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  • Committer: Teddy Hogeborn
  • Date: 2008-08-20 03:22:45 UTC
  • Revision ID: teddy@fukt.bsnet.se-20080820032245-ue341vdvzqdsg68l
* mandos (string_to_delta): Accept a whitespace-separated sequence of
                            intervals and return the sum.  This allows
                            "5m 30s" to be valid.
  (main): Provide an empty default value for the "host" option for
          "clients.conf", making it no longer a required option.

* mandos-clients.conf.xml: Removed <?xml-stylesheet>.
  (DESCRIPTION): Improved text.
  (DEFAULTS): Renamed to "OPTIONS".  Improved text for "timeout" and
              "interval".
  (CLIENTS): Removed; content moved to "OPTIONS".
  (EXPANSION): New section; document %(foo)s and %%(foo)s expansion.
  (FILES): Moved to before "EXAMPLES".
  (BUGS): New section.
  (EXAMPLES): Renamed to "EXAMPLE", as per man-pages(7).  Renamed
              example section "example_client" to "foo".  Changed
              example "host" setting to a more reasonable example host
              name.  Added additional example client "bar".

* mandos-conf.xml: Removed OVERVIEW entity.

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Lines of Context:
mandos-monitor
1
 
#!/usr/bin/python
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
 
 
25
 
from __future__ import (division, absolute_import, print_function,
26
 
                        unicode_literals)
27
 
 
28
 
import sys
29
 
import os
30
 
import signal
31
 
 
32
 
import datetime
33
 
 
34
 
import urwid.curses_display
35
 
import urwid
36
 
 
37
 
from dbus.mainloop.glib import DBusGMainLoop
38
 
import gobject
39
 
 
40
 
import dbus
41
 
 
42
 
import UserList
43
 
 
44
 
import locale
45
 
 
46
 
locale.setlocale(locale.LC_ALL, '')
47
 
 
48
 
import logging
49
 
logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
50
 
 
51
 
# Some useful constants
52
 
domain = 'se.recompile'
53
 
server_interface = domain + '.Mandos'
54
 
client_interface = domain + '.Mandos.Client'
55
 
version = "1.5.3"
56
 
 
57
 
# Always run in monochrome mode
58
 
urwid.curses_display.curses.has_colors = lambda : False
59
 
 
60
 
# Urwid doesn't support blinking, but we want it.  Since we have no
61
 
# use for underline on its own, we make underline also always blink.
62
 
urwid.curses_display.curses.A_UNDERLINE |= (
63
 
    urwid.curses_display.curses.A_BLINK)
64
 
 
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
 
class MandosClientPropertyCache(object):
82
 
    """This wraps a Mandos Client D-Bus proxy object, caches the
83
 
    properties and calls a hook function when any of them are
84
 
    changed.
85
 
    """
86
 
    def __init__(self, proxy_object=None, *args, **kwargs):
87
 
        self.proxy = proxy_object # Mandos Client proxy object
88
 
        
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))
95
 
        
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)
103
 
    
104
 
    def property_changed(self, property=None, value=None):
105
 
        """This is called whenever we get a PropertyChanged signal
106
 
        It updates the changed property in the "properties" dict.
107
 
        """
108
 
        # 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)
115
 
 
116
 
 
117
 
class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
118
 
    """A Mandos Client which is visible on the screen.
119
 
    """
120
 
    
121
 
    def __init__(self, server_proxy_object=None, update_hook=None,
122
 
                 delete_hook=None, logger=None, *args, **kwargs):
123
 
        # Called on update
124
 
        self.update_hook = update_hook
125
 
        # Called on delete
126
 
        self.delete_hook = delete_hook
127
 
        # Mandos Server proxy object
128
 
        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
 
        
135
 
        # The widget shown normally
136
 
        self._text_widget = urwid.Text("")
137
 
        # The widget shown when we have focus
138
 
        self._focus_text_widget = urwid.Text("")
139
 
        super(MandosClientWidget, self).__init__(
140
 
            update_hook=update_hook, delete_hook=delete_hook,
141
 
            *args, **kwargs)
142
 
        self.update()
143
 
        self.opened = False
144
 
        
145
 
        last_checked_ok = isoformat_to_datetime(self.properties
146
 
                                                ["LastCheckedOK"])
147
 
        
148
 
        if self.properties ["LastCheckerStatus"] != 0:
149
 
            self.using_timer(True)
150
 
        
151
 
        if self.need_approval:
152
 
            self.using_timer(True)
153
 
        
154
 
        self.match_objects = (
155
 
            self.proxy.connect_to_signal("CheckerCompleted",
156
 
                                         self.checker_completed,
157
 
                                         client_interface,
158
 
                                         byte_arrays=True),
159
 
            self.proxy.connect_to_signal("CheckerStarted",
160
 
                                         self.checker_started,
161
 
                                         client_interface,
162
 
                                         byte_arrays=True),
163
 
            self.proxy.connect_to_signal("GotSecret",
164
 
                                         self.got_secret,
165
 
                                         client_interface,
166
 
                                         byte_arrays=True),
167
 
            self.proxy.connect_to_signal("NeedApproval",
168
 
                                         self.need_approval,
169
 
                                         client_interface,
170
 
                                         byte_arrays=True),
171
 
            self.proxy.connect_to_signal("Rejected",
172
 
                                         self.rejected,
173
 
                                         client_interface,
174
 
                                         byte_arrays=True))
175
 
        #self.logger('Created client {0}'
176
 
        #            .format(self.properties["Name"]))
177
 
    
178
 
    def property_changed(self, property=None, value=None):
179
 
        super(self, MandosClientWidget).property_changed(property,
180
 
                                                         value)
181
 
        if property == "ApprovalPending":
182
 
            using_timer(bool(value))
183
 
        if property == "LastCheckerStatus":
184
 
            using_timer(value != 0)
185
 
            #self.logger('Checker for client {0} (command "{1}") was '
186
 
            #            ' successful'.format(self.properties["Name"],
187
 
            #                                 command))
188
 
    
189
 
    def using_timer(self, flag):
190
 
        """Call this method with True or False when timer should be
191
 
        activated or deactivated.
192
 
        """
193
 
        old = self._update_timer_callback_lock
194
 
        if flag:
195
 
            self._update_timer_callback_lock += 1
196
 
        else:
197
 
            self._update_timer_callback_lock -= 1
198
 
        if old == 0 and self._update_timer_callback_lock:
199
 
            # Will update the shown timer value every second
200
 
            self._update_timer_callback_tag = (gobject.timeout_add
201
 
                                               (1000,
202
 
                                                self.update_timer))
203
 
        elif old and self._update_timer_callback_lock == 0:
204
 
            gobject.source_remove(self._update_timer_callback_tag)
205
 
            self._update_timer_callback_tag = None
206
 
    
207
 
    def checker_completed(self, exitstatus, condition, command):
208
 
        if exitstatus == 0:
209
 
            self.update()
210
 
            return
211
 
        # Checker failed
212
 
        if os.WIFEXITED(condition):
213
 
            self.logger('Checker for client {0} (command "{1}")'
214
 
                        ' failed with exit code {2}'
215
 
                        .format(self.properties["Name"], command,
216
 
                                os.WEXITSTATUS(condition)))
217
 
        elif os.WIFSIGNALED(condition):
218
 
            self.logger('Checker for client {0} (command "{1}") was'
219
 
                        ' killed by signal {2}'
220
 
                        .format(self.properties["Name"], command,
221
 
                                os.WTERMSIG(condition)))
222
 
        elif os.WCOREDUMP(condition):
223
 
            self.logger('Checker for client {0} (command "{1}")'
224
 
                        ' dumped core'
225
 
                        .format(self.properties["Name"], command))
226
 
        else:
227
 
            self.logger('Checker for client {0} completed'
228
 
                        ' mysteriously'
229
 
                        .format(self.properties["Name"]))
230
 
        self.update()
231
 
    
232
 
    def checker_started(self, command):
233
 
        """Server signals that a checker started. This could be useful
234
 
           to log in the future. """
235
 
        #self.logger('Client {0} started checker "{1}"'
236
 
        #            .format(self.properties["Name"],
237
 
        #                    unicode(command)))
238
 
        pass
239
 
    
240
 
    def got_secret(self):
241
 
        self.logger('Client {0} received its secret'
242
 
                    .format(self.properties["Name"]))
243
 
    
244
 
    def need_approval(self, timeout, default):
245
 
        if not default:
246
 
            message = 'Client {0} needs approval within {1} seconds'
247
 
        else:
248
 
            message = 'Client {0} will get its secret in {1} seconds'
249
 
        self.logger(message.format(self.properties["Name"],
250
 
                                   timeout/1000))
251
 
        self.using_timer(True)
252
 
    
253
 
    def rejected(self, reason):
254
 
        self.logger('Client {0} was rejected; reason: {1}'
255
 
                    .format(self.properties["Name"], reason))
256
 
    
257
 
    def selectable(self):
258
 
        """Make this a "selectable" widget.
259
 
        This overrides the method from urwid.FlowWidget."""
260
 
        return True
261
 
    
262
 
    def rows(self, maxcolrow, focus=False):
263
 
        """How many rows this widget will occupy might depend on
264
 
        whether we have focus or not.
265
 
        This overrides the method from urwid.FlowWidget"""
266
 
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
267
 
    
268
 
    def current_widget(self, focus=False):
269
 
        if focus or self.opened:
270
 
            return self._focus_widget
271
 
        return self._widget
272
 
    
273
 
    def update(self):
274
 
        "Called when what is visible on the screen should be updated."
275
 
        # How to add standout mode to a style
276
 
        with_standout = { "normal": "standout",
277
 
                          "bold": "bold-standout",
278
 
                          "underline-blink":
279
 
                              "underline-blink-standout",
280
 
                          "bold-underline-blink":
281
 
                              "bold-underline-blink-standout",
282
 
                          }
283
 
 
284
 
        # Rebuild focus and non-focus widgets using current properties
285
 
 
286
 
        # Base part of a client. Name!
287
 
        base = '{name}: '.format(name=self.properties["Name"])
288
 
        if not self.properties["Enabled"]:
289
 
            message = "DISABLED"
290
 
        elif self.properties["ApprovalPending"]:
291
 
            timeout = datetime.timedelta(milliseconds
292
 
                                         = self.properties
293
 
                                         ["ApprovalDelay"])
294
 
            last_approval_request = isoformat_to_datetime(
295
 
                self.properties["LastApprovalRequest"])
296
 
            if last_approval_request is not None:
297
 
                timer = timeout - (datetime.datetime.utcnow()
298
 
                                   - last_approval_request)
299
 
            else:
300
 
                timer = datetime.timedelta()
301
 
            if self.properties["ApprovedByDefault"]:
302
 
                message = "Approval in {0}. (d)eny?"
303
 
            else:
304
 
                message = "Denial in {0}. (a)pprove?"
305
 
            message = message.format(unicode(timer).rsplit(".", 1)[0])
306
 
        elif self.properties["LastCheckerStatus"] != 0:
307
 
            # When checker has failed, print a timer until client expires
308
 
            expires = self.properties["Expires"]
309
 
            if expires == "":
310
 
                timer = datetime.timedelta(0)
311
 
            else:
312
 
                expires = datetime.datetime.strptime(expires,
313
 
                                                     '%Y-%m-%dT%H:%M:%S.%f')
314
 
                timer = expires - datetime.datetime.utcnow()
315
 
            message = ('A checker has failed! Time until client'
316
 
                       ' gets disabled: {0}'
317
 
                       .format(unicode(timer).rsplit(".", 1)[0]))
318
 
        else:
319
 
            message = "enabled"
320
 
        self._text = "{0}{1}".format(base, message)
321
 
            
322
 
        if not urwid.supports_unicode():
323
 
            self._text = self._text.encode("ascii", "replace")
324
 
        textlist = [("normal", self._text)]
325
 
        self._text_widget.set_text(textlist)
326
 
        self._focus_text_widget.set_text([(with_standout[text[0]],
327
 
                                           text[1])
328
 
                                          if isinstance(text, tuple)
329
 
                                          else text
330
 
                                          for text in textlist])
331
 
        self._widget = self._text_widget
332
 
        self._focus_widget = urwid.AttrWrap(self._focus_text_widget,
333
 
                                            "standout")
334
 
        # Run update hook, if any
335
 
        if self.update_hook is not None:
336
 
            self.update_hook()
337
 
    
338
 
    def update_timer(self):
339
 
        """called by gobject. Will indefinitely loop until
340
 
        gobject.source_remove() on tag is called"""
341
 
        self.update()
342
 
        return True             # Keep calling this
343
 
    
344
 
    def delete(self, *args, **kwargs):
345
 
        if self._update_timer_callback_tag is not None:
346
 
            gobject.source_remove(self._update_timer_callback_tag)
347
 
            self._update_timer_callback_tag = None
348
 
        for match in self.match_objects:
349
 
            match.remove()
350
 
        self.match_objects = ()
351
 
        if self.delete_hook is not None:
352
 
            self.delete_hook(self)
353
 
        return super(MandosClientWidget, self).delete(*args, **kwargs)
354
 
    
355
 
    def render(self, maxcolrow, focus=False):
356
 
        """Render differently if we have focus.
357
 
        This overrides the method from urwid.FlowWidget"""
358
 
        return self.current_widget(focus).render(maxcolrow,
359
 
                                                 focus=focus)
360
 
    
361
 
    def keypress(self, maxcolrow, key):
362
 
        """Handle keys.
363
 
        This overrides the method from urwid.FlowWidget"""
364
 
        if key == "+":
365
 
            self.proxy.Enable(dbus_interface = client_interface,
366
 
                              ignore_reply=True)
367
 
        elif key == "-":
368
 
            self.proxy.Disable(dbus_interface = client_interface,
369
 
                               ignore_reply=True)
370
 
        elif key == "a":
371
 
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
372
 
                               dbus_interface = client_interface,
373
 
                               ignore_reply=True)
374
 
        elif key == "d":
375
 
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
376
 
                                  dbus_interface = client_interface,
377
 
                               ignore_reply=True)
378
 
        elif key == "R" or key == "_" or key == "ctrl k":
379
 
            self.server_proxy_object.RemoveClient(self.proxy
380
 
                                                  .object_path,
381
 
                                                  ignore_reply=True)
382
 
        elif key == "s":
383
 
            self.proxy.StartChecker(dbus_interface = client_interface,
384
 
                                    ignore_reply=True)
385
 
        elif key == "S":
386
 
            self.proxy.StopChecker(dbus_interface = client_interface,
387
 
                                   ignore_reply=True)
388
 
        elif key == "C":
389
 
            self.proxy.CheckedOK(dbus_interface = client_interface,
390
 
                                 ignore_reply=True)
391
 
        # xxx
392
 
#         elif key == "p" or key == "=":
393
 
#             self.proxy.pause()
394
 
#         elif key == "u" or key == ":":
395
 
#             self.proxy.unpause()
396
 
#         elif key == "RET":
397
 
#             self.open()
398
 
        else:
399
 
            return key
400
 
    
401
 
    def property_changed(self, property=None, value=None,
402
 
                         *args, **kwargs):
403
 
        """Call self.update() if old value is not new value.
404
 
        This overrides the method from MandosClientPropertyCache"""
405
 
        property_name = unicode(property)
406
 
        old_value = self.properties.get(property_name)
407
 
        super(MandosClientWidget, self).property_changed(
408
 
            property=property, value=value, *args, **kwargs)
409
 
        if self.properties.get(property_name) != old_value:
410
 
            self.update()
411
 
 
412
 
 
413
 
class ConstrainedListBox(urwid.ListBox):
414
 
    """Like a normal urwid.ListBox, but will consume all "up" or
415
 
    "down" key presses, thus not allowing any containing widgets to
416
 
    use them as an excuse to shift focus away from this widget.
417
 
    """
418
 
    def keypress(self, maxcolrow, key):
419
 
        ret = super(ConstrainedListBox, self).keypress(maxcolrow, key)
420
 
        if ret in ("up", "down"):
421
 
            return
422
 
        return ret
423
 
 
424
 
 
425
 
class UserInterface(object):
426
 
    """This is the entire user interface - the whole screen
427
 
    with boxes, lists of client widgets, etc.
428
 
    """
429
 
    def __init__(self, max_log_length=1000):
430
 
        DBusGMainLoop(set_as_default=True)
431
 
        
432
 
        self.screen = urwid.curses_display.Screen()
433
 
        
434
 
        self.screen.register_palette((
435
 
                ("normal",
436
 
                 "default", "default", None),
437
 
                ("bold",
438
 
                 "default", "default", "bold"),
439
 
                ("underline-blink",
440
 
                 "default", "default", "underline"),
441
 
                ("standout",
442
 
                 "default", "default", "standout"),
443
 
                ("bold-underline-blink",
444
 
                 "default", "default", ("bold", "underline")),
445
 
                ("bold-standout",
446
 
                 "default", "default", ("bold", "standout")),
447
 
                ("underline-blink-standout",
448
 
                 "default", "default", ("underline", "standout")),
449
 
                ("bold-underline-blink-standout",
450
 
                 "default", "default", ("bold", "underline",
451
 
                                          "standout")),
452
 
                ))
453
 
        
454
 
        if urwid.supports_unicode():
455
 
            self.divider = "─" # \u2500
456
 
            #self.divider = "━" # \u2501
457
 
        else:
458
 
            #self.divider = "-" # \u002d
459
 
            self.divider = "_" # \u005f
460
 
        
461
 
        self.screen.start()
462
 
        
463
 
        self.size = self.screen.get_cols_rows()
464
 
        
465
 
        self.clients = urwid.SimpleListWalker([])
466
 
        self.clients_dict = {}
467
 
        
468
 
        # We will add Text widgets to this list
469
 
        self.log = []
470
 
        self.max_log_length = max_log_length
471
 
        
472
 
        # We keep a reference to the log widget so we can remove it
473
 
        # from the ListWalker without it getting destroyed
474
 
        self.logbox = ConstrainedListBox(self.log)
475
 
        
476
 
        # This keeps track of whether self.uilist currently has
477
 
        # self.logbox in it or not
478
 
        self.log_visible = True
479
 
        self.log_wrap = "any"
480
 
        
481
 
        self.rebuild()
482
 
        self.log_message_raw(("bold",
483
 
                              "Mandos Monitor version " + version))
484
 
        self.log_message_raw(("bold",
485
 
                              "q: Quit  ?: Help"))
486
 
        
487
 
        self.busname = domain + '.Mandos'
488
 
        self.main_loop = gobject.MainLoop()
489
 
    
490
 
    def client_not_found(self, fingerprint, address):
491
 
        self.log_message("Client with address {0} and fingerprint"
492
 
                         " {1} could not be found"
493
 
                         .format(address, fingerprint))
494
 
    
495
 
    def rebuild(self):
496
 
        """This rebuilds the User Interface.
497
 
        Call this when the widget layout needs to change"""
498
 
        self.uilist = []
499
 
        #self.uilist.append(urwid.ListBox(self.clients))
500
 
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
501
 
                                                          clients),
502
 
                                       #header=urwid.Divider(),
503
 
                                       header=None,
504
 
                                       footer=
505
 
                                       urwid.Divider(div_char=
506
 
                                                     self.divider)))
507
 
        if self.log_visible:
508
 
            self.uilist.append(self.logbox)
509
 
        self.topwidget = urwid.Pile(self.uilist)
510
 
    
511
 
    def log_message(self, message):
512
 
        timestamp = datetime.datetime.now().isoformat()
513
 
        self.log_message_raw(timestamp + ": " + message)
514
 
    
515
 
    def log_message_raw(self, markup):
516
 
        """Add a log message to the log buffer."""
517
 
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
518
 
        if (self.max_log_length
519
 
            and len(self.log) > self.max_log_length):
520
 
            del self.log[0:len(self.log)-self.max_log_length-1]
521
 
        self.logbox.set_focus(len(self.logbox.body.contents),
522
 
                              coming_from="above")
523
 
        self.refresh()
524
 
    
525
 
    def toggle_log_display(self):
526
 
        """Toggle visibility of the log buffer."""
527
 
        self.log_visible = not self.log_visible
528
 
        self.rebuild()
529
 
        #self.log_message("Log visibility changed to: "
530
 
        #                 + unicode(self.log_visible))
531
 
    
532
 
    def change_log_display(self):
533
 
        """Change type of log display.
534
 
        Currently, this toggles wrapping of text lines."""
535
 
        if self.log_wrap == "clip":
536
 
            self.log_wrap = "any"
537
 
        else:
538
 
            self.log_wrap = "clip"
539
 
        for textwidget in self.log:
540
 
            textwidget.set_wrap_mode(self.log_wrap)
541
 
        #self.log_message("Wrap mode: " + self.log_wrap)
542
 
    
543
 
    def find_and_remove_client(self, path, name):
544
 
        """Find a client by its object path and remove it.
545
 
        
546
 
        This is connected to the ClientRemoved signal from the
547
 
        Mandos server object."""
548
 
        try:
549
 
            client = self.clients_dict[path]
550
 
        except KeyError:
551
 
            # not found?
552
 
            self.log_message("Unknown client {0!r} ({1!r}) removed"
553
 
                             .format(name, path))
554
 
            return
555
 
        client.delete()
556
 
    
557
 
    def add_new_client(self, path):
558
 
        client_proxy_object = self.bus.get_object(self.busname, path)
559
 
        self.add_client(MandosClientWidget(server_proxy_object
560
 
                                           =self.mandos_serv,
561
 
                                           proxy_object
562
 
                                           =client_proxy_object,
563
 
                                           update_hook
564
 
                                           =self.refresh,
565
 
                                           delete_hook
566
 
                                           =self.remove_client,
567
 
                                           logger
568
 
                                           =self.log_message),
569
 
                        path=path)
570
 
    
571
 
    def add_client(self, client, path=None):
572
 
        self.clients.append(client)
573
 
        if path is None:
574
 
            path = client.proxy.object_path
575
 
        self.clients_dict[path] = client
576
 
        self.clients.sort(None, lambda c: c.properties["Name"])
577
 
        self.refresh()
578
 
    
579
 
    def remove_client(self, client, path=None):
580
 
        self.clients.remove(client)
581
 
        if path is None:
582
 
            path = client.proxy.object_path
583
 
        del self.clients_dict[path]
584
 
        if not self.clients_dict:
585
 
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
586
 
            # is completely emptied, we need to recreate it.
587
 
            self.clients = urwid.SimpleListWalker([])
588
 
            self.rebuild()
589
 
        self.refresh()
590
 
    
591
 
    def refresh(self):
592
 
        """Redraw the screen"""
593
 
        canvas = self.topwidget.render(self.size, focus=True)
594
 
        self.screen.draw_screen(self.size, canvas)
595
 
    
596
 
    def run(self):
597
 
        """Start the main loop and exit when it's done."""
598
 
        self.bus = dbus.SystemBus()
599
 
        mandos_dbus_objc = self.bus.get_object(
600
 
            self.busname, "/", follow_name_owner_changes=True)
601
 
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
602
 
                                          dbus_interface
603
 
                                          = server_interface)
604
 
        try:
605
 
            mandos_clients = (self.mandos_serv
606
 
                              .GetAllClientsWithProperties())
607
 
        except dbus.exceptions.DBusException:
608
 
            mandos_clients = dbus.Dictionary()
609
 
        
610
 
        (self.mandos_serv
611
 
         .connect_to_signal("ClientRemoved",
612
 
                            self.find_and_remove_client,
613
 
                            dbus_interface=server_interface,
614
 
                            byte_arrays=True))
615
 
        (self.mandos_serv
616
 
         .connect_to_signal("ClientAdded",
617
 
                            self.add_new_client,
618
 
                            dbus_interface=server_interface,
619
 
                            byte_arrays=True))
620
 
        (self.mandos_serv
621
 
         .connect_to_signal("ClientNotFound",
622
 
                            self.client_not_found,
623
 
                            dbus_interface=server_interface,
624
 
                            byte_arrays=True))
625
 
        for path, client in mandos_clients.iteritems():
626
 
            client_proxy_object = self.bus.get_object(self.busname,
627
 
                                                      path)
628
 
            self.add_client(MandosClientWidget(server_proxy_object
629
 
                                               =self.mandos_serv,
630
 
                                               proxy_object
631
 
                                               =client_proxy_object,
632
 
                                               properties=client,
633
 
                                               update_hook
634
 
                                               =self.refresh,
635
 
                                               delete_hook
636
 
                                               =self.remove_client,
637
 
                                               logger
638
 
                                               =self.log_message),
639
 
                            path=path)
640
 
 
641
 
        self.refresh()
642
 
        self._input_callback_tag = (gobject.io_add_watch
643
 
                                    (sys.stdin.fileno(),
644
 
                                     gobject.IO_IN,
645
 
                                     self.process_input))
646
 
        self.main_loop.run()
647
 
        # Main loop has finished, we should close everything now
648
 
        gobject.source_remove(self._input_callback_tag)
649
 
        self.screen.stop()
650
 
    
651
 
    def stop(self):
652
 
        self.main_loop.quit()
653
 
    
654
 
    def process_input(self, source, condition):
655
 
        keys = self.screen.get_input()
656
 
        translations = { "ctrl n": "down",      # Emacs
657
 
                         "ctrl p": "up",        # Emacs
658
 
                         "ctrl v": "page down", # Emacs
659
 
                         "meta v": "page up",   # Emacs
660
 
                         " ": "page down",      # less
661
 
                         "f": "page down",      # less
662
 
                         "b": "page up",        # less
663
 
                         "j": "down",           # vi
664
 
                         "k": "up",             # vi
665
 
                         }
666
 
        for key in keys:
667
 
            try:
668
 
                key = translations[key]
669
 
            except KeyError:    # :-)
670
 
                pass
671
 
            
672
 
            if key == "q" or key == "Q":
673
 
                self.stop()
674
 
                break
675
 
            elif key == "window resize":
676
 
                self.size = self.screen.get_cols_rows()
677
 
                self.refresh()
678
 
            elif key == "\f":  # Ctrl-L
679
 
                self.refresh()
680
 
            elif key == "l" or key == "D":
681
 
                self.toggle_log_display()
682
 
                self.refresh()
683
 
            elif key == "w" or key == "i":
684
 
                self.change_log_display()
685
 
                self.refresh()
686
 
            elif key == "?" or key == "f1" or key == "esc":
687
 
                if not self.log_visible:
688
 
                    self.log_visible = True
689
 
                    self.rebuild()
690
 
                self.log_message_raw(("bold",
691
 
                                      "  ".
692
 
                                      join(("q: Quit",
693
 
                                            "?: Help",
694
 
                                            "l: Log window toggle",
695
 
                                            "TAB: Switch window",
696
 
                                            "w: Wrap (log)"))))
697
 
                self.log_message_raw(("bold",
698
 
                                      "  "
699
 
                                      .join(("Clients:",
700
 
                                             "+: Enable",
701
 
                                             "-: Disable",
702
 
                                             "R: Remove",
703
 
                                             "s: Start new checker",
704
 
                                             "S: Stop checker",
705
 
                                             "C: Checker OK",
706
 
                                             "a: Approve",
707
 
                                             "d: Deny"))))
708
 
                self.refresh()
709
 
            elif key == "tab":
710
 
                if self.topwidget.get_focus() is self.logbox:
711
 
                    self.topwidget.set_focus(0)
712
 
                else:
713
 
                    self.topwidget.set_focus(self.logbox)
714
 
                self.refresh()
715
 
            #elif (key == "end" or key == "meta >" or key == "G"
716
 
            #      or key == ">"):
717
 
            #    pass            # xxx end-of-buffer
718
 
            #elif (key == "home" or key == "meta <" or key == "g"
719
 
            #      or key == "<"):
720
 
            #    pass            # xxx beginning-of-buffer
721
 
            #elif key == "ctrl e" or key == "$":
722
 
            #    pass            # xxx move-end-of-line
723
 
            #elif key == "ctrl a" or key == "^":
724
 
            #    pass            # xxx move-beginning-of-line
725
 
            #elif key == "ctrl b" or key == "meta (" or key == "h":
726
 
            #    pass            # xxx left
727
 
            #elif key == "ctrl f" or key == "meta )" or key == "l":
728
 
            #    pass            # xxx right
729
 
            #elif key == "a":
730
 
            #    pass            # scroll up log
731
 
            #elif key == "z":
732
 
            #    pass            # scroll down log
733
 
            elif self.topwidget.selectable():
734
 
                self.topwidget.keypress(self.size, key)
735
 
                self.refresh()
736
 
        return True
737
 
 
738
 
ui = UserInterface()
739
 
try:
740
 
    ui.run()
741
 
except KeyboardInterrupt:
742
 
    ui.screen.stop()
743
 
except Exception, e:
744
 
    ui.log_message(unicode(e))
745
 
    ui.screen.stop()
746
 
    raise