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* mandos-monitor: New prototype version of interactive server
                  administraton tool using D-Bus.

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#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
 
4
 
# Mandos Monitor - Control and monitor the Mandos server
5
 
6
 
# Copyright © 2009-2012 Teddy Hogeborn
7
 
# Copyright © 2009-2012 Björn Påhlsson
8
 
9
 
# This program is free software: you can redistribute it and/or modify
10
 
# it under the terms of the GNU General Public License as published by
11
 
# the Free Software Foundation, either version 3 of the License, or
12
 
# (at your option) any later version.
13
 
#
14
 
#     This program is distributed in the hope that it will be useful,
15
 
#     but WITHOUT ANY WARRANTY; without even the implied warranty of
16
 
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17
 
#     GNU General Public License for more details.
18
 
19
 
# You should have received a copy of the GNU General Public License
20
 
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
21
 
22
 
# Contact the authors at <mandos@recompile.se>.
23
 
24
3
 
25
 
from __future__ import (division, absolute_import, print_function,
26
 
                        unicode_literals)
 
4
from __future__ import division, absolute_import, with_statement
27
5
 
28
6
import sys
29
 
import os
30
7
import signal
31
8
 
32
 
import datetime
33
 
 
34
9
import urwid.curses_display
35
10
import urwid
36
11
 
41
16
 
42
17
import UserList
43
18
 
44
 
import locale
45
 
 
46
 
locale.setlocale(locale.LC_ALL, '')
47
 
 
48
 
import logging
49
 
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
50
 
 
51
19
# Some useful constants
52
 
domain = 'se.recompile'
 
20
domain = 'se.bsnet.fukt'
53
21
server_interface = domain + '.Mandos'
54
22
client_interface = domain + '.Mandos.Client'
55
 
version = "1.5.1"
 
23
version = "1.0.14"
56
24
 
57
25
# Always run in monochrome mode
58
26
urwid.curses_display.curses.has_colors = lambda : False
62
30
urwid.curses_display.curses.A_UNDERLINE |= (
63
31
    urwid.curses_display.curses.A_BLINK)
64
32
 
65
 
def isoformat_to_datetime(iso):
66
 
    "Parse an ISO 8601 date string to a datetime.datetime()"
67
 
    if not iso:
68
 
        return None
69
 
    d, t = iso.split("T", 1)
70
 
    year, month, day = d.split("-", 2)
71
 
    hour, minute, second = t.split(":", 2)
72
 
    second, fraction = divmod(float(second), 1)
73
 
    return datetime.datetime(int(year),
74
 
                             int(month),
75
 
                             int(day),
76
 
                             int(hour),
77
 
                             int(minute),
78
 
                             int(second),           # Whole seconds
79
 
                             int(fraction*1000000)) # Microseconds
80
 
 
81
33
class MandosClientPropertyCache(object):
82
34
    """This wraps a Mandos Client D-Bus proxy object, caches the
83
35
    properties and calls a hook function when any of them are
84
36
    changed.
85
37
    """
86
 
    def __init__(self, proxy_object=None, *args, **kwargs):
 
38
    def __init__(self, proxy_object=None, properties=None, *args,
 
39
                 **kwargs):
 
40
        # Type conversion mapping
 
41
        self.type_map = {
 
42
            dbus.ObjectPath: unicode,
 
43
            dbus.ByteArray: str,
 
44
            dbus.Signature: unicode,
 
45
            dbus.Byte: chr,
 
46
            dbus.Int16: int,
 
47
            dbus.UInt16: int,
 
48
            dbus.Int32: int,
 
49
            dbus.UInt32: int,
 
50
            dbus.Int64: int,
 
51
            dbus.UInt64: int,
 
52
            dbus.Dictionary: dict,
 
53
            dbus.Array: list,
 
54
            dbus.String: unicode,
 
55
            dbus.Boolean: bool,
 
56
            dbus.Double: float,
 
57
            dbus.Struct: tuple,
 
58
            }
87
59
        self.proxy = proxy_object # Mandos Client proxy object
88
60
        
89
 
        self.properties = dict()
90
 
        self.property_changed_match = (
91
 
            self.proxy.connect_to_signal("PropertyChanged",
92
 
                                         self.property_changed,
93
 
                                         client_interface,
94
 
                                         byte_arrays=True))
 
61
        if properties is None:
 
62
            self.properties = dict()
 
63
        else:
 
64
            self.properties = dict(self.convert_property(prop, val)
 
65
                                   for prop, val in
 
66
                                   properties.iteritems())
 
67
        self.proxy.connect_to_signal("PropertyChanged",
 
68
                                     self.property_changed,
 
69
                                     client_interface,
 
70
                                     byte_arrays=True)
95
71
        
96
 
        self.properties.update(
97
 
            self.proxy.GetAll(client_interface,
98
 
                              dbus_interface = dbus.PROPERTIES_IFACE))
99
 
 
100
 
        #XXX This breaks good super behaviour
101
 
#        super(MandosClientPropertyCache, self).__init__(
102
 
#            *args, **kwargs)
 
72
        if properties is None:
 
73
            self.properties.update(
 
74
                self.convert_property(prop, val)
 
75
                for prop, val in
 
76
                self.proxy.GetAll(client_interface,
 
77
                                  dbus_interface =
 
78
                                  dbus.PROPERTIES_IFACE).iteritems())
 
79
        super(MandosClientPropertyCache, self).__init__(
 
80
            proxy_object=proxy_object,
 
81
            properties=properties, *args, **kwargs)
103
82
    
 
83
    def convert_property(self, property, value):
 
84
        """This converts the arguments from a D-Bus signal, which are
 
85
        D-Bus types, into normal Python types, using a conversion
 
86
        function from "self.type_map".
 
87
        """
 
88
        property_name = unicode(property) # Always a dbus.String
 
89
        if isinstance(value, dbus.UTF8String):
 
90
            # Should not happen, but prepare for it anyway
 
91
            value = dbus.String(str(value).decode("utf-8"))
 
92
        try:
 
93
            convfunc = self.type_map[type(value)]
 
94
        except KeyError:
 
95
            # Unknown type, return unmodified
 
96
            return property_name, value
 
97
        return property_name, convfunc(value)
104
98
    def property_changed(self, property=None, value=None):
105
99
        """This is called whenever we get a PropertyChanged signal
106
100
        It updates the changed property in the "properties" dict.
107
101
        """
 
102
        # Convert name and value
 
103
        property_name, cvalue = self.convert_property(property, value)
108
104
        # Update properties dict with new value
109
 
        self.properties[property] = value
110
 
    
111
 
    def delete(self, *args, **kwargs):
112
 
        self.property_changed_match.remove()
113
 
        super(MandosClientPropertyCache, self).__init__(
114
 
            *args, **kwargs)
 
105
        self.properties[property_name] = cvalue
115
106
 
116
107
 
117
108
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
119
110
    """
120
111
    
121
112
    def __init__(self, server_proxy_object=None, update_hook=None,
122
 
                 delete_hook=None, logger=None, *args, **kwargs):
 
113
                 delete_hook=None, *args, **kwargs):
123
114
        # Called on update
124
115
        self.update_hook = update_hook
125
116
        # Called on delete
126
117
        self.delete_hook = delete_hook
127
118
        # Mandos Server proxy object
128
119
        self.server_proxy_object = server_proxy_object
129
 
        # Logger
130
 
        self.logger = logger
131
 
        
132
 
        self._update_timer_callback_tag = None
133
 
        self._update_timer_callback_lock = 0
134
 
        self.last_checker_failed = False
135
120
        
136
121
        # The widget shown normally
137
122
        self._text_widget = urwid.Text("")
142
127
            *args, **kwargs)
143
128
        self.update()
144
129
        self.opened = False
145
 
        
146
 
        last_checked_ok = isoformat_to_datetime(self.properties
147
 
                                                ["LastCheckedOK"])
148
 
        if last_checked_ok is None:
149
 
            self.last_checker_failed = True
150
 
        else:
151
 
            self.last_checker_failed = ((datetime.datetime.utcnow()
152
 
                                         - last_checked_ok)
153
 
                                        > datetime.timedelta
154
 
                                        (milliseconds=
155
 
                                         self.properties
156
 
                                         ["Interval"]))
157
 
        
158
 
        if self.last_checker_failed:
159
 
            self.using_timer(True)
160
 
        
161
 
        if self.need_approval:
162
 
            self.using_timer(True)
163
 
        
164
 
        self.match_objects = (
165
 
            self.proxy.connect_to_signal("CheckerCompleted",
166
 
                                         self.checker_completed,
167
 
                                         client_interface,
168
 
                                         byte_arrays=True),
169
 
            self.proxy.connect_to_signal("CheckerStarted",
170
 
                                         self.checker_started,
171
 
                                         client_interface,
172
 
                                         byte_arrays=True),
173
 
            self.proxy.connect_to_signal("GotSecret",
174
 
                                         self.got_secret,
175
 
                                         client_interface,
176
 
                                         byte_arrays=True),
177
 
            self.proxy.connect_to_signal("NeedApproval",
178
 
                                         self.need_approval,
179
 
                                         client_interface,
180
 
                                         byte_arrays=True),
181
 
            self.proxy.connect_to_signal("Rejected",
182
 
                                         self.rejected,
183
 
                                         client_interface,
184
 
                                         byte_arrays=True))
185
 
        #self.logger('Created client %s' % (self.properties["Name"]))
186
 
    
187
 
    def property_changed(self, property=None, value=None):
188
 
        super(self, MandosClientWidget).property_changed(property,
189
 
                                                         value)
190
 
        if property == "ApprovalPending":
191
 
            using_timer(bool(value))
192
 
        
193
 
    def using_timer(self, flag):
194
 
        """Call this method with True or False when timer should be
195
 
        activated or deactivated.
196
 
        """
197
 
        old = self._update_timer_callback_lock
198
 
        if flag:
199
 
            self._update_timer_callback_lock += 1
200
 
        else:
201
 
            self._update_timer_callback_lock -= 1
202
 
        if old == 0 and self._update_timer_callback_lock:
203
 
            # Will update the shown timer value every second
204
 
            self._update_timer_callback_tag = (gobject.timeout_add
205
 
                                               (1000,
206
 
                                                self.update_timer))
207
 
        elif old and self._update_timer_callback_lock == 0:
208
 
            gobject.source_remove(self._update_timer_callback_tag)
209
 
            self._update_timer_callback_tag = None
210
 
    
211
 
    def checker_completed(self, exitstatus, condition, command):
212
 
        if exitstatus == 0:
213
 
            if self.last_checker_failed:
214
 
                self.last_checker_failed = False
215
 
                self.using_timer(False)
216
 
            #self.logger('Checker for client %s (command "%s")'
217
 
            #            ' was successful'
218
 
            #            % (self.properties["Name"], command))
219
 
            self.update()
220
 
            return
221
 
        # Checker failed
222
 
        if not self.last_checker_failed:
223
 
            self.last_checker_failed = True
224
 
            self.using_timer(True)
225
 
        if os.WIFEXITED(condition):
226
 
            self.logger('Checker for client %s (command "%s")'
227
 
                        ' failed with exit code %s'
228
 
                        % (self.properties["Name"], command,
229
 
                           os.WEXITSTATUS(condition)))
230
 
        elif os.WIFSIGNALED(condition):
231
 
            self.logger('Checker for client %s (command "%s")'
232
 
                        ' was killed by signal %s'
233
 
                        % (self.properties["Name"], command,
234
 
                           os.WTERMSIG(condition)))
235
 
        elif os.WCOREDUMP(condition):
236
 
            self.logger('Checker for client %s (command "%s")'
237
 
                        ' dumped core'
238
 
                        % (self.properties["Name"], command))
239
 
        else:
240
 
            self.logger('Checker for client %s completed'
241
 
                        ' mysteriously')
242
 
        self.update()
243
 
    
244
 
    def checker_started(self, command):
245
 
        """Server signals that a checker started. This could be useful
246
 
           to log in the future. """
247
 
        #self.logger('Client %s started checker "%s"'
248
 
        #            % (self.properties["Name"], unicode(command)))
249
 
        pass
250
 
    
251
 
    def got_secret(self):
252
 
        self.last_checker_failed = False
253
 
        self.logger('Client %s received its secret'
254
 
                    % self.properties["Name"])
255
 
    
256
 
    def need_approval(self, timeout, default):
257
 
        if not default:
258
 
            message = 'Client %s needs approval within %s seconds'
259
 
        else:
260
 
            message = 'Client %s will get its secret in %s seconds'
261
 
        self.logger(message
262
 
                    % (self.properties["Name"], timeout/1000))
263
 
        self.using_timer(True)
264
 
    
265
 
    def rejected(self, reason):
266
 
        self.logger('Client %s was rejected; reason: %s'
267
 
                    % (self.properties["Name"], reason))
268
130
    
269
131
    def selectable(self):
270
132
        """Make this a "selectable" widget.
271
133
        This overrides the method from urwid.FlowWidget."""
272
134
        return True
273
135
    
274
 
    def rows(self, maxcolrow, focus=False):
 
136
    def rows(self, (maxcol,), focus=False):
275
137
        """How many rows this widget will occupy might depend on
276
138
        whether we have focus or not.
277
139
        This overrides the method from urwid.FlowWidget"""
278
 
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
 
140
        return self.current_widget(focus).rows((maxcol,), focus=focus)
279
141
    
280
142
    def current_widget(self, focus=False):
281
143
        if focus or self.opened:
285
147
    def update(self):
286
148
        "Called when what is visible on the screen should be updated."
287
149
        # How to add standout mode to a style
288
 
        with_standout = { "normal": "standout",
289
 
                          "bold": "bold-standout",
290
 
                          "underline-blink":
291
 
                              "underline-blink-standout",
292
 
                          "bold-underline-blink":
293
 
                              "bold-underline-blink-standout",
 
150
        with_standout = { u"normal": u"standout",
 
151
                          u"bold": u"bold-standout",
 
152
                          u"underline-blink":
 
153
                              u"underline-blink-standout",
 
154
                          u"bold-underline-blink":
 
155
                              u"bold-underline-blink-standout",
294
156
                          }
295
 
 
 
157
        
296
158
        # Rebuild focus and non-focus widgets using current properties
297
 
 
298
 
        # Base part of a client. Name!
299
 
        base = ('%(name)s: '
300
 
                      % {"name": self.properties["Name"]})
301
 
        if not self.properties["Enabled"]:
302
 
            message = "DISABLED"
303
 
        elif self.properties["ApprovalPending"]:
304
 
            timeout = datetime.timedelta(milliseconds
305
 
                                         = self.properties
306
 
                                         ["ApprovalDelay"])
307
 
            last_approval_request = isoformat_to_datetime(
308
 
                self.properties["LastApprovalRequest"])
309
 
            if last_approval_request is not None:
310
 
                timer = timeout - (datetime.datetime.utcnow()
311
 
                                   - last_approval_request)
312
 
            else:
313
 
                timer = datetime.timedelta()
314
 
            if self.properties["ApprovedByDefault"]:
315
 
                message = "Approval in %s. (d)eny?"
316
 
            else:
317
 
                message = "Denial in %s. (a)pprove?"
318
 
            message = message % unicode(timer).rsplit(".", 1)[0]
319
 
        elif self.last_checker_failed:
320
 
            # When checker has failed, print a timer until client expires
321
 
            expires = self.properties["Expires"]
322
 
            if expires == "":
323
 
                timer = datetime.timedelta(0)
324
 
            else:
325
 
                expires = datetime.datetime.strptime(expires,
326
 
                                                     '%Y-%m-%dT%H:%M:%S.%f')
327
 
                timer = expires - datetime.datetime.utcnow()
328
 
            message = ('A checker has failed! Time until client'
329
 
                       ' gets disabled: %s'
330
 
                           % unicode(timer).rsplit(".", 1)[0])
331
 
        else:
332
 
            message = "enabled"
333
 
        self._text = "%s%s" % (base, message)
334
 
            
 
159
        self._text = (u'name="%(name)s", enabled=%(enabled)s'
 
160
                      % self.properties)
335
161
        if not urwid.supports_unicode():
336
162
            self._text = self._text.encode("ascii", "replace")
337
 
        textlist = [("normal", self._text)]
 
163
        textlist = [(u"normal", u"BLÄRGH: "), (u"bold", self._text)]
338
164
        self._text_widget.set_text(textlist)
339
165
        self._focus_text_widget.set_text([(with_standout[text[0]],
340
166
                                           text[1])
348
174
        if self.update_hook is not None:
349
175
            self.update_hook()
350
176
    
351
 
    def update_timer(self):
352
 
        """called by gobject. Will indefinitely loop until
353
 
        gobject.source_remove() on tag is called"""
354
 
        self.update()
355
 
        return True             # Keep calling this
356
 
    
357
 
    def delete(self, *args, **kwargs):
358
 
        if self._update_timer_callback_tag is not None:
359
 
            gobject.source_remove(self._update_timer_callback_tag)
360
 
            self._update_timer_callback_tag = None
361
 
        for match in self.match_objects:
362
 
            match.remove()
363
 
        self.match_objects = ()
 
177
    def delete(self):
364
178
        if self.delete_hook is not None:
365
179
            self.delete_hook(self)
366
 
        return super(MandosClientWidget, self).delete(*args, **kwargs)
367
180
    
368
 
    def render(self, maxcolrow, focus=False):
 
181
    def render(self, (maxcol,), focus=False):
369
182
        """Render differently if we have focus.
370
183
        This overrides the method from urwid.FlowWidget"""
371
 
        return self.current_widget(focus).render(maxcolrow,
 
184
        return self.current_widget(focus).render((maxcol,),
372
185
                                                 focus=focus)
373
186
    
374
 
    def keypress(self, maxcolrow, key):
 
187
    def keypress(self, (maxcol,), key):
375
188
        """Handle keys.
376
189
        This overrides the method from urwid.FlowWidget"""
377
 
        if key == "+":
378
 
            self.proxy.Enable(dbus_interface = client_interface,
379
 
                              ignore_reply=True)
380
 
        elif key == "-":
381
 
            self.proxy.Disable(dbus_interface = client_interface,
382
 
                               ignore_reply=True)
383
 
        elif key == "a":
384
 
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
385
 
                               dbus_interface = client_interface,
386
 
                               ignore_reply=True)
387
 
        elif key == "d":
388
 
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
389
 
                                  dbus_interface = client_interface,
390
 
                               ignore_reply=True)
391
 
        elif key == "R" or key == "_" or key == "ctrl k":
 
190
        if key == u"e" or key == u"+":
 
191
            self.proxy.Enable()
 
192
        elif key == u"d" or key == u"-":
 
193
            self.proxy.Disable()
 
194
        elif key == u"r" or key == u"_":
392
195
            self.server_proxy_object.RemoveClient(self.proxy
393
 
                                                  .object_path,
394
 
                                                  ignore_reply=True)
395
 
        elif key == "s":
396
 
            self.proxy.StartChecker(dbus_interface = client_interface,
397
 
                                    ignore_reply=True)
398
 
        elif key == "S":
399
 
            self.proxy.StopChecker(dbus_interface = client_interface,
400
 
                                   ignore_reply=True)
401
 
        elif key == "C":
402
 
            self.proxy.CheckedOK(dbus_interface = client_interface,
403
 
                                 ignore_reply=True)
 
196
                                                  .object_path)
 
197
        elif key == u"s":
 
198
            self.proxy.StartChecker()
 
199
        elif key == u"c":
 
200
            self.proxy.StopChecker()
 
201
        elif key == u"S":
 
202
            self.proxy.CheckedOK()
404
203
        # xxx
405
 
#         elif key == "p" or key == "=":
 
204
#         elif key == u"p" or key == "=":
406
205
#             self.proxy.pause()
407
 
#         elif key == "u" or key == ":":
 
206
#         elif key == u"u" or key == ":":
408
207
#             self.proxy.unpause()
409
 
#         elif key == "RET":
 
208
#         elif key == u"RET":
410
209
#             self.open()
411
210
        else:
412
211
            return key
423
222
            self.update()
424
223
 
425
224
 
426
 
class ConstrainedListBox(urwid.ListBox):
427
 
    """Like a normal urwid.ListBox, but will consume all "up" or
428
 
    "down" key presses, thus not allowing any containing widgets to
429
 
    use them as an excuse to shift focus away from this widget.
430
 
    """
431
 
    def keypress(self, maxcolrow, key):
432
 
        ret = super(ConstrainedListBox, self).keypress(maxcolrow, key)
433
 
        if ret in ("up", "down"):
434
 
            return
435
 
        return ret
436
 
 
437
 
 
438
225
class UserInterface(object):
439
226
    """This is the entire user interface - the whole screen
440
227
    with boxes, lists of client widgets, etc.
441
228
    """
442
 
    def __init__(self, max_log_length=1000):
443
 
        DBusGMainLoop(set_as_default=True)
 
229
    def __init__(self):
 
230
        DBusGMainLoop(set_as_default=True )
444
231
        
445
232
        self.screen = urwid.curses_display.Screen()
446
233
        
447
234
        self.screen.register_palette((
448
 
                ("normal",
449
 
                 "default", "default", None),
450
 
                ("bold",
451
 
                 "default", "default", "bold"),
452
 
                ("underline-blink",
453
 
                 "default", "default", "underline"),
454
 
                ("standout",
455
 
                 "default", "default", "standout"),
456
 
                ("bold-underline-blink",
457
 
                 "default", "default", ("bold", "underline")),
458
 
                ("bold-standout",
459
 
                 "default", "default", ("bold", "standout")),
460
 
                ("underline-blink-standout",
461
 
                 "default", "default", ("underline", "standout")),
462
 
                ("bold-underline-blink-standout",
463
 
                 "default", "default", ("bold", "underline",
464
 
                                          "standout")),
 
235
                (u"normal",
 
236
                 u"default", u"default", None),
 
237
                (u"bold",
 
238
                 u"default", u"default", u"bold"),
 
239
                (u"underline-blink",
 
240
                 u"default", u"default", u"underline"),
 
241
                (u"standout",
 
242
                 u"default", u"default", u"standout"),
 
243
                (u"bold-underline-blink",
 
244
                 u"default", u"default", (u"bold", u"underline")),
 
245
                (u"bold-standout",
 
246
                 u"default", u"default", (u"bold", u"standout")),
 
247
                (u"underline-blink-standout",
 
248
                 u"default", u"default", (u"underline", u"standout")),
 
249
                (u"bold-underline-blink-standout",
 
250
                 u"default", u"default", (u"bold", u"underline",
 
251
                                          u"standout")),
465
252
                ))
466
253
        
467
 
        if urwid.supports_unicode():
468
 
            self.divider = "─" # \u2500
469
 
            #self.divider = "━" # \u2501
470
 
        else:
471
 
            #self.divider = "-" # \u002d
472
 
            self.divider = "_" # \u005f
473
 
        
474
254
        self.screen.start()
475
255
        
476
256
        self.size = self.screen.get_cols_rows()
477
257
        
478
258
        self.clients = urwid.SimpleListWalker([])
479
259
        self.clients_dict = {}
480
 
        
481
 
        # We will add Text widgets to this list
482
 
        self.log = []
483
 
        self.max_log_length = max_log_length
484
 
        
485
 
        # We keep a reference to the log widget so we can remove it
486
 
        # from the ListWalker without it getting destroyed
487
 
        self.logbox = ConstrainedListBox(self.log)
488
 
        
489
 
        # This keeps track of whether self.uilist currently has
490
 
        # self.logbox in it or not
491
 
        self.log_visible = True
492
 
        self.log_wrap = "any"
493
 
        
494
 
        self.rebuild()
495
 
        self.log_message_raw(("bold",
496
 
                              "Mandos Monitor version " + version))
497
 
        self.log_message_raw(("bold",
498
 
                              "q: Quit  ?: Help"))
 
260
        self.topwidget = urwid.LineBox(urwid.ListBox(self.clients))
 
261
        #self.topwidget = urwid.ListBox(clients)
499
262
        
500
263
        self.busname = domain + '.Mandos'
501
264
        self.main_loop = gobject.MainLoop()
502
 
    
503
 
    def client_not_found(self, fingerprint, address):
504
 
        self.log_message(("Client with address %s and fingerprint %s"
505
 
                          " could not be found" % (address,
506
 
                                                    fingerprint)))
507
 
    
508
 
    def rebuild(self):
509
 
        """This rebuilds the User Interface.
510
 
        Call this when the widget layout needs to change"""
511
 
        self.uilist = []
512
 
        #self.uilist.append(urwid.ListBox(self.clients))
513
 
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
514
 
                                                          clients),
515
 
                                       #header=urwid.Divider(),
516
 
                                       header=None,
517
 
                                       footer=
518
 
                                       urwid.Divider(div_char=
519
 
                                                     self.divider)))
520
 
        if self.log_visible:
521
 
            self.uilist.append(self.logbox)
522
 
        self.topwidget = urwid.Pile(self.uilist)
523
 
    
524
 
    def log_message(self, message):
525
 
        timestamp = datetime.datetime.now().isoformat()
526
 
        self.log_message_raw(timestamp + ": " + message)
527
 
    
528
 
    def log_message_raw(self, markup):
529
 
        """Add a log message to the log buffer."""
530
 
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
531
 
        if (self.max_log_length
532
 
            and len(self.log) > self.max_log_length):
533
 
            del self.log[0:len(self.log)-self.max_log_length-1]
534
 
        self.logbox.set_focus(len(self.logbox.body.contents),
535
 
                              coming_from="above")
536
 
        self.refresh()
537
 
    
538
 
    def toggle_log_display(self):
539
 
        """Toggle visibility of the log buffer."""
540
 
        self.log_visible = not self.log_visible
541
 
        self.rebuild()
542
 
        #self.log_message("Log visibility changed to: "
543
 
        #                 + unicode(self.log_visible))
544
 
    
545
 
    def change_log_display(self):
546
 
        """Change type of log display.
547
 
        Currently, this toggles wrapping of text lines."""
548
 
        if self.log_wrap == "clip":
549
 
            self.log_wrap = "any"
550
 
        else:
551
 
            self.log_wrap = "clip"
552
 
        for textwidget in self.log:
553
 
            textwidget.set_wrap_mode(self.log_wrap)
554
 
        #self.log_message("Wrap mode: " + self.log_wrap)
 
265
        self.bus = dbus.SystemBus()
 
266
        mandos_dbus_objc = self.bus.get_object(
 
267
            self.busname, u"/", follow_name_owner_changes=True)
 
268
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
 
269
                                          dbus_interface
 
270
                                          = server_interface)
 
271
        try:
 
272
            mandos_clients = (self.mandos_serv
 
273
                              .GetAllClientsWithProperties())
 
274
        except dbus.exceptions.DBusException:
 
275
            mandos_clients = dbus.Dictionary()
 
276
        
 
277
        (self.mandos_serv
 
278
         .connect_to_signal("ClientRemoved",
 
279
                            self.find_and_remove_client,
 
280
                            dbus_interface=server_interface,
 
281
                            byte_arrays=True))
 
282
        (self.mandos_serv
 
283
         .connect_to_signal("ClientAdded",
 
284
                            self.add_new_client,
 
285
                            dbus_interface=server_interface,
 
286
                            byte_arrays=True))
 
287
        for path, client in (mandos_clients.iteritems()):
 
288
            client_proxy_object = self.bus.get_object(self.busname,
 
289
                                                      path)
 
290
            self.add_client(MandosClientWidget(server_proxy_object
 
291
                                               =self.mandos_serv,
 
292
                                               proxy_object
 
293
                                               =client_proxy_object,
 
294
                                               properties=client,
 
295
                                               update_hook
 
296
                                               =self.refresh,
 
297
                                               delete_hook
 
298
                                               =self.remove_client),
 
299
                            path=path)
555
300
    
556
301
    def find_and_remove_client(self, path, name):
557
 
        """Find a client by its object path and remove it.
 
302
        """Find an client from its object path and remove it.
558
303
        
559
304
        This is connected to the ClientRemoved signal from the
560
305
        Mandos server object."""
562
307
            client = self.clients_dict[path]
563
308
        except KeyError:
564
309
            # not found?
565
 
            self.log_message("Unknown client %r (%r) removed", name,
566
 
                             path)
567
310
            return
568
 
        client.delete()
 
311
        self.remove_client(client, path)
569
312
    
570
 
    def add_new_client(self, path):
 
313
    def add_new_client(self, path, properties):
571
314
        client_proxy_object = self.bus.get_object(self.busname, path)
572
315
        self.add_client(MandosClientWidget(server_proxy_object
573
316
                                           =self.mandos_serv,
574
317
                                           proxy_object
575
318
                                           =client_proxy_object,
 
319
                                           properties=properties,
576
320
                                           update_hook
577
321
                                           =self.refresh,
578
322
                                           delete_hook
579
 
                                           =self.remove_client,
580
 
                                           logger
581
 
                                           =self.log_message),
 
323
                                           =self.remove_client),
582
324
                        path=path)
583
325
    
584
326
    def add_client(self, client, path=None):
586
328
        if path is None:
587
329
            path = client.proxy.object_path
588
330
        self.clients_dict[path] = client
589
 
        self.clients.sort(None, lambda c: c.properties["Name"])
 
331
        self.clients.sort(None, lambda c: c.properties[u"name"])
590
332
        self.refresh()
591
333
    
592
334
    def remove_client(self, client, path=None):
594
336
        if path is None:
595
337
            path = client.proxy.object_path
596
338
        del self.clients_dict[path]
597
 
        if not self.clients_dict:
598
 
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
599
 
            # is completely emptied, we need to recreate it.
600
 
            self.clients = urwid.SimpleListWalker([])
601
 
            self.rebuild()
602
339
        self.refresh()
603
340
    
604
341
    def refresh(self):
608
345
    
609
346
    def run(self):
610
347
        """Start the main loop and exit when it's done."""
611
 
        self.bus = dbus.SystemBus()
612
 
        mandos_dbus_objc = self.bus.get_object(
613
 
            self.busname, "/", follow_name_owner_changes=True)
614
 
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
615
 
                                          dbus_interface
616
 
                                          = server_interface)
617
 
        try:
618
 
            mandos_clients = (self.mandos_serv
619
 
                              .GetAllClientsWithProperties())
620
 
        except dbus.exceptions.DBusException:
621
 
            mandos_clients = dbus.Dictionary()
622
 
        
623
 
        (self.mandos_serv
624
 
         .connect_to_signal("ClientRemoved",
625
 
                            self.find_and_remove_client,
626
 
                            dbus_interface=server_interface,
627
 
                            byte_arrays=True))
628
 
        (self.mandos_serv
629
 
         .connect_to_signal("ClientAdded",
630
 
                            self.add_new_client,
631
 
                            dbus_interface=server_interface,
632
 
                            byte_arrays=True))
633
 
        (self.mandos_serv
634
 
         .connect_to_signal("ClientNotFound",
635
 
                            self.client_not_found,
636
 
                            dbus_interface=server_interface,
637
 
                            byte_arrays=True))
638
 
        for path, client in mandos_clients.iteritems():
639
 
            client_proxy_object = self.bus.get_object(self.busname,
640
 
                                                      path)
641
 
            self.add_client(MandosClientWidget(server_proxy_object
642
 
                                               =self.mandos_serv,
643
 
                                               proxy_object
644
 
                                               =client_proxy_object,
645
 
                                               properties=client,
646
 
                                               update_hook
647
 
                                               =self.refresh,
648
 
                                               delete_hook
649
 
                                               =self.remove_client,
650
 
                                               logger
651
 
                                               =self.log_message),
652
 
                            path=path)
653
 
 
654
348
        self.refresh()
655
349
        self._input_callback_tag = (gobject.io_add_watch
656
350
                                    (sys.stdin.fileno(),
666
360
    
667
361
    def process_input(self, source, condition):
668
362
        keys = self.screen.get_input()
669
 
        translations = { "ctrl n": "down",      # Emacs
670
 
                         "ctrl p": "up",        # Emacs
671
 
                         "ctrl v": "page down", # Emacs
672
 
                         "meta v": "page up",   # Emacs
673
 
                         " ": "page down",      # less
674
 
                         "f": "page down",      # less
675
 
                         "b": "page up",        # less
676
 
                         "j": "down",           # vi
677
 
                         "k": "up",             # vi
 
363
        translations = { u"j": u"down",
 
364
                         u"k": u"up",
678
365
                         }
679
366
        for key in keys:
680
367
            try:
682
369
            except KeyError:    # :-)
683
370
                pass
684
371
            
685
 
            if key == "q" or key == "Q":
 
372
            if key == u"q" or key == u"Q":
686
373
                self.stop()
687
374
                break
688
 
            elif key == "window resize":
 
375
            elif key == u"window resize":
689
376
                self.size = self.screen.get_cols_rows()
690
377
                self.refresh()
691
 
            elif key == "\f":  # Ctrl-L
692
 
                self.refresh()
693
 
            elif key == "l" or key == "D":
694
 
                self.toggle_log_display()
695
 
                self.refresh()
696
 
            elif key == "w" or key == "i":
697
 
                self.change_log_display()
698
 
                self.refresh()
699
 
            elif key == "?" or key == "f1" or key == "esc":
700
 
                if not self.log_visible:
701
 
                    self.log_visible = True
702
 
                    self.rebuild()
703
 
                self.log_message_raw(("bold",
704
 
                                      "  ".
705
 
                                      join(("q: Quit",
706
 
                                            "?: Help",
707
 
                                            "l: Log window toggle",
708
 
                                            "TAB: Switch window",
709
 
                                            "w: Wrap (log)"))))
710
 
                self.log_message_raw(("bold",
711
 
                                      "  "
712
 
                                      .join(("Clients:",
713
 
                                             "+: Enable",
714
 
                                             "-: Disable",
715
 
                                             "R: Remove",
716
 
                                             "s: Start new checker",
717
 
                                             "S: Stop checker",
718
 
                                             "C: Checker OK",
719
 
                                             "a: Approve",
720
 
                                             "d: Deny"))))
721
 
                self.refresh()
722
 
            elif key == "tab":
723
 
                if self.topwidget.get_focus() is self.logbox:
724
 
                    self.topwidget.set_focus(0)
725
 
                else:
726
 
                    self.topwidget.set_focus(self.logbox)
727
 
                self.refresh()
728
 
            #elif (key == "end" or key == "meta >" or key == "G"
729
 
            #      or key == ">"):
730
 
            #    pass            # xxx end-of-buffer
731
 
            #elif (key == "home" or key == "meta <" or key == "g"
732
 
            #      or key == "<"):
733
 
            #    pass            # xxx beginning-of-buffer
734
 
            #elif key == "ctrl e" or key == "$":
735
 
            #    pass            # xxx move-end-of-line
736
 
            #elif key == "ctrl a" or key == "^":
737
 
            #    pass            # xxx move-beginning-of-line
738
 
            #elif key == "ctrl b" or key == "meta (" or key == "h":
739
 
            #    pass            # xxx left
740
 
            #elif key == "ctrl f" or key == "meta )" or key == "l":
741
 
            #    pass            # xxx right
742
 
            #elif key == "a":
743
 
            #    pass            # scroll up log
744
 
            #elif key == "z":
745
 
            #    pass            # scroll down log
 
378
            elif key == " ":
 
379
                self.refresh()
746
380
            elif self.topwidget.selectable():
747
381
                self.topwidget.keypress(self.size, key)
748
382
                self.refresh()
751
385
ui = UserInterface()
752
386
try:
753
387
    ui.run()
754
 
except KeyboardInterrupt:
755
 
    ui.screen.stop()
756
 
except Exception, e:
757
 
    ui.log_message(unicode(e))
 
388
except:
758
389
    ui.screen.stop()
759
390
    raise