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Viewing changes to mandos-monitor

Documentation changes:

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

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

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

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

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