         .connect_to_signal("ClientNotFound",
 
608
                            self.client_not_found,
 
609
                            dbus_interface=server_interface,
 
610
                            byte_arrays=True))
 
611
        for path, client in mandos_clients.items():
 
612
            client_proxy_object = self.bus.get_object(self.busname,
 
613
                                                      path)
 
614
            self.add_client(MandosClientWidget(
 
615
                server_proxy_object=self.mandos_serv,
 
616
                proxy_object=client_proxy_object,
 
617
                properties=client,
 
618
                update_hook=self.refresh,
 
619
                delete_hook=self.remove_client),
 
620
                            path=path)
 
621
 
565
622
        self.refresh()
566
 
        self._input_callback_tag = (gobject.io_add_watch
567
 
                                    (sys.stdin.fileno(),
568
 
                                     gobject.IO_IN,
569
 
                                     self.process_input))
 
623
        self._input_callback_tag = (
 
624
            GLib.io_add_watch(
 
625
                GLib.IOChannel.unix_new(sys.stdin.fileno()),
 
626
                GLib.PRIORITY_DEFAULT, GLib.IO_IN,
 
627
                glib_safely(self.process_input)))
570
628
        self.main_loop.run()
571
629
        # Main loop has finished, we should close everything now
572
 
        gobject.source_remove(self._input_callback_tag)
573
 
        self.screen.stop()
574
 
    
 
630
        GLib.source_remove(self._input_callback_tag)
 
631
        with warnings.catch_warnings():
 
632
            warnings.simplefilter("ignore", BytesWarning)
 
633
            self.screen.stop()
 
634
 
575
635
    def stop(self):
576
636
        self.main_loop.quit()
577
 
    
 
637
        log.removeHandler(self.loghandler)
 
638
        log.propagate = self.orig_log_propagate
 
639
 
578
640
    def process_input(self, source, condition):
579
641
        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
 
                         }
 
642
        translations = {"ctrl n": "down",       # Emacs
 
643
                        "ctrl p": "up",         # Emacs
 
644
                        "ctrl v": "page down",  # Emacs
 
645
                        "meta v": "page up",    # Emacs
 
646
                        " ": "page down",       # less
 
647
                        "f": "page down",       # less
 
648
                        "b": "page up",         # less
 
649
                        "j": "down",            # vi
 
650
                        "k": "up",              # vi
 
651
                        }
590
652
        for key in keys:
591
653
            try:
592
654
                key = translations[key]
593
655
            except KeyError:    # :-)
594
656
                pass
595
 
            
596
 
            if key == u"q" or key == u"Q":
 
657
 
 
658
            if key == "q" or key == "Q":
597
659
                self.stop()
598
660
                break
599
 
            elif key == u"window resize":
 
661
            elif key == "window resize":
600
662
                self.size = self.screen.get_cols_rows()
601
663
                self.refresh()
602
 
            elif key == u"\f":  # Ctrl-L
 
664
            elif key == "ctrl l":
 
665
                self.screen.clear()
603
666
                self.refresh()
604
 
            elif key == u"l" or key == u"D":
 
667
            elif key == "l" or key == "D":
605
668
                self.toggle_log_display()
606
669
                self.refresh()
607
 
            elif key == u"w" or key == u"i":
 
670
            elif key == "w" or key == "i":
608
671
                self.change_log_display()
609
672
                self.refresh()
610
 
            elif key == u"?" or key == u"f1" or key == u"esc":
 
673
            elif key == "?" or key == "f1" or key == "esc":
611
674
                if not self.log_visible:
612
675
                    self.log_visible = True
613
676
                    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"))))
 
677
                self.add_log_line(("bold",
 
678
                                   "  ".join(("q: Quit",
 
679
                                              "?: Help",
 
680
                                              "l: Log window toggle",
 
681
                                              "TAB: Switch window",
 
682
                                              "w: Wrap (log lines)",
 
683
                                              "v: Toggle verbose log",
 
684
                                   ))))
 
685
                self.add_log_line(("bold",
 
686
                                   "  ".join(("Clients:",
 
687
                                              "+: Enable",
 
688
                                              "-: Disable",
 
689
                                              "R: Remove",
 
690
                                              "s: Start new checker",
 
691
                                              "S: Stop checker",
 
692
                                              "C: Checker OK",
 
693
                                              "a: Approve",
 
694
                                              "d: Deny",
 
695
                                   ))))
632
696
                self.refresh()
633
 
            elif key == u"tab":
 
697
            elif key == "tab":
634
698
                if self.topwidget.get_focus() is self.logbox:
635
699
                    self.topwidget.set_focus(0)
636
700
                else:
637
701
                    self.topwidget.set_focus(self.logbox)
638
702
                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
 
703
            elif key == "v":
 
704
                if log.level < logging.INFO:
 
705
                    log.setLevel(logging.INFO)
 
706
                    log.info("Verbose mode: Off")
 
707
                else:
 
708
                    log.setLevel(logging.NOTSET)
 
709
                    log.info("Verbose mode: On")
 
710
            # elif (key == "end" or key == "meta >" or key == "G"
 
711
            #       or key == ">"):
 
712
            #     pass            # xxx end-of-buffer
 
713
            # elif (key == "home" or key == "meta <" or key == "g"
 
714
            #       or key == "<"):
 
715
            #     pass            # xxx beginning-of-buffer
 
716
            # elif key == "ctrl e" or key == "$":
 
717
            #     pass            # xxx move-end-of-line
 
718
            # elif key == "ctrl a" or key == "^":
 
719
            #     pass            # xxx move-beginning-of-line
 
720
            # elif key == "ctrl b" or key == "meta (" or key == "h":
 
721
            #     pass            # xxx left
 
722
            # elif key == "ctrl f" or key == "meta )" or key == "l":
 
723
            #     pass            # xxx right
 
724
            # elif key == "a":
 
725
            #     pass            # scroll up log
 
726
            # elif key == "z":
 
727
            #     pass            # scroll down log
657
728
            elif self.topwidget.selectable():
658
729
                self.topwidget.keypress(self.size, key)
659
730
                self.refresh()
660
731
        return True
661
732
 
 
733
 
 
734
class UILogHandler(logging.Handler):
 
735
    def __init__(self, ui, *args, **kwargs):
 
736
        self.ui = ui
 
737
        super(UILogHandler, self).__init__(*args, **kwargs)
 
738
        self.setFormatter(
 
739
            logging.Formatter("%(asctime)s: %(message)s"))
 
740
    def emit(self, record):
 
741
        msg = self.format(record)
 
742
        if record.levelno > logging.INFO:
 
743
            msg = ("bold", msg)
 
744
        self.ui.add_log_line(msg)
 
745
 
 
746
 
662
747
ui = UserInterface()
663
748
try:
664
749
    ui.run()
665
 
except Exception, e:
666
 
    ui.log_message(unicode(e))
667
 
    ui.screen.stop()
 
750
except KeyboardInterrupt:
 
751
    with warnings.catch_warnings():
 
752
        warnings.filterwarnings("ignore", "", BytesWarning)
 
753
        ui.screen.stop()
 
754
except Exception:
 
755
    with warnings.catch_warnings():
 
756
        warnings.filterwarnings("ignore", "", BytesWarning)
 
757
        ui.screen.stop()
668
758
    raise